S10 gas tank swap

The S-10 gas tank is mounted to the frame behind the cab, perfect for a filler neck to come up through the wood in the bed. This eliminates the gas tank in the cab problem. To do …

Take advantage of the Inflation Reduction Act's rebate to swap your gas range for a new electric model. Politicians and social media can’t get enough of the gas versus electric sto...Re: 91 s10 Blazer fuel tank swap. by Mustang Shooter » Fri Dec 19, 2014 5:00 pm. Yes, you would use the 91 sending unit assembly with the new pump installed in place of the …May 12, 2018 · The S-10 gas tank is mounted to the frame behind the cab, perfect for a filler neck to come up through the wood in the bed. This eliminates the gas tank in the cab problem. To do the swap it requires some good old American ingenuity, but not tons of car knowledge. It is discouraging for the truck to be in many pieces. In this episode I cover my plans and idea of using the stock S10 fuel tank along with a Holley 110 gph Mechanical fuel pump. I will discuss the parts I have ...Aug 28, 2009 · There is always the idea of using a 2 tank setup, possibly the stock s10 tank and a blazer tank -1994 Toyota Bagged, Suicides, 3.8 T5 Swap in the Works -2006 Silverado 5/8 Drop on KMC 20s No one wants to pay too much for gas, and it’s frustrating to grab a tankful and travel up the road just to find lower prices on fuel. Check out this guide to finding the best gas ...2904 posts · Joined 2007. #8 · Jul 26, 2021. The later models had a plastic tank. It might have been 2003 only. Try checking the AutoZone repair manuals for a 2003 S10. They often have EVAP schematics. If you can't find it there you'll have to find a 2003 S10 Factory Service Manual.

HowStuffWorks heads to Tank Town USA to, you guessed it, see what it's like to drive a decommissioned military tank. Tank Town USA is just one of a few places in the country where ...May 28, 2012 · Re: What fuel tank to use with s-10 swap I had an idea and wanted to see what you all think, what about if I use the factory tank, and make a circle plate where the sending unit goes and put my intake and return in that plate so if I ever wanted to go back to efi or anything i can just put and sending unit in it and call it good. 599 posts · Joined 2009. #2 · Mar 5, 2011. theres two different size tanks. a 13.2 gallon tank and a 20 gallon tank. Im not sure exaxtly which came with which but Im gonna take a shot and say it came with the 20 gallon..especially since your dime is extended cab...my 2.8 extended cab has a 20 gallon tank. 1991 S10 2.8L Ext Cab 2WD.Re: 91 s10 Blazer fuel tank swap. by Mustang Shooter » Fri Dec 19, 2014 5:00 pm. Yes, you would use the 91 sending unit assembly with the new pump installed in place of the …Find 1979 CHEVROLET C10 Fuel Tanks and get Free Shipping on Orders Over $109 at Summit Racing! Free Mount & Balance for Many Wheel & Tire Packages - Contact us for Details! ... Holley Sniper EFI Conversion Fuel Tanks 19-155 Fuel Tanks, Sniper, 20 Gallon, Steel, Silver, Fuel Pump, 13.5V, 67 gph, 1/4 in. Female Thread, Sending Unit, 0 …

Messages: 90. Location: Black mtn, NC. I have a few questions on putting my body on the s-10 frame. 1) when I put the body on the frame with blocks of 4x4 ( the gas tank in the rails of the s-10 on the drivers side hits the back of the cab) Do I trim the body so it fits lower? 2) the bed sits on the frame at the tail gate end (which is as low ...Truck Model. 89 Suburban R1500, 79 C10. Engine Size. 350, 502. Baffled tank, 1987 1 year only c10 tank (throttle body injected), as well as 1 year only 87' sending unit, and whatever choice of pump you fancy. I have a acdelco ep381 feeding my holley efi, which produces 60 psi, the same pressure the vortec requires. That is what i did on my …May 18, 2013 · The '01+ S10 and Blazer uses a much smaller fuel filler hose, which would be much easier to route. I got this off a 4-door to have plenty of rubber hose, clamps, straights, 90º bends, and a spare fill spout: I got a new tank for a '97 Blazer because it's metal and had a larger tank neck, which better suited my planned mods. A damaged Chevy S-10 Blazer fuel tank is unable to be salvaged, due to the risk of fuel contamination, fire or leakage. These components are crucial for ensuring your fuel remains vented, safe and clean. High-quality S-10 Blazer replacement fuel tanks from AutoZone are developed from corrosion-resistant parts and leak-tested to guarantee safe ...Also,the truck has become harder to start when it is cold. The truck is a 2003 Chevy S10, 2.2L with the vin H motor. It has 60k miles on it. After looking under the truck, I noticed gas leaking from the gas tank and it appears to be coming from above the tank. Currently, the gas tank has roughly 1/4 tank of gas in it, if that helps troubleshooting.

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S10 / S15 Gas Tank Swap. Jump to Latest Follow ... If you have a blazer tank swap, post the pictures or any other gas tank swap post pictures Who has info on filler behind the tail …If your home uses a septic tank to dispose of waste water, it’s important to know how to keep it in proper working order. Here are the basics you need to know to maintain the septi...Engine Size. 632. 4WDKC said: Buy a tank for an 87 its the first year for the TBI in half ton and it is a square body, other options would be pulling a tank from an 87-91 crewcab truck as they are still squarebodied and fuel injected.It would drop rather fast to 1/4 tank when driven, then stay there for many miles. Then it would slowly go to 1/16 when there was 3 to 3.5 gallons left. Other clues were lower than normal oil pressure reading and pegged out temp gauge. The fix was a new ignition switch ~$10 from NAPA auto parts.The Gen-III LS swap is the hot ticket to add big power and reliability to your classic. But that late model power is going to require a dedicated LS swap fuel pump. The video below highlights the Speedway Motors electric fuel pump conversion that we chose as an EFI swap fuel pump for the 5.3 LS in our project ’68 C10.

12K views 3 years ago. I finally finished the filler neck and re-did a little fab work on the Blazer tank in my 1993 S10. Also mated a Walbro 255 fuel pump to a stock 1993 Blazer …I made a couple brackets to mount a 31 gallon 87 blazer gas tank.Here is the gas tank I purchased. https://www.1aauto.com/products/i/1AFRK00049?trk_msg=AVTVC...S10 Blazer Frame. S10 4WD (Including Typhoon's and Syclones) LS Conversion Motor Mounts (Frame and Engine side) DD-LS-S4. *Mounts are offset to allow better fitment around the front differential. *Will fit Milodon #31083 S10 4X4 oil pan. Also required is Milodon pick up tube #18921, oil filter relocation #21575, and bolt kit #85002.The blazer tank will fit between the frame in the rear,but the truck tank will not unless you want to do alot of cutting and welding. 98 Chevy S10 rc 04/5.3/4l60e, 243 heads milled .30 ls6 intake,tb p&p/100 shot plate system. BRP Long tubes,H.S.1.7RR,PAC 1218valve springs, 222/228-581/588,Comp cam. chrmolly 7.350pr,Melling hi volume oil pump.What fuel tank to use with s-10 swap I have a 98 std cab long bed frame came with a gas tank but it is damaged, SO do I just get another gas tank of that one, go with the blazer …S10 Swap, Part 11: TIME REQUIREMENTS The time needed to do the conversion will vary substantially from person to person. An experienced mechanic with the proper …Tanks Inc. Blazer tank swap.Nov 27, 2009 · Yeah, for the most part. The regulator will have a fuel inlet, regulated outlet, and a return line to the tank to bleed off excess fuel that was regulated down. I, like jtc, am going to ditch my electric inline and use a mechanical. I have had nothing but issues with my electric pumps. With a mechanical it is a lot easier to trouble shoot. There are many individuals who don't want fuel injection, even though it is generally better than a carb. You don't have to have in tank or special fuel pumps and associated fuel lines, an ECU with all of the wiring, etc. You can find almost all of these parts used on eBay for considerably less money. Edelbrock makes intakes for 4.3s to …With the frame, came the tilt steering column, power brake booster, wiring harness, fuel tank, all pedals, and seat, if you choose to use it, and a rear end out of a 4 wheel drive S-10 for $150.00. I think the mustang 2 front ends that people put in these trucks cost about $1500.00 or so. Quit a difference in cost thus far.May 3, 2018 · With the frame, came the tilt steering column, power brake booster, wiring harness, fuel tank, all pedals, and seat, if you choose to use it, and a rear end out of a 4 wheel drive S-10 for $150.00. I think the mustang 2 front ends that people put in these trucks cost about $1500.00 or so. Quit a difference in cost thus far.

S10 / S15 Gas Tank Swap. Jump to Latest Follow ... If you have a blazer tank swap, post the pictures or any other gas tank swap post pictures Who has info on filler behind the tail …

A dual currency bond is a bond where the interest payments, known as the coupon, are paid in one currency but the money paid up front for the bond, known as the principal, is in an...Check spec'ns. & verify the same on the in-fuel-tank fuel pump: should be same psi /vol. output, else remove tank & swap proper pump--simple unbolt & rebolt. I have an older '86 S-10 Blazer with a late-model Z-28 TPI 5.7 liter--my computer was more involved as well as cooling. But it fits, looks, performs, and overall made a great swap.Jan 4, 2015 · About the only tank relocation is using a 2-door Blazer tank centered between the frame rails, behind the axle. I did this on my truck. As for just relocating the stock tank, all I can say is take some careful measurements. Your best bet is googling s10 blazer tank swap. 94 S10- 5.3 LM7, 4l80e. Basically I removed the old fuel tank, cut out the rear frame crossmember and welded in new braces to support the blazer tank, cut out both upper mounts on the frame and lower shock mounts on the axle, moved rear brake line mount in front of the axle, bought new leaf spring plates which also have shock mounts on them. So seeing that I1948 - 1956 F1, F100 & Larger F-Series Trucks - S-10 Blazer gas tank swap - Has anyone used or considered using a tank from a 85-94 S-10 Blazer? They measure out at 33W x …Apr 15, 2009 · I would just make a pickup and run an external pump. make sure you have a gauge on it to measure how much presure. -98' s10 bagged, shaved and layed, 40 inch ragtop, carbed 355, 20 inch black 100 spokes, kandy brandywine . -09 cobalt silver. daily first new car,staying stock since its nothing cool really. S10 Blazer Frame. S10 4WD (Including Typhoon's and Syclones) LS Conversion Motor Mounts (Frame and Engine side) DD-LS-S4. *Mounts are offset to allow better fitment around the front differential. *Will fit Milodon #31083 S10 4X4 oil pan. Also required is Milodon pick up tube #18921, oil filter relocation #21575, and bolt kit #85002.3891 posts · Joined 2006. #1 · Feb 25, 2009 (Edited by Moderator) This post is a compilation of parts, suggestions, tips, and practices to successfully swap an LS-based engine into an S10 Truck (2WD and Blazer variants) Most swappers generally underestimate the total costs and time for these conversions. Keep the engine bay clean.

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Welcome to Tanks, Inc. For over 30 years we have offered variety of polyethylene, stainless steel, mild steel and alloy coated steel gas tanks for street rods, muscle cars & classic trucks. We also specialize converting your vehicle to fuel injection. If you are ready to make the jump to EFI for your hot rod or pro touring car we probably have ...Head underneath the new gas tank and place the gas tank straps on either side. Mark the location for the holes to be drilled on the frame rail with a marker. Step 10: Drill Holes for Gas Tank on Driver's Side. Use a ⅜” drill bit to drill a hole in the areas you marked in the last step. Step 11: Mount New Gas Tank Driver's SideNov 27, 2009 · Yeah, for the most part. The regulator will have a fuel inlet, regulated outlet, and a return line to the tank to bleed off excess fuel that was regulated down. I, like jtc, am going to ditch my electric inline and use a mechanical. I have had nothing but issues with my electric pumps. With a mechanical it is a lot easier to trouble shoot. In this episode I introduce project F Bomb and talk about what's been done so far and what some of the future plans are for this pickup. I install code 504's...I need a new gas tank for my LSx swap on a 1985 C/10 SWB. I can get this 1990 blazer tank. Is this a direct bolt-in on the pickup chassis? I know the fuel inlet will need to be …Messages: 90. Location: Black mtn, NC. I have a few questions on putting my body on the s-10 frame. 1) when I put the body on the frame with blocks of 4x4 ( the gas tank in the rails of the s-10 on the drivers side hits the back of the cab) Do I trim the body so it fits lower? 2) the bed sits on the frame at the tail gate end (which is as low ...Improving your fuel economy has many benefits including saving you money, here is how to get better gas mileage next time you fill up your tank. * Required Field Your Name: * Your ...Today we continue our "How to LS Swap" series with getting our new gas tank in the car. This is part 1 of 2 for the fuel system in the series. There was a de...It took a little longer to get this done but here it is. Gas tank is in its final resting place. All the fittings I need to run the fuel lines have been orde... ….

QFS 340LPH Direct Drop-In Performance Fuel Pump Assembly w/ Sending Unit for Chevrolet S10 4.3L Extended Cab/ Short Bed 2002-2003 (Or LSx Swap), Replaces Airtex E3563M. FREE 2-DAY SHIPPING, EASY INSTALL from the AUTHORITY on OEM replacement Fuel Pumps. SAVE up to 70% off on parts for your Chevrolet S10 4.3L …Basically I removed the old fuel tank, cut out the rear frame crossmember and welded in new braces to support the blazer tank, cut out both upper mounts on the frame and lower shock mounts on the axle, moved rear brake line mount in front of the axle, bought new leaf spring plates which also have shock mounts on them. So seeing that IFuel System Tech: Fuel Tank Upgrade Swap On An S10 Chassis Swapped 1950 Chevrolet Truck. Oct 10, 2021 Chad Reynolds ENGINE, ENGINES, Hack of the Week, OTHER, TECH, Tech Stories, Videos Comments Off. S10 chassis are incredibly versatile.Cost for the swap 36 gallon tank $150 extended range fuel pump $267 fuel tank swap labor $300 That makes a total of $717, in the event someone else wants to do one. I haven't ventured into Forscan yet, however there's some curious DTE readings going on after the swap. Immediately after the swap, I went to the gas station and filled up the new ... Coated galvanized steel then Powder Coated Silver. 25 Gallon Capacity. Size is: 28-5/8" x 28-1/4" x 10-3/4". For a complete setup simply choose a GPA fuel pump and fuel sending unit. Only $299.00. TM15-UT. Description: Universal Blazer EFI Fuel Tank with Neck & Cap. Quantity: In this case, an LS-swapped and slammed 1986 Chevrolet C10 pickup truck is our muse. The square body’s donor LS engine is from an ’06 GMC Sierra pickup, now controlled by Holley’s Terminator X Max engine management system. We opted for Holley’s Fuel Tank and EFI module combo for 1973-1987 GM C/K trucks. This kit features a 255 …Dec 31, 2007 · Messages: 90. Location: Black mtn, NC. I have a few questions on putting my body on the s-10 frame. 1) when I put the body on the frame with blocks of 4x4 ( the gas tank in the rails of the s-10 on the drivers side hits the back of the cab) Do I trim the body so it fits lower? 2) the bed sits on the frame at the tail gate end (which is as low ... Take advantage of the Inflation Reduction Act's rebate to swap your gas range for a new electric model. Politicians and social media can’t get enough of the gas versus electric sto...Aug 20, 2012 · 3999 posts · Joined 2007. #12 · Aug 22, 2012. Indeed and fuel vapors suck. I hate the fact that I can smell fuel around my truck. One of these days when I have some more cash I'll get around to adding evap back to my truck. 97 S10 RCSB 4.8 V8, 4L60E swap. May 3, 2018 · With the frame, came the tilt steering column, power brake booster, wiring harness, fuel tank, all pedals, and seat, if you choose to use it, and a rear end out of a 4 wheel drive S-10 for $150.00. I think the mustang 2 front ends that people put in these trucks cost about $1500.00 or so. Quit a difference in cost thus far. S10 gas tank swap, Hybrid S10 Fuel Pump Assembly - Still working to finish this up, what I've done is removed the old S10 return-style fuel pump from the housing itself, and replaced it with a 99-01 Explorer 5.0L returnless style fuel pump & in-tank regulator. Still have to redo the wiring for the Ford harness to replace the GM one, but it shouldn't be a huge feat., - 36 Gallon tank = $129 - New fuel pump = $ 139 Things I found in my research are below: - 36 gallon tank is the same on all truck configurations except the 122in WB (single cab, short bed) - fuel pump varies, for my 2016 3.5 Ecoboost the part number is FL3Z-9H307-N - it is possible to change the DTE in FOREScan. ( 720-03-01 xxx5 54xx xxxx), Let's check the charts of SWN -- and of surging natural gas future prices....SWN Employees of TheStreet are prohibited from trading individual securities. These recently downgr..., ECSB 2.2L Flex Fuel bored 0.40, 0.20 head shave, 5-Speed, 4.10 gears, Space Blue Metallic, Graphite Int, OBX Header, straight pipe cat delete, Thrush Welded, urethane motor mounts, ZQ8 sway bars, Hurst Short Throw Shifter, ClutchMasters 9lbs flywheel, May 28, 2012 · Re: What fuel tank to use with s-10 swap I had an idea and wanted to see what you all think, what about if I use the factory tank, and make a circle plate where the sending unit goes and put my intake and return in that plate so if I ever wanted to go back to efi or anything i can just put and sending unit in it and call it good. , Select Vehicle. Optimize your Chevy/GMC, Ford, and Dodge truck's performance and safety with gas tank relocation kits from LMC Truck. These kits allow you to move your fuel tank to a more secure location, enhancing vehicle stability and safety. Ideal for custom builds or modifications, find everything you need for a successful gas tank relocation., Fuel System Tech: Fuel Tank Upgrade Swap On An S10 Chassis Swapped 1950 Chevrolet Truck. Oct 10, 2021 Chad Reynolds ENGINE, ENGINES, Hack of the Week, OTHER, TECH, Tech Stories, Videos Comments Off. S10 chassis are incredibly versatile., The question that I was hoping to get answered is that the 1995 bazer tank fits ONLY the 1995 blazer, is it the same way with the Sonoma frame? will the 95 blazer tank be the …, My friends who helped me out!https://www.youtube.com/c/802Garagehttps://www.youtube.com/channel/UCK_YjbeIJHDlsvlznbmIrnQhttps://www.youtube.com/channel/UClp-..., Sep 3, 2023 · Looks like it was nation-wide.) and some did not. The S10 tank will have a vent in addition to the fuel pickup and return that's meant to connect to the FTVEC system. You can cap those vents and use a vented gas cap if you want. Suggest small lengths of high-quality fuel hose with a solid plug in lieu of the aftermarket caps sold for that purpose. , Fuel System. Since most LS swaps occur in older cars without fuel injection, the fuel system will need to be upgraded. While some shops will utilize the factory tank and modify it to work with EFI, West Bend Dyno advises against it because m ost LS swaps require a completely new fuel system. Therefore, primary or secondary in-line fuel …, The Gen-III LS swap is the hot ticket to add big power and reliability to your classic. But that late model power is going to require a dedicated LS swap fuel pump. The video below …, If the float is OK and the float arm seems to be swinging freely through its full range, replace the tank unit. Ground the gas tank terminal post of the tank sending unit using a jumper wire. If the dash gauge now reeds empty, the gas tank unit is defective. If the dash gauge needle fails t move, the dash gauge is defective., 1st gen Blazers/Jimmys had either 13.2 or 20 tanks. I don't know the 2 or 4 door differences. 1 gen s10/Sonomas have either 13 or 20 gallon tanks. Either tank could be in short beds, long beds, regular cabs, ex cabs. ALL 2nd gen trucks have 18.5 gallon tanks., The blazer tank will fit between the frame in the rear,but the truck tank will not unless you want to do alot of cutting and welding. 98 Chevy S10 rc 04/5.3/4l60e, 243 heads milled .30 ls6 intake,tb p&p/100 shot plate system. BRP Long tubes,H.S.1.7RR,PAC 1218valve springs, 222/228-581/588,Comp cam. chrmolly 7.350pr,Melling hi volume oil pump., Gas tank swap. Jump to Latest Follow ... S10 addiction: (7) S10s and one LUV. Save Share. Like. CharliesS10 Discussion starter 30 posts ..., What fuel tank to use with s-10 swap I have a 98 std cab long bed frame came with a gas tank but it is damaged, SO do I just get another gas tank of that one, go with the blazer …, If you have a fleet side, it's probably a clogged vent or a kink in it's hose. If you have a step side, I've heard a lot of people who have problems with the gas nozzle working correctly. Wiring Diagrams and Misc. Repair. …, Find 1979 CHEVROLET C10 Fuel Tanks and get Free Shipping on Orders Over $109 at Summit Racing! Free Mount & Balance for Many Wheel & Tire Packages - Contact us for Details! ... Holley Sniper EFI Conversion Fuel Tanks 19-155 Fuel Tanks, Sniper, 20 Gallon, Steel, Silver, Fuel Pump, 13.5V, 67 gph, 1/4 in. Female Thread, Sending Unit, 0 …, Most guys swap a Blazer tank into the rear. Get the factory reliability and the weight distribution you want. ... RCI makes a nice fuel tank that i used on a street rod about that same size. 17 gallon. only pain is that rci uses an 8 fittings for vent pickup and return. Id also has a stand alone fuel level sender. ... S-10 Forum. 8.8M posts 184 ..., Aug 7, 2013 · Dec 11, 2007. Messages: 3,164. Location: Charlotte,NC. You would do better to stay with your stock frame and do IFS/ open rear swap. there is actually a lot more fab work than many people realize with the s10 swap, though the s10 has become THE chassis swap for numerous hot rods. ol' chebby, Aug 7, 2013. #2. , I decided to bastardize it and make it work. A hybrid approach, so to speak. I decided I was going to use my S10 module top and the LS1 Camaro base. So I got to work on Frankenpump. One thing I want to insert here: I have seen some posts where people cut a hole in the bucket and just make sure they have a 1/2 tank or more of fuel., Feb 15, 2011 · They are two different height pumps, the 20 gallon pump will not fit in the 13.2, trust me. I think I already said you can not swap pumps, but I guess technically you could swap the pump alone, the sender and other assembly will not fit. 1989 Chevrolet Blazer 3.4. 1989 Chevrolet Blazer 4.3 4x4. 1989 Chevrolet Blazer 4.3 Edelbrock equipped. , S10 Blazer Frame. S10 4WD (Including Typhoon's and Syclones) LS Conversion Motor Mounts (Frame and Engine side) DD-LS-S4. *Mounts are offset to allow better fitment around the front differential. *Will fit Milodon #31083 S10 4X4 oil pan. Also required is Milodon pick up tube #18921, oil filter relocation #21575, and bolt kit #85002. , Talking from experience, if you're swapping in a first gen pickup, find a tank from a similar year blazer, as the same with a later model pickup. Ill get into why this caused issues for …, When antifreeze is poured into the gas tank, it can cause damage to the vehicle.The vehicle may not start or it will begin to sputter if it is drivable. If the driver continues to ..., S. stonebreaker. 28 posts · Joined 2005. #2 · Sep 8, 2006. Well, the 94-96 caprice has a rear-mounted tank with a license plate fill tube, although I don't know offhand if it would fit. The caprice/impala is nearly a foot wider than the S-10. I do happen to have both an impala tank and an S-10 sitting around, so I'll try to remember to ..., Installing the hard lines, PTFE flex lines, 6AN adapters, fuel pump and fuel tank into the S10. Yes I welded on the gas tank, no I didn't blow myself up...yet., Hybrid S10 Fuel Pump Assembly - Still working to finish this up, what I've done is removed the old S10 return-style fuel pump from the housing itself, and replaced it with a 99-01 Explorer 5.0L returnless style fuel pump & in-tank regulator. Still have to redo the wiring for the Ford harness to replace the GM one, but it shouldn't be a huge feat., Fuel System Tech: Fuel Tank Upgrade Swap On An S10 Chassis Swapped 1950 Chevrolet Truck. Oct 10, 2021 Chad Reynolds ENGINE, ENGINES, Hack of the Week, OTHER, TECH, Tech Stories, Videos Comments Off. S10 chassis are incredibly versatile., Re: 16 to 20 gallon tank swap? I'd put it on the passenger side. 20 gallons of gas is 120 pounds plus tank and brackets. Call it 150 pounds. Now let's say you weigh 180 pounds, and you usually drive the truck alone. Put the tank on the passenger side and that's 150 pounds on one side, 180 pounds on the other., Aug 13, 2016 · This is how i did mine. For the filler, I used a 45 degree exhaust bend out of the tank, which points over the frame rail, to a rubber hose, to a 90 degree exhaust bend welded to a trimmed factory filler neck. OKAY STOP. Before final welding anything, go to your favorite gas station, and make sure the nozzle fits. , Sep 3, 2023 · Looks like it was nation-wide.) and some did not. The S10 tank will have a vent in addition to the fuel pickup and return that's meant to connect to the FTVEC system. You can cap those vents and use a vented gas cap if you want. Suggest small lengths of high-quality fuel hose with a solid plug in lieu of the aftermarket caps sold for that purpose.