Question about 1996 Oldsmobile Cutlass Supreme Coupe

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Small line on top of the motor when I press down on the accelerator pressure forces gas to leak out. I cannot get in with a tool to see if I can tighten the coupling or if it is cracked

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Change line and fitting

Posted on Jul 04, 2010


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85 toyota pickup 22r motor idles fine but stalls out climbing a hill or accelerating. Can continue only by stopping and letting the motor idle and then trying again. The problem is inconsistent except

sounds like it\'s the fuel pump, or a vacuum leak, or it could be the vent line to your gas tank is clogged and not allowing the gas to leave the tank. It can actually build up negative pressure like a vacuum as the gas leaves the tank. There has to be a vent line that only lets air into the tank, it will be a one way valve that may be clogged up. When you are accelerating heavily the gas will be leaving the tank at a faster rate and after a while if the vent is not functioning it will be harder for your fuel pump to suck the gas out of the tank. Keep in mind that it already has the burden of pulling the gas from the bottom of the tank and then pushing it through a 20ft long tube. On top of that it needs to maintain a pressure level that the fuel injectors need to be able to force the gas through them also. It\'s doing a hard job as it is without having to work against any restrictions to the flow or negative pressure that may cause the tank to actually collapse to be able to get any gas out of it. When you let up or stop and let it idol, the pressure build up will decrease and maybe that check valve is stuck but will let a tiny amount of pressure to be relieved very slowly. This would explain the problem, it may have an insect that crawled in there and made a home, leaving a very small amount of room for air to pass through or it may just be stuck closed.

This is just my guess, if it\'s not fuel injected and has a mechanical fuel pump also, it could be in the feul pump itself. I had a high performance fuel pump that had pieces of rubber gasket caught in the line that connected the pump to the carb. It would die out upon acceleration and I would loose every race, finally had my girlfriend watch the glass in line fuel filter to see if the gas was staying flowing or not. I gassed it and she said the gas stopped and there was some black stuff that was coming up into the filter and would go away when I let up. Those were pieces of the fuel pump diaphragms and gaskets that were in the line, problem solved and the only thing I lost after that was my license!

Try loosening up you gas cap and see if it stops, your gas cap may be vented to prevent this also. if you can\'t loosen it then remove it completely, drive it as normal and see if this solves it. Some cars will have warning lights that will show up if the cap is not on but this will not be a permanent thing this is just to see if you need to get a new gas cap or need to replace the check valve. This will be 1 of what may be many steps to take to solve this.

I hope that it\'s this simple, these things can pose headaches that never may be solved.

Jan 02, 2014 | 1985 Toyota Pickup

2 Answers

95 buick riviera supercharged smells like gas from the rear and the car takes awhile to start when cold....please help

there maybe a leak in the fuel line and it is not getting enough pressure any gas (fuel) smells at rear should be check as soon as found. check fuel lines on top of tank, they the first point to split. also at any joint that is metal in the fule line.

Oct 11, 2013 | 1997 Buick Riviera

2 Answers

Why it has trouble starting the first time every day, but works fine later, and runs good

If it only gives trouble after standing unused for several hours, I would suspect the gas lines, possibly. After sitting for several hours, if your gas lines are already gunked up, then it's difficult to get the fuel to the engine after sitting for several hours. Once you use it, and warm it up, then it's not as difficult getting fuel through gunked up lines. Just a possibility.

Jun 04, 2013 | 1995 Jeep Grand Cherokee

1 Answer

Wont go into gear

Did any fluid come out? It has to have fluid reach the slave cylinder, and when bleed valve is open and clutch is pressed, fluid should squirt out. Open the valve and pump the clutch until fluid is forced down into the slave cylinder. Keep topping up the clutch master cylinder so it won't run dry.
Post back if still having problems. There is a tool at auto parts stores for pressure bleeding brake lines and clutch lines. It forces fluid into the lines by pressure. If nothing works, your clutch master cylinder may have failed. Take the line off at the slave cylinder and see if the master cylinder is working to push fluid through the line.

May 10, 2012 | Hyundai Motor 1997 Tiburon

2 Answers

240 Volvo - Acceleration Problems

One fuel pump may have died. Either the in-tank pump or the in-line pump which is below the left rear passenger floorboard. I would test power to in-line pump first. You can start engine and have a friend lay down by the in-line pump and listen for it to churn/buzz/hum.

Apr 26, 2012 | 1991 Volvo 240

1 Answer

Have a gas smell near top of motor-is there a gas line from fuel pump to fuel injection

Yes there is a line from the pumt to the injectors....and also a return line. It is unlikey to leak a small amount from this, as any leaks there are under pressure and spill massive amounts...Look around for smaller leaks, often in fuel vapor recovery system...Be sure gas cap is correct one and installed correctly.

Oct 20, 2010 | 1990 Toyota 4Runner

1 Answer

Leaking gas on top of motor not sure what the part is

check for leak at fuel fittings on injector rail, faulty fuel pressure regulator (small round canister type valve on end of fuel rail, has vacuum line attached to top) leaking o-rings on injectors.

Dec 26, 2009 | 2001 Oldsmobile Alero

2 Answers

Trying to change fuel filter on a 2008 escape. took off 2 metal clips and bracket holding filter. filter turns around gas line, but how do you get it off gas line? I don't want to force it

They make cheap fuel line removal tools and can pick them up at any auto parts store. They can explain how to use them. Its really easy. Find the tool that's closest to your fuel line size, they also sell a universal pack for around $5. Open the tool mouth so it goes over your fuel line with male part of the tool facing the female slide it in. Then your line can be pulled out. Careful the line are under pressure with gas. It will only leak for a few seconds. Then replace your fuel filter and the lines just snap back on, no tools necessary. Check for leaks and your done. Good Luck!

Sep 17, 2009 | 2008 Ford Escape

2 Answers

Strong fuel smell

You more than probably have a gas leak somewhere in the fuel system. If you can smell gasoline, it is leaking somewhere. The lines run along the frame to the engine. The leak might be hard to see or hidden (on top of the fuel tank).

The leak is robbing fuel pressure from the engine, causing it to idle rough, so is probably on the pressure side of the system.

(Most fuel systems, except for "returnless" systems with Pulse width modulated fuel pumps (not very common), have a pressure line and a return line to the tank.

Aug 19, 2008 | 1994 Toyota Pickup

1 Answer

Ford LTDwith 400m cuts out?

fuel filter or fuel pump problem or it could be the automatic choke is closed and choking motor make sure choke is plugged in on side of carb start car let it warm up with air breather off watch and see if choke opens up .also you can look down into carb when motoe running crack open throttle and see if it sprays gas into intake if it doesnt could be filter or pump. to check fuel pump remove fuel line from carb insert line into small can or bottle so fuel doesnt run ontop of motor and have someone just bump over starter and see if it pushes fuel out line with a descent amount of pressure check fuel filter.and if all that checks out try looking for vaccum line off to check get a can of either and squirt lightly around vaccum lines and listen for car to idle up if it does bad vaccum line. and also check distributer. but it sounds like it is getting to much gas so i would check choke first..... hope that helps .. and by the way you have a 351 modified 400 wich is 351 m 400.

May 18, 2008 | 1992 Ford LTD

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