I don't know if I'm barking up the wrong tree here but here goes: 4ac engine, my engine will sputter and cough and stall, when look down into the carb the (when the problem is at its worst) it will be just vapour coming out. It usually goes away on its own and the car will run fine. I replaced the air filter and that helped a lot, but problem is still persistent and extremely frustrating.
What I've thought of so far (but haven't done yet):
1. Fuel pump
2. Dirty fuel tank (car sat for a long time before I bought it)
3. Something wrong in the carburetor itself.
Any ideas guys? I'm beginning to think the only thing left to do is drop the fuel tank and clean it out, I'm just dreading the thought of doing that because if I break something in the process parts are scarce. Thanks.
4ac. Intermittent fuel issue
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fastginger
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yellowsnow4free
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Re: 4ac. Intermittent fuel issue
If this is on an AE86 you should be able to take a peek into the gas tank without dropping it.
You can look into the tank by removing the fuel level sending unit:
http://www.aeu86.org/forum/showthread.php?pid=151308
Peel back the carpet in the trunk and you should see this:
It's towards the back of the car closest to the passenger side.
Once you remove that, carefully look inside with a flashlight. My car was sitting for a while before I bought it, and surprisingly the inside of the gas tank was super clean. However, they might've drained it of gas before it sat, who knows.
I'd also try removing the hose going from the fuel filter to the carb while the car is running. The fuel filter is mounted on the firewall, below the heater valve.
If everything looks good coming out of that hose, it might be time to rebuild or buy another carb. I'd either rebuild the carb yourself using a kit ($30 or so I think) or buy a Weber 32/36 DGEV. Rebuilt OEM carbs cost a lot, probably close to that of a Weber anyway.
You can look into the tank by removing the fuel level sending unit:
http://www.aeu86.org/forum/showthread.php?pid=151308
Peel back the carpet in the trunk and you should see this:
It's towards the back of the car closest to the passenger side.
Once you remove that, carefully look inside with a flashlight. My car was sitting for a while before I bought it, and surprisingly the inside of the gas tank was super clean. However, they might've drained it of gas before it sat, who knows.
I'd also try removing the hose going from the fuel filter to the carb while the car is running. The fuel filter is mounted on the firewall, below the heater valve.
If everything looks good coming out of that hose, it might be time to rebuild or buy another carb. I'd either rebuild the carb yourself using a kit ($30 or so I think) or buy a Weber 32/36 DGEV. Rebuilt OEM carbs cost a lot, probably close to that of a Weber anyway.