Just wanted to stop in and say hello. Also have a problem. I bought an 87 pickup with the 22r and the guy said not to put over 15$ gas in it because the tank leaked. Well, I drove it a little bit and decided to put 20$ in and see if I could find the leak. As soon as I put the gas in I had a hard time getting the truck started and when I did and drove off it went to spitting and sputtering and didnt want to take off. Anybody had anything like this happen? Thanks

 

Carb'd or EFI?

I know you said 22R, but some guys forget to add that "E" for fuel injected... Makes it a whole other animal...


If it were mine, and since it seems to be fuel level related, I'd drop the whole tank, see if I could find any obstructions or crap in the lines or tank itself, and fix whatever I found.

I would replace rubber fuel lines and filter since they're cheap. If its EFI, check your hard lines for corrosion internally. All this ethanol crap is wrecking havoc on the older stuff, from my experience. That's why I run ethanol treatment/helper additive every couple of tanks.

It could end up being fuel return related, but that's just going off the situation being fuel level related.

 

I forgot to say it is carb'd. Thanks rokblok

 

Well, two things. One is that you may have a venting issue for the fuel tank. As the fuel is being drawn out of the tank from the fuel pump, vacuum is forming inside the tank. However, since the previous owner says the fuel tank leaks, that should rule out an air-tight seal in the tank. You can confirm a faulty venting fuel tank by driving the engine with the fuel cap off. There is a check valve in the gas cap to allow air to enter the tank under vacuum.

There are three fuel tank lines for a 22R. One is a supply line to the fuel pump. One is a return line from the fuel pump. And one is a fuel vapor line that is suppose to run to the charcoal canister in the engine compartment to aid in emissions (fuel evaporation).

Second would be, check the fuel level in the carburetor sight glass when you are having these sputtering conditions. That is if they happen during idle. You may be experiencing fuel starvation.