1986 golf troubles

[mlibby101]

I have recently inherited a late '86 early 87' vw golf. It ran fine last year then the clutch bracket shattered so it sat all winter until i could afford to get it fixed. It ran perfect before i parked it for the winter. Then, i got it fixed and there are a few problems with it. The most major problem is the engine is running very rough. The sparks are fowling very quickly. The car stalls constantly. There is a great loss in power also. there has been many hills i havn't been able to make it up. At first i thought that maybe i had a dead cylinder, but it appears they are all firing. I have no clue what the problem might be. I don't know if its connected but there is also another engine problem. if i keep it at 2,000 rpms steady it cuts back to around 1000 and then back up to 2000 and back down and it will do it all day if i keep the pedal in place. but, if i keep it above or below that level it doesn;t do it or if i give it gas through that speed it wont do it. Any help with these problems would be greatly appreciated.

[boschmann]

CIS fuel problems can be very difficult to figure out, and diagnosis can require specialized equipment. It seems to be running rich, a simple first place to look is at the coolant temp sensor. It's a two pin sensor located on the cylinder head water flange where the upper radiator hose meets the head. Resistance across the sensor should be around 2000-3000 Ohms @ 68 F and steadily decrease to around 200-300 Ohms @ operating temperature.

[mechy1barry]

seems to be mixture related,look at the carb mounting,is it split?test by starting engine and try moving carb,if engine speed increases/decreases,suspect mount.otherwise make sure all earths are secure.esp,at carb.

[mlibby101]

Thank you for trying to help me. I appreciate it. I tested the sensor with an ohm meter. The sensor its at the correct ohmage. Any toher help would be greatly appreciated.

[boschmann]

How old is the gas?

[mlibby101]

the gas is fairly new. If it helps, i accidently filled up with diesel a few tanks ago. I dont know if that would have a effect on anything.

[boschmann]

How much & how long has it been run since? How did you get it out? Does the car put out grey exhaust smoke? Have you cleaned the plugs since this incident?

[Slick13]

Whatever is coming out of the exhaust it won't matter much.

Get the entire system flushed, and then put a complete fresh tank of fuel in. Run the car through this entire tank and that should coat all of the relevant parts again.