I have a VW mk2 Golf 1300 with transistorized ignition and 2E3 carb. Sometimes after driving at 60 mph then slowing down to 20 mph the engine will become very hesitant and power is reduced, eventually there is no response from the accelerator and the engine will chug to holt and then off. The engine does not re-start strait away. I have to wait 2 minutes say before the engine can be restarted, then all is normal again.
Also in general the engine will sometimes hesitate, especially when pulling away.
When at home I removed the vacuum pipe connected to the distributer vacuum advance unit, I drove a few miles and was able to replicate the problem of the engine being hesitant with reduced power. But there was still a vacuum coming from the removed pipe when I put my finger on it (no throttle apllied).
The hesitant and chugging symptom was not really a spark plug misfiring as I removed a plug connector and the misfiring sound here was different.
The fuel filter is fairly new and the fuel pump was replaced, this did not solve the problem. All ht leads appear in good condition.
|