L-jetronic Troubleshooting, Runs Rough and Runs Rich Options

[BENBRO02]

It starts okay when cold and only has a slight miss but as it warms up it starts to miss more frequently, bucks, and if hot and idling may cut off completely. If I'm on the highway it may lose 20 mph before it starts running well enough to maintain speed or accelerate. I have recently had the following replaced:

fuel tank
fuel pump
fuel lines and hoses
fuel sending unit
vacuum hoses
large and small injector seals

The shop also checked the vacuum advance and cleaned the injectors.

I emptied my bank account with the repairs so now it's time for me to find the problem. Any Ideas? The car has a Pertronics ignition.

[Cupomeat]

I'd do whatever you can to make sure there is no vacuum leaks. Places I thought I had fixed before were the Valve cover gaskets (Sometimes the top of the gasket sags to allow a leak), oil filler cap gaskets AND the gasket between the oil air separator and the case. Try smoke or just using starter spray while running. Looks for something that may move when running.

Now, since you are saying there is intermittency, I'd agree with Jim and look at wiring as well.

Good luck!

[BENBRO02]

I'd do whatever you can to make sure there is no vacuum leaks. Places I thought I had fixed before were the Valve cover gaskets (Sometimes the top of the gasket sags to allow a leak), oil filler cap gaskets AND the gasket between the oil air separator and the case. Try smoke or just using starter spray while running. Looks for something that may move when running.

Now, since you are saying there is intermittency, I'd agree with Jim and look at wiring as well.

Good luck!

Where is the oil air separator located?

Thanks