L-jetronic Troubleshooting, Runs Rough and Runs Rich |
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L-jetronic Troubleshooting, Runs Rough and Runs Rich |
BENBRO02 |
Nov 26 2017, 05:50 PM
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#1
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Member Group: Members Posts: 483 Joined: 6-March 15 From: Nokesville, Virginia Member No.: 18,493 Region Association: MidAtlantic Region |
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 |
Nov 26 2017, 09:39 PM
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#2
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missing my NY 914 in VA Group: Members Posts: 1,336 Joined: 26-November 07 From: Oakton VA Member No.: 8,376 Region Association: MidAtlantic Region |
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 |
Nov 26 2017, 10:15 PM
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#3
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Member Group: Members Posts: 483 Joined: 6-March 15 From: Nokesville, Virginia Member No.: 18,493 Region Association: MidAtlantic Region |
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 |
Cupomeat |
Nov 27 2017, 02:30 PM
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#4
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missing my NY 914 in VA Group: Members Posts: 1,336 Joined: 26-November 07 From: Oakton VA Member No.: 8,376 Region Association: MidAtlantic Region |
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 Sorry for the delay, it is the stack below the oil fill. There is a cork gasket between it and the block that can sometimes leak air. Good luck! |
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