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850 92k 'running rich'................? 850

posted by  someone claiming to be Frank on  Sun Jun 29 02:58 CST 2003 [RELATED]

I think that the tech assigned to your car misdiagnosed your initial problem. If your car has a vacuum line going to a fuel pressure regulator on the fuel rail, disconnect that line preferably after running the car until warm (IF you can get it to run) and see if gas is dripping from the regulator. Not all cars have it, changed system in later years but on cars that have the earlier type systems with FPRs, when they fail it's a common reason for running so rich that you see black clouds and if bad enough, it'll flood the engine too. Your engine oil will smell like gas, plugs will be carbon fouled.
A bad ECT sensor will also do that but you'ld get a code, check engine light.

I have not ever seen a bad MAF causing that on an 850, nor do I think that the idea here of disconnecting the battery will help.






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