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87 244 rough running at start 200 1987

uid 27's pic
posted by  Art Benstein on  Sun Apr 23 04:37 CST 2023
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last visit: Fri Oct 17 20:10 CST 2014
[RELATED]

Your symptoms match what I've had when just one injector is leaky. The flooding occurs slowly after you shut down the engine. It takes a half minute to clear it.

A fuel pressure measurement will show the rest pressure decreasing more quickly than spec, which is after 20 minutes, must be more than 1 bar.

The fuel may run into an open cylinder, so you'd be able to find it if you pulled the plugs in the morning instead of trying to start it, but the wet cylinder may not correspond to the adjacent fuel injector. You might pull the rail instead to check the injectors after the engine is shut down and cooled. Without a fuel pressure gauge, guesswork must be employed.

Edit: On more careful reading, I see you've replaced all your injectors. I'd definitely want to get a gauge on the rail, or at least pull it with the injectors to check for leaks.
--
Art Benstein near Baltimore

Sometimes I wonder if our lives are all about the challenge of keeping gases and liquids where they belong.






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