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Stall & misfire resolved (hopefully)
Posted by TRJ (more from TRJ) on Wed, 30 Jul 2003 15:09:56
In Reply to: Re: Weird tach variations &stall, jim kane, Sun, 27 Jul 2003 18:41:59
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The problem became worse: it misfired, sputtered and/or stalled every time I took it out. An adaptation run after a new air filter two days ago had no effect. Restarting became such an issue that I wouldn't take it out.
Today I did the following:
Disconnected the battery ground for an hour.
Inspected innards of DI cassette: no signs of oil leakage
Inspected plugs: uniformly good color, no signs of arcing on insulators
Applied dielectric grease to DI boots for the 1st time.
Checked vacuum/boost lines: no apparent leaks or failed items
Replaced fuel filter
Added Gumout Fuel Injection Cleaner and filled up with 93 Octane (normally run 87).
It was running very rough to and from the gas station until I remembered to tighten down the DI cassette.
Took it for another drive and it was fine.
I'll presume it was the fuel filter, but it still seems odd that a bad/clogged fuel filter could cause that much trouble. My other theory is the injectors were clogged. I guess I'll never know for sure.
'91 9kTCD 160K
posted by 68.198.101...
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