Focus Fanatics - View Single Post - Symptoms of a valve seat about to drop?
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Old 02-07-2013, 08:36 PM   #14
Gets more V8
mikebontoft's Avatar
Join Date: Aug 2008
Fan#: 58647
Location: Taylorsville, UT
What I Drive: 1994 Toyota 4Runner

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It can drop on any.

I still don't think it's a seat issue. It wouldn't run lean on that cylinder anyway, it would run rich.

I would be looking for an intake manifold leak if it's on a single cylinder. of course, just because it only has the code for one cylinder doesnt mean it's the only one.

For the record, mine would randomly run like crap no matter if it was warm or cold. During warmup enrichment, there's quite a bit of extra fuel (hence the enrichment). Enough that it may not make a small leak noticeable.

Time to grab a can of carb cleaner or something similar and spray around the intake manifold. (and any other vacuum source for that matter).
SR #127 | '02 Focus SE "Foci" (5.0 in progress) | '90 Mazda 626 GT "Greenie" (2.2L turbo T3/T4 rebuild-selling) | '94 Toyota 4Runner SR5 "Roach" (daily-stockish) | '75 BMW 2002 "Carby" (resto-mod) | '75 BMW 2002 "unnamed" (donor race car)
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Originally Posted by GonOvr View Post
I had a spare tire go up in flames once, my truck was hit with an rpg though.
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