1999 Other Plymouth Models Spark Plugs

SASS333

MEMBER
1999 PLYMOUTH
4 CYL
FWD
AUTOMATIC
152,000 MILES

Replaced water pump, car has been backfiring and losing power since, checked spark plugs and all 4 have oil on them, any idea what could be wrong? :S

Tuesday, June 3rd, 2008 AT 9:31 PM

1 Reply

MMPRINCE4000

MECHANIC
8,549 POSTS

Check all electrical connections and look at the areas you were in when changing the WP. Make sure the PCV valve is working.
If you have any codes, scan the PCM. Sometimes when working on a car you can inadvertantly break a vaccum line or pinch a spark plug wire etc.
Carefully go over the car, again checking items you disconnected or touched when changing the WP.