i just did a valve adjustment on my 89 325is. after i was done the car had a funny idle that gently shook the car side to side a little and when i am at a light the check engine light comes on. once i rev up to go the light turns off. the valves were loud before i did the adjustment and now you can hardly hear them. should i go back and redo them or is there something else to look at.
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funny idle after valve adjustment
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Could be.
You have a 19 year old car and it is a good bet that most if not every hose associated with the intake is either cracked or about to crack. You can play "20 questions" with the car over time hunting for and fixing one intake leak at a time, or eliminate all possibilities by replacing every hose as well as the dipstick o-rings and oil filler cap. In a like manner, new ignition wires, distributor rotor & cap, and new O2 sensor are probably needed (unless recently replaced).The car makes it possible, but the driver makes it happen.
Jim Levie, Huntsville, AL
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Your valves are to tight.
I did the exact same thing. After the first adjustment, valve noise was gone but idle was poor...idle as if the engine was missfiring. Checked the valves again and found them all to tight. I adjusted them again, after I was done, engine idle is now smooth and perfect. The valves are a bit louder than first adjustment but I understand this is normal on the M20.
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Originally posted by redlinewins View PostYour valves are to tight.
I did the exact same thing. After the first adjustment, valve noise was gone but idle was poor...idle as if the engine was missfiring. Checked the valves again and found them all to tight. I adjusted them again, after I was done, engine idle is now smooth and perfect. The valves are a bit louder than first adjustment but I understand this is normal on the M20.
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Check for a leak in your valve cover. If you don't seal these off right, It will cause poor idling and a shitty throttle response.sigpic...
1991 325is- Current Project w/ 150k on the clock
1990 325ic- SOLD w/425k on the clock and still ran!
1985 528e- SOLD
1972 2002tii-Should have never sold it!
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