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91' 744 Misses When First Started 700 1991

posted by  someone claiming to be Glen on  Sun Jun 23 13:24 CST 2002 [RELATED]

The missing problem seems to be worse when there is high humidity and when it is cold here in Minnesota. After the car is started, the missing occurs on two cylinders, then one, and after a minute or so it runs fine. I have replaced the distributor cap, rotor, distributer O-rings (2ea) and just replaced the spark plugs. The plugs were a little browner than I have seen on my other 240 and 740s (Bosch WR7DP). The timing is not adjustable on this car and is 10 degrees before TDC. It is supposed to be 12 degrees before TDC according to the owner's manual. I don't know if this could be the cause, but doubt it. I have new plug wires on my other 744 and am considering swapping the plug wires but thought I should ask you folks for ideas first. The car has 133K miles on it and is non-turbo. Thanks in advance.






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