Hello all,
I bought mu wife's 99 Coupe last Oct with 40,500 miles. We have rarely driven the car since (now at 43,050 miles after 11 months).
The car has always had a cold start issue, rough-shaky/border line misfiring during starts especially if the car has been sitting for days, which in our case is almost always the case.
I searched this and other forums and a few people suggested using a batch of 89 Octane fuel. I did just that and voila, the cold start-shake-misfire is gone (on cold starts)
just wanted to share in case someone else is having the same issue
I bought mu wife's 99 Coupe last Oct with 40,500 miles. We have rarely driven the car since (now at 43,050 miles after 11 months).
The car has always had a cold start issue, rough-shaky/border line misfiring during starts especially if the car has been sitting for days, which in our case is almost always the case.
I searched this and other forums and a few people suggested using a batch of 89 Octane fuel. I did just that and voila, the cold start-shake-misfire is gone (on cold starts)
just wanted to share in case someone else is having the same issue
Rough Cold Start fixed on a 43K mile 1999 M coupe..
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