2001 BMW 3 Series
Problem for BMW 2001 3 Series

Starting and rough idle




By a_garside on Aug 31, 2009

" "
when first starting the engine struggles to fire on occasion, also when idling engine sometimes cuts out, i have changed spark plugs and cleaned out throttle body.

Solution #1

posted on Sep 08, 2009
Not Rated)

shhourti

Rank: Apprentice 
Rating: 0%, 0 votes
I had a very similar issue. Mine ended up being my "lower crankcase vent tube" It apparently had a hole in it that was causing oil to spew all over (and causing my valve cover gasket to leak as well due to a pressure issue). Got that replaced last Friday (my mechanic discovered it when he was replacing the belts I slung on Wednesday) and the car has started perfect ever since.
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Solution #2

posted on Aug 31, 2009
Not Rated)

rlmvbc

Rank: Guru 
Rating: 90%, 104 votes
change fuel filter. add can of Seafoam to 1/2 tank of Premium gas. Ethanol gas syndrome. it turns fuel to goop and loads fuel lines with water. common occurance with ethanol gas. add 3-5000 miles with SF, and it should straighten out. in severe case you have to change out f filter again at 100 miles. look at the gas in the old fuel filter. it should be brown or milky. good luck.
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