03 3.0 Crankcase breather hose broken causing missfire?
#1
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Just replaced spark plugs, coils, valve cover gaskets, and resealed lower oil pan. Started car up and it was missfiring bad. Got codes p0300, 302, 303, 304, 306 (300=multi missfire and the 2, 3, 4, 6 are specific cylinder) and 0441(evap system, incorrect purge flow). So I went so far as to pull all spark plugs back out and double check everything which looked good and put it back together.
Started it up and had a missfire again this time with codes 300, 301, 302, 305, 306.
The only thing I could find was the crankcase breather hose on the left side(driver side) attached to the valve cover was broken(seperated in 2) right at the flexible part. Will this cause a missfire? I don't know if the hose was already damaged before, being that I just noticed it. Would appreciate any help. Thank you
Started it up and had a missfire again this time with codes 300, 301, 302, 305, 306.
The only thing I could find was the crankcase breather hose on the left side(driver side) attached to the valve cover was broken(seperated in 2) right at the flexible part. Will this cause a missfire? I don't know if the hose was already damaged before, being that I just noticed it. Would appreciate any help. Thank you
#4
![Default](https://www.audiworld.com/forums/images/icons/icon1.gif)
Just replaced spark plugs, coils, valve cover gaskets, and resealed lower oil pan. Started car up and it was missfiring bad. Got codes p0300, 302, 303, 304, 306 (300=multi missfire and the 2, 3, 4, 6 are specific cylinder) and 0441(evap system, incorrect purge flow). So I went so far as to pull all spark plugs back out and double check everything which looked good and put it back together.
Started it up and had a missfire again this time with codes 300, 301, 302, 305, 306.
The only thing I could find was the crankcase breather hose on the left side(driver side) attached to the valve cover was broken(seperated in 2) right at the flexible part. Will this cause a missfire? I don't know if the hose was already damaged before, being that I just noticed it. Would appreciate any help. Thank you
Started it up and had a missfire again this time with codes 300, 301, 302, 305, 306.
The only thing I could find was the crankcase breather hose on the left side(driver side) attached to the valve cover was broken(seperated in 2) right at the flexible part. Will this cause a missfire? I don't know if the hose was already damaged before, being that I just noticed it. Would appreciate any help. Thank you
thus causing misfire.
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