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- - Rough Cold Start ??? (http://www.unitedbimmer.com/forums/e46/11817-rough-cold-start.html)

Jerry Lochman

07-16-2007 12:00 PM

Rough Cold Start ???

here's one for you.... everyday when i start my 04' 325i for the first time (cold engine) the car starts rough but every time i start it there after it starts and run smooth. it's summer so it's warm out.... now , im guilty of putting low octane in her, could that be the reason ? It runs way too smooth to need a tune up. hmmm

Jerry Lochman

07-23-2007 05:59 AM

here's my update.... i filled her up with premium friday night and half the neighborhood came over saturday to see if the car would cold start rough. so i cranked her up and woosh...purrrrrrrrrrrrr she started smooth and quiet..... ok, im a cheap bastard but now i will put nothing but premium in my baby.... lesson learned....

nick_318is

07-23-2007 05:20 PM

There is a reason bmw says to put premium in them.

Numark318i

07-23-2007 11:03 PM

yea, our 330 would have slightly erratic idle with 87...i put 92/91 in her and she idles perfectly.

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