Having difficulty starting engine when cold - BMW Forum - BimmerWerkz.com
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#1 (permalink) Old 11-16-2009, 03:01 PM
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Having difficulty starting engine when cold

When my 1999 740i sits in my garage overnight, I have a difficult time starting it up in the morning. The engine is turning, but takes a few key strokes (5-6 times) to start up. When the engine is warm, or after driving around, there is no issue at all to start it up.
Can anyone give me some ideas what to replace?
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#2 (permalink) Old 11-16-2009, 04:06 PM
OMFG another one!?
 
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Has the fuel filter been replaced?

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#3 (permalink) Old 11-16-2009, 04:18 PM
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No I haven't, but I could replace it. I will give that a shot
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#4 (permalink) Old 11-17-2009, 10:02 AM
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It may be a single or a series of slightly stopped up injectors. Bmw makes a special fuel injector cleaner for their cars. Use only this in a BMW. It runs about 15 bucks a bottle and can be bought at your beamer dealer. Its a black bottle.Even if this doesnt fix your problem it will definitely help your performance and fuel mileage. It fixed the very same problem on my 1990 735il. I feel very strong about it being the fuel filter too. First i would change the filter then try the injector cleaner. You do know where the filter is dont you?
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#5 (permalink) Old 11-17-2009, 10:36 AM
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Under the car towards the rear?
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#6 (permalink) Old 11-17-2009, 11:06 AM
Help from over the pond
 
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Under the car towards the front you will see a rectangle flap with screws, thats where it is, well here in the UK it is so must be world over I would have thought and here its on the drivers side, on the right looking from the rear.

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#7 (permalink) Old 11-18-2009, 12:24 AM
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marti 5 is exactly correct and wins the prize on todays episode of who knows their beamers. Yep thats where it is. if it isnt hand tight then dont use pliers unless you can get another one that day because the pliers will cause the walls of the filter to collapse inward and possibly puncture the filter which leaves you weithout a car until you get another. do it towards the bottom if you do use pliers in order to prevent scarring the threads.
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#8 (permalink) Old 11-18-2009, 12:26 AM
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Its still on the same side too in case your wondering its just the passenger side instead of the driver side. Only Difference in a U.S. and U.K. bmw.
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#9 (permalink) Old 12-22-2009, 12:19 PM
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It turned out to be the ignition switch
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#10 (permalink) Old 12-22-2009, 12:35 PM
OMFG another one!?
 
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Glad to see you got it sorted!

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