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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 06-25-2012, 05:19 AM   #1
SuperhitsBMW
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Join Date: Feb 2011
Location: Hampshire
Posts: 8
My Ride: 318ci Coupe 2.0
2001 318ci m42 cold start problem. - see YouTube video!

My 318ci has trouble starting from cold.

Itll start, die, then have the problem shown in the video.



Will start if I persist but will run on 2 cylinders, then 3 then eventually 4 when it's warm. Once warm, she runs beautifully. These problems seem to have started after I changed the battery?

It's LPG converted,

143,000 miles
I have had the coils, plugs, O2 sensor, and cam shaft sensors done but to no avail.

Has a fault when plugged in, so we changed the O2 sensor accordingly but still happening.

Any ideas would be greatly appreciated!

Best

Alex
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Old 07-30-2012, 09:08 AM   #2
SuperhitsBMW
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Join Date: Feb 2011
Location: Hampshire
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My Ride: 318ci Coupe 2.0
Anyone?
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Old 05-25-2015, 05:33 AM   #3
Grantos
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Join Date: May 2015
Location: Newport
Posts: 2
My Ride: BMW 318Ci
Hi, did you ever solve this issue I'm getting exactly the same problem?
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Old 05-25-2015, 08:31 AM   #4
djdonis
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Join Date: May 2009
Location: Charlotte
Posts: 390
My Ride: 330i 6sp, 330i 5sp
Check your fuel pump.

A car engine depends on two systems - fuel delivery and ignition. You either get no fuel or no spark. BMW are not really known for ignition system problems, but fuel pump failures are pretty common.
Also check vacuum lines on the "F" connector that run from the intake boot, one of them runs to the fuel filter...
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Old 05-25-2015, 10:06 AM   #5
Grantos
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Join Date: May 2015
Location: Newport
Posts: 2
My Ride: BMW 318Ci
Hi thanks for the input, I should have mentioned I am a mechanic, specialise in VAG group but drive BMWs lol. The fuel pump is fine, the vehicle will eventually start after much starter motor cranking horror. It over fuels which seems to be the problem, it starts immediately and then dies on the first go. Then upon the second crank its injected that much fuel its washed the bores and has no compression. There are no fault codes, I've tried little things like unplugging maf, coolant temp sender. Can't see any evidence of problems looking at live data! Just a bit lost at present to be honest!
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