OT- Hard starting BMW, Fuel injectors? |
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OT- Hard starting BMW, Fuel injectors? |
jnp914 |
Feb 2 2004, 10:04 AM
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#1
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Member Group: Members Posts: 177 Joined: 19-August 03 From: Las Vegas, NV Member No.: 1,046 |
A friend just asked for help in diagnosing his BMW:
-starts fine when cold -starts fine immediately after turning it off -impossible to start after 15 or 20 minutes -starts fine when you wait until the engine is cold To me, sounds like something in the enrichening circuit, blah blah. Any ideas? |
Greg |
Feb 5 2004, 02:48 PM
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#2
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Copper Metalic Member Group: Members Posts: 50 Joined: 14-March 03 From: Bellevue, WA Member No.: 428 |
Duckrider-
I would agree with your assesment (and I'm far from an expert on this) however, I know that these FI systems have a cold start injector that provides an extra squirt of fuel during a cold start. This is controled by a temp sensor on the block and won't allow this extra injector to opperate under warm starts. My understanding is that if the static fuel pressure drops (ie overnight) the cold start injector will mask this problem, but it becomes aparent when warm and the injector is disabled. This is just my $.02 based on where I'm at with trying to solve my own version of this problem. DR, where would you recommend checking if this isn't a fuel problem? what about the 02 sensor? Thanks! |
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