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Problem for BMW Cars
Generic problem for all BMW 750 Cars
1989 BMW 735i Hot start issue
By rustfarmer on May 23, 2008
After shutting off warmed up engine and sitting for ten mins. or so, upon restart engine runs rough and seems flooded and revving engine several times will clear problem, I know there is a cols start injector, but if car sits for only 2 or 3 mins. problem does not happen. Is it more likely that temp sensor is sending wrong temp, or that injector is slowly leaking down? How hard is it to change this injector?
Comments:
Aug 28, 2008
- Where is the cold start injector and is it easy to swap?Nov 06, 2008
- where is cold start injector located? My crappy Haynes manual doesn't give any info. ThanksSame Problem
Jan 11, 2009
- hellow from Joseph .new to bmw.i need specs on sensors any help . appreciated 1985 bmw 735i .runs great until warms and idle slows then starts crapping and shuts down will start after cools off . ------------------------------------------------------------------ new to bmw - ojoseph3rdBest Solution
posted on May 23, 2008
You might want to try replacing your throttle return spring, or at least lift the hood and see if here is a change while it smooths out..
Comments:
May 23, 2008
-- Look for visible signs of leaking around the cold start injector.
- When foreign material gets into a cold start injector, it can leak. This will result in rough idle and backfire.
- Residual fuel pressure (pressure remaining in the line after the pump is off) can cause the injector to leak. This can cause hard starting and an overly rich mixture during starting.
Yes
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This Problem Also Relates To:
2007 BMW 525xi Sedan
1992 BMW 3 Series
2003 BMW 330
1990 BMW 5 Series
1994 BMW 7 Series
1998 BMW Z3 Roadster
2005 BMW M6
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