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Re: Hard to start when hot. (archive)
[ Follow Ups ] [ 7-series (E32) Message Board ] [ Msg. Board FAQ ]
Posted by David F on October 29, 2001 at 09:48:31:

In Reply to: Hard to start when hot. posted by Tim Haines on October 28, 2001 at 20:01:19:

Try using a good quality fuel additive/cleaner (like BG (products) 44K). If the injectors are dirty, they will not seal closed properly and can drip fuel into the cylinders thereby flooding the engine. A flooded engine is always hard to start when warm. Starts good cold because the extra fuel is needed to aid starting.


Ok tried the BMW check vavle fix kit, helps a little, fuel pressure is good. In going deeper to the root of the problem.
When the car is cold, it starts perfect, when the engine is hot and sits for 15min to an hour or the temp needle is still at 12 o'clock it cranks longer then starts, sometimes cranks starts, stalls and can be restarted to run normally right away.
ran the code check , accelerator 5 times key in run, again accelerator 6 times in run,
ecu 1 came back with code 1222 oxygen sensor over or under range, may be a bad lamda sensor. 2nd ecu came back with 1444 no codes found. What are the chances that replacing the oxygen sensors would cure this problem?
Any suggestions appreciated.
I hate toubleshooting by throwing time and money at the problem.
Best regards, Tim




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