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Re: 633 wont run under 2500 rpm Help! (archive)
[ Follow Ups ] [ 6-series (E24) Message Board ] [ Msg. Board FAQ ]
Posted by Chandler Ogden on January 20, 2000 at 19:30:03:

In Reply to: Re: 633 wont run under 2500 rpm Help! posted by DonM on January 19, 2000 at 14:41:27:

I concur with the fuel pressure regulator...I had the same problem. Watch running it too much in the diagnosis mode; an overly rich running condition can cause failure of the catalytic convertor....(as in big chunks of ceramic honeycomb bouncing around in your muffler.)

Bentley gives a good diagnostic procedure in the E28 manual.

Good luck,

Chandler
'85 535i
ex '81 528i

: : My car after setting over night in the rain stoped running under 2500 rpm, and it is hard to start because I have to rev it right away to keep it running otherwise it just stalls. Any suggestions at what to look for or try before dealing with a shop?

: : Steve Eggen
: : 82 633csi


: Check the fuel pressure regulator located at the end of the fuel injector rail. I had a similar problem caused by the fuel pressure being too high and flooding the engine at low rpm.



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