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Re: 635 Engine miss at speed?? - me too... (archive)
[ Follow Ups ] [ 6-series (E24) Message Board ] [ Msg. Board FAQ ]
Posted by nik on December 01, 1999 at 15:04:21:

In Reply to: 635 Engine miss at speed??(More Info) posted by Nathan T. on November 27, 1999 at 02:05:47:

The same thing exactly happens to me with a 1986 635csi. It sure is irritating and a battery of mechanics have tried & failed to find the problem. It is probably NOT caused by my Bosch Platinum +4 plugs, adjustable fuel pressure regulator, ignition wires, external fuel pump, oxygen sensor, temperature sensor, or a faulty air induction system. The ONLY thing BMW could suggest was that my internal fuel pump was working intermittently... Of course they would say that 'cuz it is very labour-intensive to replace it (you have to remove the rear seat & go through a removable panel in the gas tank): and I'm convinced that bmw service personnel are rip-off artists extrordinaire.

If anyone else has this problem, please post the cure when you find it. If I replace my pump & that does it, I'll let everyone know, but... it sure is expensive...

nik

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