My bike just started running rough, and was like it was only firing on 3 cylinders
SOURCE: What causes premature wear in the rings and bore of BMW K75s?
the K75 has very reliable engine .. its unusual for it to fail in this way .. the frozen rings would suggest overheating and thats possible if the radiator fan fails (that happens often before your 80,000) .. many of the pre 1990 k75s would smoke after storing for awhile .. that was a ring gap positioning problem .. that was corrected in newer models .. the smoke however would not have damaged the cylinders .. maybe in the extreme could foul a plug .. is it possible that someone put something in your gas tank ??.. or could it have been run without oil/water or perhaps the wrong type oil (like transmission fluid) ... that engine should have lasted longer than most cars .. nice smooth bike ..
SOURCE: 316 bmw compact,runs rough some times,engine sign
check for a wet ecu may be corroded...
the ecu compartment is under the windshield on the passenger side on E36
you gain acess to it under the hood....
this compartment gets wet, the ecu lays on a flat surface in that
compartment.
the bottom side of the circuit board gets wet and starts corrosion.
remove the ecu, take the bottom plate off, clean the bottom of the circuit
board with alcohol and a soft tooth brush.
you should be able to see the signs of corrosion or conductive build up.
this gunk bridges solder points doing all sort s of wierd things to your
car, including false sensor readings from asc/abs controllers and other
sensors....
all the way to engine failure and worst case burnt and shorted wiring
harness.
I'm on my 3rd ecu, took me and the repair boys a few years to figure this
one out.
BTW: i would get that ecu mounted above that flat surface, use some sort
of standoff to raise it so that it is not laying in the wet.
SOURCE: Looks like the port-side head gasket is blown. Is
its not an easty job to do but with a good manual and some good tools you can do this job your self
and save your self a good fuw bucks as well
SOURCE: bmw 3 litre diesel engine miss fire. Cylinder 5
Bude to injector,kdy? "no fire" tak u diesel motoru = "no dieselfuel"
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