Missfire From Ht Coil - BMW Forum

wolf2000 · 02-11-2005, 12:01 PM

Hi new here hope some one can help.
I have a 1988 530i e34 188k miles.
All new leads dizzy roter etc. But I have a missfire from the coil, Have had ecu checked came back ok also tried a new coil and still the same. new coil wouldn't fit though have they changed will I need to make a new bracket for it.
Any Ideas
Cheers

njtech · 02-12-2005, 07:42 AM

what do you mean you have a misfire from the coil? Is the coil weak, does it produce enough spark? If you have a misfire situation, check the basics...vacuum leaks, good spark, injectors working. the older 530 have problems with the blocks being junk causing misfires and rough running.

Apogee · 02-16-2005, 09:02 AM

Hi

Hope you have sorted your misfire. I have a 1998 523i SE, and developed a misfire which I thought was one of the coils. However, much more cheaply (!) the computer identified that it was a knock sensor. That is what we call them in the UK anyway. The car has several on the crank and elsewhere, if they go the timing and fuelling is set to a safe position, but the car will misfire under load.