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E24 no spark???
Posted: Sat Jan 19, 2008 8:48 pm
by raulandthetwins
Been to look at an old 635 thats been sat for a year, tried to jump start it and it will turn over but no spark!
Anybody got any clues?
It was raining called it a day before pi55ing around to much
Cheers
Re: E24 no spark???
Posted: Sat Jan 19, 2008 8:52 pm
by Speedtouch
Could be a duff ignition coil or ECU (or even missing altogether!), or a loose connection/bad earth. Best to check for power (12V pulsing with the engine turning over) reaching the coil low tension (LT) terminals and go from there.
Re: E24 no spark???
Posted: Sat Jan 19, 2008 8:58 pm
by raulandthetwins
Cheers the owners bet was a bad earth, trip out with the voltmeter me thinks, well if it finally stops raining!
Re: E24 no spark???
Posted: Sun Jan 20, 2008 6:09 pm
by Andyboy
Find the DME relay (five pin) on the fuse box. Check for 12v at the red wire (12v feed) with ignition on. No power = wiring fault. If there's power there, check for 12v at the red/blue wire (12v to ECU). No power there could be a bad earth (ground the connection to battery earth - ) or a faulty DME relay (very common).
Start there and let us know.