hiya all,
my 325i has developed a very bad misfire, but it come and goes.
i started with changing my plugs- the old ones were very black..
next on my list i think would be the leads, cap n rotter. but i did ask a friend he was suggesting flue filter or a sensor.
any advise would be helpful
many thanks aaron
misfire
Moderator: martauto
-
Brianmoooore
- E30 Zone Team Member
- Posts: 49360
- Joined: Mon Jan 10, 2005 11:00 pm
If this is a post facelift engine, start by measuring the resistance of the 'blue' coolant temp. sensor AT THE ECU PLUG, with the engine stone cold and then at full working temperature.
While measuring the hot resistance, reach under the inlet manifold and gently move the wiring to the round plug and socket fixed to the metalwork, which goes to the injectors. Do not move this wiring before taking the initial readings.
The resistance reading will gradually increase while you do this, but you are looking for sudden jumps.
While measuring the hot resistance, reach under the inlet manifold and gently move the wiring to the round plug and socket fixed to the metalwork, which goes to the injectors. Do not move this wiring before taking the initial readings.
The resistance reading will gradually increase while you do this, but you are looking for sudden jumps.