Hi i have a 320 e30 when i drive it and it gets warm it starts to miss fire i have changed the coil,dizzy cap and rotary arm, ht leads and plugs all new could any one shed some light maybe
thanks
miss fire
Moderator: martauto
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bensr20
- E30 Zone Newbie
- Posts: 10
- Joined: Mon Feb 27, 2012 11:00 pm
I've got the same issue at the moment. Can anyone help please?
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Brianmoooore
- E30 Zone Team Member
- Posts: 49359
- Joined: Mon Jan 10, 2005 11:00 pm
For anything that changes when it warms up, the first thing to check is the coolant temperature sensor and the plug and socket its wiring passes through (facelift M20s only) where the injector loom joins the main engine loom.
For a general misfire, check that compression is up to scratch, and, if the ignition components are known to be good (if you changed the leads for aftermarket, put the originals back), then start looking for air leaks, especially one peculiar to the misfiring cylinder, such as the inlet manifold to head gasket, and consider that often overlooked item, the injectors. If they've done more than 50k miles they are desperate for a rebuild. (£10 each).
For a general misfire, check that compression is up to scratch, and, if the ignition components are known to be good (if you changed the leads for aftermarket, put the originals back), then start looking for air leaks, especially one peculiar to the misfiring cylinder, such as the inlet manifold to head gasket, and consider that often overlooked item, the injectors. If they've done more than 50k miles they are desperate for a rebuild. (£10 each).