3-Series (E21, E30)Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.
new to the community, and hoping to get some information.
and before you ask, yes i did use the search button. My uncle has an 82 320I that has a problem with fire. while cranking the engine over, there is no fire, but when you first release the key, and then engine is still cranking, there is an instant spark. if i remove the distributor, and turn it by hand, with the key in the run position, there is lots of fire. install the distributor into the engine, and no fire. i am thinking a bad ignition switch, that is preventing the coil from getting 12V while cranking, but i jumpered the coil + to the battery +, but still nothing. any insite would be greatly appreciated, as he really wants to get the car running before winter, so he can focus on the bodywork over the winter.
thanks for the reply. the cap/rotor and wires are fine, but not the issue, neither is the timing. i am testing with the plugs laying on top of the motor. when turning the motor over with the starter, there is no fire, until you release the key, and then it is only a partial spark. IF, i remove the distributor, and turn it by hand, with the key on, there is good spark on all 4 plugs. then, put it back in the block, and no fire...
distibutor turns fine while cranking the motor over with the starter. I dont believe that there is a mechanical issue with that. the only other thing i can think of is that there is an issue with the wiring, that is causing the lack of fire while the key is in the start position. initially, i thought i removed the issue by supplying 12V directly to the coil, but maybe there is more to it.
The AutoGuide.com network consists of the largest network of enthusiast-owned enthusiast-operated automotive communities.
AutoGuide.com provides the latest car reviews, auto show coverage, new car prices, and automotive news. The AutoGuide network operates more than 100 automotive forums where our users consult peers for shopping information and advice, and share opinions as a community.