85 bmw 735i-- won't start up--it will crank over

Jun 23, 2008 6 Replies

it will turn over fast but won't start..12v coil has fire on both primary post but no fire at the secondary post that links the distributor. fuses good.fuel delivery good. got any suggestions.


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"bojames" wrote

Check the battery voltage; I've seen them turn over but be too weak to give an adequate spark. Check coil output.

Might help if you mention the model and engine.

FloydR

Er see subject - 1985 BMW 735i - so it is an E23 with an M30 engine.

Charge up the battery with a charger and see what happens.

thanks, i've tried another coil and new battery,

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thanks mike,for tickering my brain, hot diggie dog, it was the main relay, on the passenger side firewall, in the engine compartment, a 5 prong square relay, just above the hood latch

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thanks guys, mark and floyd

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