| mawo |
Wed Mar 24, 2021 11:49 am |
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Hello, I have a Porsche G series from 1984, the car does not start, the engine control unit has a gnd and 12v, the relay is functional, no spark on the ignition coil, I present readings from speed transmitter sensors and mark transmitter referece. I need any advice, thanks
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| GH85Carrera |
Fri Jun 11, 2021 9:57 am |
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If you have the original Bosch black coil it usually works unless it is leaking the goo tar like stuff inside. If you have the replacement Bosch Silver coil sold at the dealership or any source, it is 50-50 if the coil is any good.
The first thing to check is always the DME relay under the seat. Replace it with a new solid state version, or borrow one from a working Carrera.
If that does not get results squirt some starter spray in the intake and see if it fires at all. If it does, your fuel pump is not making pressure.
The old black coil is a rare failure. The DME relay is common, especially if it is original. The DME relay has a date stamp on in and if it is original, replace it regardless. Next step is the two flywheel sensors. Get the BMW versions. 1/2 the price, and the only difference is the wires a few inches longer. |
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