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PostPosted: Sun Sep 17, 2017 4:15 pm 
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Joined: Wed May 12, 2004 9:53 pm
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Location: Devon
We're trying to get GirlySaabFan's Abbott T7 running again after standing for a number of years. It won't start.
There is fuel (plenty of fuel smell, anyway) but no spark when cranking.

With the ignition on we can slacken the distributor and turn it back and forth to trigger a reliable spark from the coil lead. However, when cranking the engine the power supply to the ignition circuit fuse disappears. 0 volts at the fuse and at the coil, and presumably at the ignition amplifier since this is connected to the same fuse.

According to the wiring diagrams - Bentley and Haynes - the fuse is connected directly to the ignition switch, which is connected directly to the battery. We have the ignition switch connected as in the photo:

Image

Any ideas? Why could it be different when we crank the engine? As far as I can see there is no ballast system on this model.

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PostPosted: Sun Sep 17, 2017 4:44 pm 
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Sorted. We bypassed the immobiliser - first thing I tell people to do when their car doesn't start :roll:
Bizarre behaviour but we'll worry about that another day. For now, it's running for the first time in nearly 4 years! 8)

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PostPosted: Sun Sep 17, 2017 5:23 pm 
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Joined: Wed Nov 23, 2005 6:01 pm
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Location: Chasetown, West Midlands
Car Model: 1990 900i 2 door
That sorta suggests that if you were to bump start it, the car would run. ?


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PostPosted: Sun Sep 17, 2017 5:41 pm 
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If the car were allowed to go on the street and we could have manoeuvred it out of the driveway manually then yes, I'm sure you are right.

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