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Non starting 964 C2 but has fuel and spark

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Old 09-08-2018, 02:12 PM
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Lambo
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Unhappy Non starting 964 C2 but has fuel and spark

Hi,

My UK 1990 C2 has been running fine but the other day after the car had been standing for a week it started as usual, coughed a few times then died. I haven't been able to start it since.

It spins over freely on the starter, has a yellowy spark and I can smell fuel in the exhaust. I tried a different DME but that didn't work.

It does make an brief attempt to start the first time I try to start it in the morning but then it will just turn over and make no attempt at all.

I did change the crank position sensor last year.

I've also cleaned out the idle speed adjuster.

Any ideas please??

Old 09-09-2018, 04:39 AM
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Navaros911
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What coils?
Fuel pressure regulator issue perhaps (check functioning)?
What is the fuel pressure during cranking?

Does throttle input make a difference?
Idle switch closed when no throttle input?
Air Flow meter working properly?
Air filter clean?
Could also be a combo of things.

I know this isn't the greatest reply, but it is a bit of a stab in the dark at the moment. Need a bit more info.

Old 09-09-2018, 12:12 PM
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Lambo
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Hi, there is plenty of fuel pressure. I don't think the injectors are pulsing as I took a plug out and it was dry as a bone.

The ignition seems fine with a decent spark.
Old 09-09-2018, 12:18 PM
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wallra
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yeah I was just going to ask If you had injection pulse. try spraying some carb cleaner in intake to see If it will fire.
Old 09-09-2018, 12:46 PM
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Lambo
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Default Fixed

I've fixed it.

When I changed the crank position sensor they come with a different style connector so I had to cut the old one off and splice on the new one.

One wire is an earth and a stray strand was touching the live. Connector tidied up and it's running fine.



cheers
Old 09-10-2018, 03:22 AM
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Navaros911
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Excellent... thank you for posting the solution.



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