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Silver Fox

M40 dies when hot

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Starts fine when cold, but once hot it dies, splutters a couple of times maybe and stops. When you try to start it turns over but won't fire. Have checked past topics and checked spark plugs, plenty of spark, and fuel delivery, seems strong when turning motor over. Have checked and changed coil. no diff and relays, no diff. If you let the motor cool down it starts. Where do I go next? Cheers.

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Have you replaced the two relays on the firewall along side the inspection plug? ones a fuel pump relay the others a ecu relay and they play up.

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Yeah, first place I went. have had the intake side off and found the bracket holding the idle regulating valve had broken and it had pulled out of the intake housing. Have put it back together and it seems to be running OK I hope, will find out in the morning if that was the problem.

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