cosworth missfire
31-05-2009, 11:37 AM
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cosworth missfire
I have a saphire cosworth with a bad misfire at idle and up to 2000 rpm . The plugs are new and injectors new , where do i start looking
31-05-2009, 01:23 PM
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Check phase and crank sensor
31-05-2009, 03:53 PM
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If it's ok after 2000rpm I'd also look at the co.
31-05-2009, 09:36 PM
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compression?
02-06-2009, 06:55 PM
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what is the gap supposed to be on the sensors , after 2000 rpm the car pulls well and clear
02-06-2009, 07:30 PM
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Phase sensor is 0.2mm to 0.3mm
03-06-2009, 04:53 PM
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thank you i will pull the feeler gauges out and start measuring
08-06-2009, 01:01 PM
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Had the same problem. Changed every sensor plugs, leads, cap and in the end found the fuel pressure regulator vacuum pipe connector was sending fuel back into the plenum. changed the regulator and cured the problem.
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08-06-2009, 01:01 PM
