cosworth misfire cyl 1

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27-02-2009, 01:12 PM

madcossy

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cosworth misfire cyl 1

can annyone help got an annoying misfire on plug 1 changed all plugs leads cap rotary arm ignition amplifier when i pull plugs out 3 are normal and plug 1 is sooty

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27-02-2009, 01:23 PM

grcossie

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Maybe a injector leak. I had the same on my ex Sierra, it was the earth lead to injector, that was unisolated and earth in fuel rail, then it it was open all time. Check wire

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27-02-2009, 01:25 PM

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Temporarily swap the injector plugs with cylinder 2 to set if it comes back alive.

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27-02-2009, 01:43 PM

JamesH

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Take injector clip off injector 1 and check both wires are seated in the connector properly

If not then push them home

If they are, then try swapping an injector or an injector plug as per Simon