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Old 07-29-2003, 00:11   #1 (permalink)
ant@ears
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mad cosworth misfire

hello can any boby help me, i have a sierra cosworth 4x4 and have a really annoying misfire midrange, i have changed everything, all sensors, plugs leads, dizzy cap. rotor arm, coil everything but still have this misfire.
any boby got any ideas??????
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Old 07-29-2003, 01:28   #2 (permalink)
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Ant@ears
Could be any number of things,check feul presure,filter,pump,injectors
Have you checked the plugs for condition as it may be leaning out.

Christ who knows

go to "turbosport.com" these guys are cosworth fans as well as "RSOC"
Rs owners club.
These boys should be able to help you out with your cossie.
Good luck
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Old 07-29-2003, 03:50   #3 (permalink)
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Re: cosworth misfire

Sierra 4x4?? Is it a hi-rider, or a WRX-style sporty 4WD??

I don't know much about these motors, but if you've tried all of that, it might be a bit more serious. One other thing you could do is unplug each injector 1 at a time, if the motor dies, it is not that, if it idles the same, theres your problem.
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Old 08-01-2003, 00:49   #4 (permalink)
ant@ears
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hi i will try a fuel filter as it hasent had one for a while, the midfire is midrange and you can drive through it.
the only thing i can think of is it has a pair of BD10 piper cams init and not got the vernier pulleys on it yet.
also people tell me that i should have only put 1 cam in not a pair.
but 1 person told me to do the inlet cam and someone else told me to do the exhaust cam. who do i believe
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