LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

I need reasons for this...

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Old 08-12-2004, 03:33 PM
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I need reasons for this...

I need all the reasons for a misfire. could it be opti? wires? plugs? anything else? leme know...
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Old 08-12-2004, 03:43 PM
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Re: I need reasons for this...

Originally Posted by jpizzzle
I need all the reasons for a misfire. could it be opti? wires? plugs? anything else? leme know...
yes to all.

when does the misfire happen?
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Old 08-12-2004, 03:54 PM
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Re: I need reasons for this...

this happens when im at about 1/4 throttle in any gear besides first basically. or at low RPM's.
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Old 08-12-2004, 05:43 PM
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Re: I need reasons for this...

bad/plugged EGR valve or manifold passage can cause that as well.
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Old 08-12-2004, 05:44 PM
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Re: I need reasons for this...

check for arching
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Old 08-13-2004, 12:32 PM
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Re: I need reasons for this...

please explain arching to me...
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Old 08-13-2004, 12:52 PM
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Re: I need reasons for this...

park car in like a dark garage and look to see if you see electricity/(arching) coming from your plugs or wires or coil -

im having similar problem now and brought car into garage to see that 2 plug wires have cracks and are arching against the block causing misfire. i have new wires just waiting for chance to put on
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