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Misfire in 93 z28

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Old Mar 4, 2011 | 06:46 PM
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Default Misfire in 93 z28
So im having what i think is a misfire in my lt1. So far i have replaced fuel filter, plugs, wires, thermostat, and waterpump. My waterpump went bad not to long ago so im guessing my optispark is probably going bad. MY symptoms of the misfire is under a heavy load at low rpm the car will basically fall on its face. If anyone has any suggestions of what the problem is please let me know.
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Old Mar 4, 2011 | 06:52 PM
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Any codes
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Old Mar 5, 2011 | 12:12 AM
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no sir i wish it would throw one. i threw a egr code a little while back
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Old Mar 5, 2011 | 02:59 AM
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Checked for vacuum leaks?
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Old Mar 5, 2011 | 06:44 AM
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Did the miss go away at all when you did the plugs and wires
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Old Mar 6, 2011 | 05:58 PM
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Yah I checked for vacuum leaks and no after the plugs and wires it still did the same thing
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Old Mar 7, 2011 | 12:12 AM
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mines doing the same thing, hooked a mac mentor to it all signs are pointing to the opti at this point
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Old Mar 8, 2011 | 09:24 AM
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Does any one else have any ideas before I go ahead and buy an opti
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Old Mar 8, 2011 | 03:57 PM
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Injectors try seafoaming the car
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