C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

changed opti and wp now what?

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Old Aug 3, 2013 | 06:15 PM
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Default changed opti and wp now what?

Changed my opti and water pump on my 94 vert.. car started right up but I now have steam coming out the passenger side exhaust and the left pops a little . Checked the plug wires and they are correct.

When I installed the opti I was very careful to install it correctly.

Any ideas I really would appreciate them.
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Old Aug 4, 2013 | 11:08 AM
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What brand opti did you put on?
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Old Aug 4, 2013 | 11:21 AM
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I would start with checking the wires, it may be you mixed up a plug wire when pushing them back into the cap.

I see no reason for steam except excess moisture in the exhaust, or just spilled antifreeze on the pipes.
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Old Aug 4, 2013 | 12:11 PM
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If you changed the water pump due to an overheating condition you may have blown the head gasket, that would account for the steam and misfire.
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Old Aug 5, 2013 | 08:31 AM
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Sorry it took so long to reply, computer crashed, checked all my fittings and connections and found out that I missed hooking up one line to the throttle body, left side bottom. Car now runs better than ever. It is a petris opti. Ran out of time so I still need to hook up the vacuum connections.
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