Tech help please

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07-18-2009, 10:46 AM

pweterss

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Tech help please

Hey guys my buddy just put his 01 z28 together (head gasket) and the car is backfiring alot.any ideas?

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07-18-2009, 11:41 AM

383lt1impala

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He only did the head gaskets? Is it throwing any codes?

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07-18-2009, 11:51 AM

pweterss

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Yea,no codes were at the speedway rite now n he ran a 14.5 lol only 2 groups today!

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07-18-2009, 12:15 PM

LS1Z28

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Just the head gasket or did he do a cam swap while he was at it?

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07-18-2009, 12:26 PM

pweterss

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Stock motor just a port n polish. Maybe bad maf?

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07-18-2009, 01:24 PM

LS1Z28

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Maybe a bad plug. Had one that missfired with no codes.Had a cracked insulator.

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07-18-2009, 04:10 PM

MrElectric03

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Bad plug, loose plug wire, maybe one of the wires was damaged when pulled off.

Were the plugs all gapped before install and not dropped on installation?

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Tech help please

Tech help please

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