Need Help #5 & #7 Dead Lt4

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Feb 19, 2008 | 11:08 PM

austin8388

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Joined: May 2007

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From: Dallas Texas

Need Help #5 & #7 Dead Lt4

1996 LT4 with 46,000 miles. It's mostly stock. 5 and 7 cylinders are not firing. #5 is misfiring twice as much as #7 but both not working. I replaced opti-spark, all wires and plugs. Test lights show both 5 and 7 injectors are getting power. I swapped out good injectors in the bad cylinders but still have same issues. I guess a compression check is next. There is no smoke from the exhaust and no oil in coolant or coolant in oil. ANY IDEAS?????? Thanks in advance.

Feb 20, 2008 | 10:59 AM

bad-zr1

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From: Corunna Mi

Just a quick thought, make sure they are not swapped. 5 and 7 are the easiest to get mixed up as they are next to each other in the firing order.

Feb 20, 2008 | 01:58 PM

all4c4lt4

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From: Cincinnati Oh

Quote:

Originally Posted by bad-zr1

Just a quick thought, make sure they are not swapped. 5 and 7 are the easiest to get mixed up as they are next to each other in the firing order.

Feb 20, 2008 | 02:34 PM

96GS#007

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