Spark Knock after opti swap

779 Views 5 Replies 3 Participants Last post by fastradoss, Mar 17, 2013

fastradoss

Discussion Starter · Mar 15, 2013

I had my opti go out on me on a 95 lt1. Swapped it out and went for a test drive. I am now getting spark knock that will rattle your teeth. I have a custom tune in it but didnt think that would cause this much knocking. Anyone else had this problem before?

Runs fine at idle and cruising. But hit the gas and its bad.

Save

1 - 6 of 6 Posts

ShowNoMercy

· #2 · Mar 16, 2013

Did you make sure 100% each spark plug wire goes from and to the right point?

Save

shoebox

· #3 · Mar 16, 2013

Could be you didn't index the opti correctly during install.

Save

fastradoss

Discussion Starter · #4 · Mar 16, 2013

I will check on the plug wires. And I am sure the opti is indexed correctly. I didnt think it would run/idle well at all if the opti wasnt indexed right?

Save

shoebox

· #5 · Mar 16, 2013

fastradoss said:
I will check on the plug wires. And I am sure the opti is indexed correctly. I didnt think it would run/idle well at all if the opti wasnt indexed right?

Yes, it can run/idle with the opti slightly off, but it will usually have no power.

Save

fastradoss

Discussion Starter · #6 · Mar 17, 2013

I am hoping right before the opti went out i filled up with bad gas. I will drive it down and put in some good gas. I am thinking thats the problem.

Save

1 - 6 of 6 Posts

This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.

Top Contributors this Month