Rough idle

[risky]

I have a custom tune from MO'S shop and I just installed new spark plugs ngk tr6 on my marauder I gaped them at 45 just like he told me 2 and the car is shaking a lot.. I regaped them at 52 and it still has rough idel. Any ideas what could be wrong. What other spark plugs are a step colder??

[justbob]

Sounds like a bad COP connection to me, unless you dropped a couple down the wells and crushed the gap way way down.


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[fastblackmerc]

Sounds like a bad COP connection to me, unless you dropped a couple down the wells and crushed the gap way way down.


Self proclaimed Builder Of Badassery.

Buy it, Break it, Build it BETTER.
"Since 2004"

What he said...............

[risky]

The cop cennectors Only have around 10k on them. I bought them from musclemerc from a crate motor. Ill have to check the gap on the plugs again I don't remember dropping one

[justbob]

I meant the wiring for the COPS, or the connection at the plug.


Self proclaimed Builder Of Badassery.

Buy it, Break it, Build it BETTER.
"Since 2004"

[Blackened300a]

Just because they are new don't mean that one or two may have a crack in the porcelain. Also check all your coil connections are made and try going from cylinder to cylinder unplugging the injector to see if the idle gets worse or stays the same. Then you can narrow it down to what cylinder may be the issue.

[risky]

I meant the wiring for the COPS, or the connection at the plug.


Self proclaimed Builder Of Badassery.

Buy it, Break it, Build it BETTER.
"Since 2004"

I will take a look at the wiring and the connection at the plug. I have the granatelli coil on plug connectors do you think I shoud just put the regular ones on

[risky]

Thank you blackened300a. I will do that tomorrow