Valve Clatter

**JunkBird69** · 11-20-2012

Did a tune up on the 04 plugs wires new coils , didnt get at the fuel filter looked dangerously rusty.lol. But since then under load at part throttle I have a terrible valve clatter, only mods done are open element air filter and zzp shift kit, any ideas what the problem ? Car is well maintaned with 124k on the ticker!

**Fivefingerdeathpunch** · 11-20-2012

Time for a oil change?

Maybe run some seafoam in it right before you change the oil.

**Scottydoggs** · 11-20-2012

you could have the plug wires on wrong, sometimes they run right at idle, then fall on there faces when getting on it.

even tho your N/A the fire order is the same.

**JunkBird69** · 11-21-2012

Thanks guys, the firing order is correct. Motor is clean and so is oil. Im think the fuel filter may be the issue, but damn looks like im gonna be replacing fuel lines.lol

**SlowNA06** · 11-21-2012

New coils? Did you use stock coils?

**Scottydoggs** · 11-21-2012

the filter, put a pair of vise grips on the line nut, lock it tight, then hold the line nut still, and turn the filter off the line nut with a wrench. this will keep you from spinning the line and breaking it.

**JunkBird69** · 11-23-2012

Yes stock coils directly from GM, Im gonna give it a try this weekend ill keep you guys posted!!

**blueguy** · 11-23-2012

If you've got the coils off...get the ICM tested for free at your local auto parts store.

That's a easy task as well...just to rule it out.

I'd also double check the connections at every plug/coil...sounds like you either crossed a couple or something isn't making a solid connection.

**JunkBird69** · 11-26-2012

Well I never got to the filter, but I did check all my connections and everything is good, i swapped in a new module still have the same issues!

**BillBoost37** · 11-26-2012

You are saying it sounds like valve clatter since you did this work or it existed before the work? Was an oil change done with the tune up, if so...what weight oil and brand of filter