Popping Noises

Reply Subscribe

Thread Tools

Search this Thread

Nov 30, 2011 | 02:28 PM

elopez1986

Thread Starter

Instructor

Joined: Nov 2011

Posts: 114

Likes: 0

From: Los Angeles CA

Popping Noises

I have a 2002 Corvette with long tube headers, x pipe, axle back, hi flow cats, and cold air intake. I recently dyno tune the car and was told that it cant be fully tune because the of some random misfires. I am expiriencing popping noises when accelarating quickly and at high RPM. The popping noise makes the car slugish and rough to ride. About a year ago I changed the spark plugs into NGK TR55 and granatelli wires with boots. My tuner tells me that the mechanical problems can be due to bad spark plugs, blaster coils, or ignition module. Does this sound correct? Help me. Thank you very much!!!

Nov 30, 2011 | 02:55 PM

Chicago1

Race Director

Joined: Mar 2008

Posts: 12,413

Likes: 501

From: Rio Rancho NM

Pull the codes and it sounds like you need a better tuner.

Nov 30, 2011 | 02:58 PM

elopez1986

Thread Starter

Instructor

Joined: Nov 2011

Posts: 114

Likes: 0

From: Los Angeles CA

Pull the codes? I had P0300 and P0153.
My tuner eliminated those codes.

Dec 1, 2011 | 11:42 AM

m6 c5

Melting Slicks

Joined: Jun 2010

Posts: 2,809

Likes: 3

From: Yorktown Virginia

Quote:

Originally Posted by elopez1986

Pull the codes? I had P0300 and P0153.
My tuner eliminated those codes.

I can see why he may have turned p0153 off but as long as you have your rear sensors in that place they should be fine but I see no reason at all why the p0300 code was turned off as that detects misfire and you should get a flashing CEL when that happens.
Did you pull the codes via the DIC?

Dec 1, 2011 | 11:53 AM

elopez1986

Thread Starter

Instructor

Joined: Nov 2011

Posts: 114

Likes: 0

From: Los Angeles CA

I only have 2 oxygen sensors which are the one's before the cats (new ones too). The one's after the cats are eliminated. And yes, the codes were retrieved from the DIC.

Dec 1, 2011 | 12:12 PM

BLOWNBLUEZ06

Tech Contributor

Joined: Apr 2007

Posts: 10,924

Likes: 78

From: Forney Texas

broken valve spring, broken rocker, broken piston ring land, clogged cats, bad injector, bad spark plug, defective coil.

Those are the common causes of P0300.

Dec 1, 2011 | 12:58 PM

elopez1986

Thread Starter

Instructor

Joined: Nov 2011

Posts: 114

Likes: 0

From: Los Angeles CA

I got my valve train checked by a mechanic who removed my valve covers and etc.

The cats are magnaflow hi flow and are new with less than 2000 miles

The spark plugs are NGK TR55 that were replaced less than a year ago

This leaves only the coils and injectors right?

Dec 1, 2011 | 02:10 PM

BLOWNBLUEZ06

Tech Contributor

Joined: Apr 2007

Posts: 10,924

Likes: 78

From: Forney Texas

and a broken ring land.

Those are just the common causes that I've witnessed.
Also doesn't mean you don't have a defective plug or wire or a plug with an excessive gap

Last edited by BLOWNBLUEZ06; Dec 1, 2011 at 02:23 PM.