strange pinging noise

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Mar 9, 2003 | 10:35 PM

fishmanndotcom

Thread Starter

Lead Driver

Joined: May 2000

Posts: 9,236

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From: Senoia, GA

strange pinging noise

I have a pinging noise whenever I get on the gas a lil bit, I am hoping that it isn't anything too bad, but what could be causing this noise?
-Jason-

Mar 10, 2003 | 07:52 PM

fishmanndotcom

Thread Starter

Lead Driver

Joined: May 2000

Posts: 9,236

Likes: 12

From: Senoia, GA

strange pinging noise

alright fella's, c'mon now help me out. I have been pitilin' with it all day and it is more of a rattle. It only does it when under a load. . .pulling away from a stop sign or coming out of the driveway. It won't rattle in neutral or park. I am thinking it is the torque converter because the tranny fluid is full and very clean.
-Jason-

Mar 10, 2003 | 08:12 PM

desperado_18_2000

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Joined: Jan 2001

Posts: 2,357

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From: S. Mississippi

strange pinging noise

Have you disconnected the vacuum advance, and plugged off the port on the carb, and the line from the dizzy?

Its possible that could be the problem, it was on my rig...it runs fine without it.

Then again, you may not have enough timing, or it could be running a touch lean. I doubt these though. But it is worth checking.

The only torque converter noise i've ever heard isn't a rattle, its more of a clacking sound, but then again. This was a worn out aod.

Last edited by desperado_18_2000; Mar 10, 2003 at 08:16 PM.

Mar 10, 2003 | 11:58 PM

Superdave

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Joined: Sep 1999

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From: Indiana

strange pinging noise

fishmanndotcom, It probably just good ole spark knock. But too much of it for too long of a period is not a good thing.

It can be caused by the timing being advanced to much, lean carburetor, EGR valve not working or its vacuum source un-plugged. There are a few other things that could cause it but these are the most common ones.

Does the Edelbrock carb still have its stock calibrations?

Check your base timing with a light and see what it is. This is when you plug your vacuum advance hose and drop the rpm's enough to where the centifugal advance is not coming in either. Then let it idle and check the timing with a light. Should be around 12 degree's BTDC. Do you have a stock timing chain in it still?

Don't un-plug your vacuum advance on your distrubutor. As this advances your timing as your rpm's increase, giving you better performance and fuel economy.

Last edited by Superdave; Mar 11, 2003 at 12:11 AM.

Mar 13, 2003 | 10:23 AM

fishmanndotcom

Thread Starter

Lead Driver

Joined: May 2000

Posts: 9,236

Likes: 12

From: Senoia, GA

strange pinging noise

Well I haven't messed with the flost levels so that is factory calibrated, but I had to adjust the air/fuel mix screws. It does still have the factory timing chain on it. I am thinking that the timing is advanced too much, but I will have to check it out later. I will post another reply tonight (11:27am Est time) about midnight. Thanx for all the help; keep'em coming.
-Jason-

Mar 13, 2003 | 02:11 PM

dpoelstra

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Joined: May 2002

Posts: 484

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From: Garden Grove USA

strange pinging noise

It is important to understand too, that the Edelbrock comes with the leanest metering rods they make. I had to step mine up to richen the mixture. This can not be done by the mixture screws. This is only for the idle mixture.