Valve chatter or spark knock?

HorsPowr · 07-02-2004, 03:16 PM

I have real bad (what I think is ) spark knock in upper RPMS and ESPECIALLY when air conditioning is on. Any advice? Ive heard its due to carbon build-up dealing with the EGR - will replacing the EGR help?

My engine is very strong and solid but high mileage. I probably need new plugs though and a tune up anyway.

Crazy Horse GT · 07-05-2004, 09:41 PM

Quote:

Originally posted by HorsPowr
I have real bad (what I think is ) spark knock in upper RPMS and ESPECIALLY when air conditioning is on. Any advice? Ive heard its due to carbon build-up dealing with the EGR - will replacing the EGR help?

My engine is very strong and solid but high mileage. I probably need new plugs though and a tune up anyway.

yeah im getting the same thing from my 95 gt vert, but it was bought by me from a retired guy, all he did was polish the car , i have started modding it, same problem, not all the time though, guess, i'll try the old cheater trick, pour a little bit of tranny fluid in the engine. i'll let you know what happen's.

btw i did a tune up it did decrease it alot.

crazypete · 07-06-2004, 11:49 AM

What is this transmission fluid trick I'm hearing about? I'm curious now. I just drained my PS rack and forgot that I had no PS fluid and I heard ATF would work. DOES IT EVER! That ps is like a new system! I'm curious what ATF would do in the engine. I mistakenly bought 5 quarts of type F which doesnt go in my AOD so I need to give it a purpose.

LX5liter · 07-06-2004, 04:18 PM

Quote:

Originally posted by crazypete
What is this transmission fluid trick I'm hearing about? I'm curious now. I just drained my PS rack and forgot that I had no PS fluid and I heard ATF would work. DOES IT EVER! That ps is like a new system! I'm curious what ATF would do in the engine. I mistakenly bought 5 quarts of type F which doesnt go in my AOD so I need to give it a purpose.

It's supposed to clean all the grunge out of the engine and free up sticky lifters etc...it has a fairly high detergent content so it cleans the engine up from the inside. IMO, if you use a good oil and do regular oil changes you will not need to use the ATF. The new oils have enough additives in them, (unless you run them too long) , they do a pretty good job of keeping things clean.

07-02-2004, 03:16 PM	#1
HorsPowr Registered Member Join Date: Jun 2004 Location: Atlanta GA Posts: 5	Valve chatter or spark knock? I have real bad (what I think is ) spark knock in upper RPMS and ESPECIALLY when air conditioning is on. Any advice? Ive heard its due to carbon build-up dealing with the EGR - will replacing the EGR help? My engine is very strong and solid but high mileage. I probably need new plugs though and a tune up anyway.

07-06-2004, 11:49 AM	#3
crazypete Registered Member Join Date: Sep 2002 Location: Boston Posts: 592	What is this transmission fluid trick I'm hearing about? I'm curious now. I just drained my PS rack and forgot that I had no PS fluid and I heard ATF would work. DOES IT EVER! That ps is like a new system! I'm curious what ATF would do in the engine. I mistakenly bought 5 quarts of type F which doesnt go in my AOD so I need to give it a purpose. __________________ 91 GT Carb conversion, holley 600 double pumper, edelbrock performer intake, FMS "C" drop springs, march 1000 underdrive pullies, crane 1.7 roller rockers, GT-40P headers, bassani x pipe, american thunder catback, FMS 4.56's, msd aL6, trunkmount battery, A/C eliminator kit, 3000 stall tci streetfighter, AOD with transgo kit, A+ servo, 300M hardened lockup shaft, kevlar bands and 28,000 gvw trans cooler, 3 core radiator, 300 lbs stripped with a full interior

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