Visit The Dirt Forum for More Information

Author Topic:   plugs for my hauler with a compu-cam
posted August 08, 2004 08:53 AM
curently running AC R45TS plugs in my hauler: 93 g30, 350, tbi, compu-cam. I know the cam is the problem. It runs great as long as it doesnt idle for any length of time, or it fuel fouls the plugs. It runs like a bear towing down the highway at 65-70.. other than the plugs fouling out its great.. I end up changing them after about 400-500 miles. is there a plug that will do a better job of not fouling at idle?? Can I simply put in a hotter plug? If so any part numbers??
Thanks; widebody

rico 08
posted August 09, 2004 12:01 PM
The plugs are not the problem,the R45ts is a really hot plug.Is the cam made for fuel injection?

posted August 09, 2004 01:21 PM
Tbi engines are really sensitive to vacuum changes. In fact, most of the entire fuel meter mapping is based on the BPS. Do you know how much vacuum the cam will pull? Anything less than 17 inches will start to affect the system. Double check you have a clean O2 sensor and check for TPS intial voltage. Does the service engine soon ever light up?

posted August 09, 2004 09:43 PM
no codes or engine light. vacuum is not 17 its more like 13-14.. like i stated early It is a compu-cam. its not an RV-torquer or truck cam. its a crane compu-cam ! I fully under stand its a fuel map issue..

Ill check the o2 sensor but its fairly new. It runs fine untill it idles for a while, like getting in and out of the pits, or rolling through town. Running down the road its fine with good plugs. I might just have to **** it up and get a chip for it. the problem is its got a 4l80E tranny in it and they want a fortune for the chip!
Some ricer guys have told me to try some platinum plugs, I guess they clean off a bit better. And I might try tightening the gap up a bit.. Ill also check my tps voltage. What am I lloking for for a good voltage...
Thanks for the help guys.

posted August 10, 2004 02:19 AM
I have a 91 silverado with the big compu cam from crane i think it was like 480 lift and mine does the same with the ac plugs. I ran the boush planums and they are a bettre plug with that cam. Also just to let you know I have the hyper tech chip and all and it still does it. IT will idle fun then start loping and then burn real rich. I dont no if there is a fix is kinda like the compter wants to correct the lopey cam by riching up the fuel. BUt it hauls **** when you mash it Lol

posted August 10, 2004 04:25 PM
Bosh platinum plugs it is!!

thanks again...

Back to the Archives