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Cole's 87 · 11-23-2002, 06:58 PM

Well it started again. I get my engine to around 5000rpm then it starts backfiring threw the exhaust. Talked to a local engine builder and told him Ive looked at fuel press, timming, plugs, wires you name it. He suggested ignition module so I pulled it out of the dist & took it to oriellys auto parts. Sure enough it was bad. Got a new one. Went home & put it all back together, she fired right up. It ran smoother, so I went down this little black top no one hardly goes down

. I came to a full stop and nailed it ,all hell broke loose all the popping "gone " shifted out of 1st @ 5500RPM then in 2nd around 5000RPM it went right back to doing it

. Called the guy back and he said either pickup coil or valve float. How is it that I can have valve float, when I bought the K-Kit arent the springs supposed to be matched to the cam. Acording to him it aint nothing to see a new set of springs loose 10lbs of seat pressure after breaking in a engine. Is this true.........or a line of crap

Far as the pickup coil I dont really know enough about them to argue. Im really loosing my cool here.

**old Rusty C10** · 11-23-2002, 07:27 PM

on any of the trucks which ive owned, when the pickup coil went the truck would backfire and pop and all under any load all you would have to do is to put it in drive and try to give it any gas
for whatever thats worth

SCOTI · 11-23-2002, 08:29 PM

If your running HEI, I believe they run out of spark right around 45-5000rpm or so. Try the MSD HEI intensifier kit. With this kit a Blaster 2 coil & 6AL amplifier is used instead of factory stuff. I would think this would be easier than going back into the motor & if it doesn't solve your problem it's still not a waste of time because you'll rule out the ignition(as the prob) + upgrade it @ the same time.

11-23-2002, 06:58 PM	#1
Cole's 87 Registered User Join Date: Nov 2002 Posts: 272	Well it's back...... Well it started again. I get my engine to around 5000rpm then it starts backfiring threw the exhaust. Talked to a local engine builder and told him Ive looked at fuel press, timming, plugs, wires you name it. He suggested ignition module so I pulled it out of the dist & took it to oriellys auto parts. Sure enough it was bad. Got a new one. Went home & put it all back together, she fired right up. It ran smoother, so I went down this little black top no one hardly goes down . I came to a full stop and nailed it ,all hell broke loose all the popping "gone " shifted out of 1st @ 5500RPM then in 2nd around 5000RPM it went right back to doing it . Called the guy back and he said either pickup coil or valve float. How is it that I can have valve float, when I bought the K-Kit arent the springs supposed to be matched to the cam. Acording to him it aint nothing to see a new set of springs loose 10lbs of seat pressure after breaking in a engine. Is this true.........or a line of crap Far as the pickup coil I dont really know enough about them to argue. Im really loosing my cool here. Last edited by Cole's 87; 11-23-2002 at 07:00 PM.

11-23-2002, 07:27 PM	#2
old Rusty C10 Robert Olson Transport Join Date: Oct 2002 Location: recent transplant to NC USA Posts: 20,287	pickup coil on any of the trucks which ive owned, when the pickup coil went the truck would backfire and pop and all under any load all you would have to do is to put it in drive and try to give it any gas for whatever thats worth __________________ Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!!

11-23-2002, 08:29 PM	#3
SCOTI Registered User Join Date: Apr 2001 Location: DALLAS,TX Posts: 21,963	If your running HEI, I believe they run out of spark right around 45-5000rpm or so. Try the MSD HEI intensifier kit. With this kit a Blaster 2 coil & 6AL amplifier is used instead of factory stuff. I would think this would be easier than going back into the motor & if it doesn't solve your problem it's still not a waste of time because you'll rule out the ignition(as the prob) + upgrade it @ the same time. __________________ 67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... *Cubic inches is like Indiana Jones with a cheap pistol.*



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