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Old 11-18-2002, 05:21 PM
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Post fouled plugs on cold start

i have a chevy 350 using ac r44tx plugs. on cold mornings the plugs foul out and got a hard restart problem. anyone have a suggestion on a better plug to use? or any other likely cause of this?

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Old 11-18-2002, 05:32 PM
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DO THE BURN UP OR DO THEY GET OIL ON THEM?NEED MORE INFO DOES IT DO THIS IN THE SUMMER TO?
MAYBE THE PLUGS ARE OLD? I HAD MY PLUGS FOUL OUT BECAUSE I WAS WORKING ON MY MOTOR AND STARTED IT ABOUT 100 TIMES AND THEY FOULED OUT. TELL A LITTLE MORE ABOUT PROBLEM
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Old 11-18-2002, 05:43 PM
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the plugs are gas fouled. they are 2 months old with about 20 starts installed first in sept when warm. the engine started easy then now it turned cold and wont start
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Old 11-18-2002, 06:04 PM
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MY 350 DOESNT START WORTH A DAM IN WINTER EITHER IF ITS REALLY COLD LIKE THIS MORNING IT WOULDNT START FOR A FEW MINUTES THEN IT FINALLY DID.DONT KNOW WHAT YOURE PROBLEM COULD BE MAYBE FLOODING OUT OR HAS LEAKING RINGS TO LET GAS SEEP DOWN AFTER ENGINE SETS? I HAVE A PROBLEM WITH MY DIS CAP INTERIOR ELCTRODES GETTING CARBON OR SOMETHING BUILDING UP ON THEM AND THUS I HAVE TO SCRAPE THE BUILD UP OFF TO START THE CAR EVER HEARD ABOUT THIS HAPPENING? AND I HAVE HEI.
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Old 11-18-2002, 10:47 PM
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The condition you discribe is one i`ve seen before, I`m not sure if your running a carb or not, but something similiar happened to me. On a cold morning where the temp is around the 30`s, high volicity moving through the carb would cause the moisture in the air to freeze to the butterflies, then the carb would have no choice but to pull fuel from both idle and the transfer slot and end result was dumping fuel in the engine. the solution to this problem is to run a fuel additive with synthetic upper cylender lubricant which won`t allow the ice to stick. keep in mind, a stuck choke can cause this same problem, if your not running a carb, i`m not much help on a fuel injection related problem like this. I run a Q-jet carb and no choke, and in the winter I have to run a fuel additive, because I have the heat riser passages under the carb pad blocked off, so it takes heat longer to get there to combat this problem.
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Old 11-18-2002, 10:53 PM
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Try the fuel additive called Heet. helps prevent icing. Dan
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Old 11-19-2002, 04:28 AM
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I had gas fouling problems on my 400. Tryed everything; timing, fuel, etc. An MSD 6A fixed it. Stock ignitions on a modified engine just dont cut it sometimes. Another thing is you could try one heat range up in plugs. It will help keep the plugs clean.

Chris
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Old 11-19-2002, 06:58 AM
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I just dealt with same problem. I was aparrently gas fouling the plugs on restartes with the accelerator pump.The problem was with 75 350 truck with Rochester carb.The choke spring was not closing the butterfly enough to richen mixture so truck would not run cold. Replaced choke spring and cured problem.

[ November 19, 2002: Message edited by: tms ]</p>
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