My V6 GT (ignition problem)

[fly4spd]

I installed a new carb, shortly after (i don't think it has anything to do with the carb, i had a guy who builds race engines install it for me) the car started running really poorly, we took the temperatures of the header primarys and the #2 and #3 cylinders were running really cold compared to the other cylinders. there isn't any noises coming from the engine, so i'm pretty sure that the engine components aren't broken. but we also tested the spark strength and it has a really poor spark off the coil. The coil is a year and a half old flamethrower 45,000 volt coil, the roter and cap were installed in september, and I have ford racing wires, recently tested them at 1000 ohms/foot. Could the ignition module have gone bad or what else could it be,(plugs are new also, but probally fouled from not firing). If it is the ignition module, i would like to go MSD, which module from them works with our cars, also i would prefer if it had a 6k rev limiter.
Thanks, and any feedback is appreciated.
-aj

 

[Mustang5L5]

Wait a second? WHat engine is this? Your sig says an '83 GT but with a V6 engine? GT's only come with 302's.

I ask because i was going to post my opinion on what to try out til i say you said it was a V6. I never played with any of the carb V6 stangs

 

[fly4spd]

it is a 302, but like i said above it has 2 cylinders that are dead, therefore only 6 are working, thus V6

 

[HISSIN50]

are you sure you have poor spark to those two cylinders (but all others are fine??)? correct firing order being used?


good luck.

 

[fly4spd]

the spark coming from the coil to the distributer is the spark that is really weak, i don'tknow if the bad cylinders are getting spark at all.

 

[mr_woodster]

the spark coming from the coil to the distributer is the spark that is really weak, i don'tknow if the bad cylinders are getting spark at all.

Well you can pull the plug wires of the ones that dont seem to fire, one at a time with plug wire pliers (while running) hold the boot close to the bock and see if it arc's. If you think its the coil...replace it!

 

[fly4spd]

well... now it seems to start out with the dead cylinder, at least it feels like it did when the cylinder was dead, then i rev it up a couple of times and the car works just fine, pulls hard and smooth, has a smooth idile. but the start up still signifies that something is wrong. what could it be?
-aj

 

[deftsound]

yea id check the spark plug wires to make sure there in the correct order on the distributor, for some reason on my car the spark plug wire order is different then what it is supposed to be, just play around with it a little till it sounds right

 

[manpowermustang]

That good V8 minus 2 = V6

lol