66 chevy truck. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

joe1966 · 05-30-2012, 02:35 PM

I have been workin on my truck for a while and me and my uncle tested the coil inside my HEI distributor and it was bad . so i went down and bought a new one and i still have no spark. it does not fire at all. and i have no clue what else it could be everything is all new. i am very confused why there is no spark.

jchav62 · 05-30-2012, 03:11 PM

Did you test the power to the "+" wire at the coil? I see you changed the coil, did you change the module inside the cap?

Good luck...JC62...

joe1966 · 05-30-2012, 03:22 PM

ive checked all of it and its all good i just put a new module inside it not even a month a ago.. so baffled on all of this. i was driving it one day and it ran great then drained the gas out of it and it sat over night the next morning i put gas in it sno there was nothing.

1963c-10 · 05-30-2012, 03:22 PM

Is it turning over and catching or just turning over?

joe1966 · 05-30-2012, 03:30 PM

its just straight up turning over haha. ineres nothing just normal turning.

tincan1966 · 05-30-2012, 05:41 PM

it is relatively common for the rotor to wear and burn thru under the center contact-and it will ground out to the shaft. Look at the center of the rotor to see if it looks burnt. You may or maynot actually see a crack, but replacing it is an easy test.

joe1966 · 05-30-2012, 06:00 PM

so if it looks burnt or cracked just to buy a new rotor? i just put this one in like a month ago it is msd. but i will check here in a sec if its good or not

tincan1966 · 05-30-2012, 06:22 PM

Would be unlikely that it would be burnt in only a month of use, maybe I missed you mentioning you had already replaced it. Sorry.

Wrenchbender Ret · 05-30-2012, 06:33 PM

Did you replace or check the pickup coil. It turns with the vacuum advance the wires in it can break inside the insulation causeing intermittant failure. Hook an ohm meter or continuity tester to the wires going to it after you unplug them from the module. Move the wires around. You should have continuity between the terms.

iplaybass · 05-30-2012, 06:37 PM

did you change the hallafac switch under the Distributor? or do you still have points?

joe1966 · 05-31-2012, 11:55 PM

I chenged the coil inside the HEI distributor and i dont have points. i jsut replaced the module and i still have nothing ant the rotor is brand new. but i took out the distributor and marked it so i didnt forget wich way it goes and i took it all aprat and cleaned it and it fired but was just popping and making weird noises like it is out time. .i am just going to put a new distributor in it. instead of messing with it all. im int he process of sanding and painting and dont wanna mess with motor stuff til later and im puttin a new engine in it anyways. this motor is just temporary

05-30-2012, 02:35 PM	#1
joe1966 Registered User Join Date: Dec 2011 Location: chico california Posts: 68	66 chevy truck. I have been workin on my truck for a while and me and my uncle tested the coil inside my HEI distributor and it was bad . so i went down and bought a new one and i still have no spark. it does not fire at all. and i have no clue what else it could be everything is all new. i am very confused why there is no spark.

05-30-2012, 03:11 PM	#2
jchav62 1962 C-10 Join Date: Apr 2005 Location: Las Vegas, New Mexico Posts: 4,978	Re: 66 chevy truck. Did you test the power to the "+" wire at the coil? I see you changed the coil, did you change the module inside the cap? Good luck...JC62... __________________ Joseph Chavez "See the USA in a Chevrolet!!" ......................_____ .........________//__{\_____ ,,,,,,,/__(O)___//___/__(O)_/ 1962 C10 Shortbed Fleetside 327/th350 GV overdrive 1974 C10 Longbed Fleetside 350/th350 "The Trash Truck" 1999 Chevy 2500 OBS, Longbed 5.7/4L80E 4x4 2015 GMC Sierra SLE 1500 4x4

05-30-2012, 03:22 PM	#3
joe1966 Registered User Join Date: Dec 2011 Location: chico california Posts: 68	Re: 66 chevy truck. ive checked all of it and its all good i just put a new module inside it not even a month a ago.. so baffled on all of this. i was driving it one day and it ran great then drained the gas out of it and it sat over night the next morning i put gas in it sno there was nothing.

05-30-2012, 03:22 PM	#4
1963c-10 Registered User Join Date: Nov 2011 Location: fayetteville nc Posts: 10,338	Re: 66 chevy truck. Is it turning over and catching or just turning over? __________________ 1963 Short bed step side SBW 427 big block and borg warner T-16 HD 3 speed manual http://67-72chevytrucks.com/vboard/s...d.php?t=519869 1963 Short bed fleetside BBW 348 1st gen big block w/Powerglide http://67-72chevytrucks.com/vboard/s...d.php?t=619024 1964 Short bed trailer

05-30-2012, 03:30 PM	#5
joe1966 Registered User Join Date: Dec 2011 Location: chico california Posts: 68	Re: 66 chevy truck. its just straight up turning over haha. ineres nothing just normal turning.

05-30-2012, 05:41 PM	#6
tincan1966 Registered User Join Date: Oct 2010 Location: Independence,KS Posts: 1,477	Re: 66 chevy truck. it is relatively common for the rotor to wear and burn thru under the center contact-and it will ground out to the shaft. Look at the center of the rotor to see if it looks burnt. You may or maynot actually see a crack, but replacing it is an easy test.

05-30-2012, 06:00 PM	#7
joe1966 Registered User Join Date: Dec 2011 Location: chico california Posts: 68	Re: 66 chevy truck. so if it looks burnt or cracked just to buy a new rotor? i just put this one in like a month ago it is msd. but i will check here in a sec if its good or not

05-30-2012, 06:22 PM	#8
tincan1966 Registered User Join Date: Oct 2010 Location: Independence,KS Posts: 1,477	Re: 66 chevy truck. Would be unlikely that it would be burnt in only a month of use, maybe I missed you mentioning you had already replaced it. Sorry.

05-30-2012, 06:33 PM	#9
Wrenchbender Ret Registered User Join Date: Oct 2005 Location: Overland Park, Ks. Posts: 5,229	Re: 66 chevy truck. Did you replace or check the pickup coil. It turns with the vacuum advance the wires in it can break inside the insulation causeing intermittant failure. Hook an ohm meter or continuity tester to the wires going to it after you unplug them from the module. Move the wires around. You should have continuity between the terms.

05-30-2012, 06:37 PM	#10
iplaybass Registered User Join Date: May 2012 Location: bay st louis ms Posts: 4	Re: 66 chevy truck. did you change the hallafac switch under the Distributor? or do you still have points?

05-31-2012, 11:55 PM	#11
joe1966 Registered User Join Date: Dec 2011 Location: chico california Posts: 68	Re: 66 chevy truck. I chenged the coil inside the HEI distributor and i dont have points. i jsut replaced the module and i still have nothing ant the rotor is brand new. but i took out the distributor and marked it so i didnt forget wich way it goes and i took it all aprat and cleaned it and it fired but was just popping and making weird noises like it is out time. .i am just going to put a new distributor in it. instead of messing with it all. im int he process of sanding and painting and dont wanna mess with motor stuff til later and im puttin a new engine in it anyways. this motor is just temporary



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