Truck wont start! HELP! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

r0lf- · 06-23-2003, 06:57 PM

Ok, I changed my cap and I was starting to change my wires but the POS's dont wanna work with me so I am gonna return them and get some premade ones. Anyhow, I put EVERYTHING back to normal and now the POS is backfiring through the carb.

Its HEI ignition and I have the #1 cylinder on the first left prong to the left of the part that sticks out of the HEI. Isnt that where its sopposed to go? can anybody help me? I can get this sucker to start and I cant have it down. Its my daily driver. Ive never had this bad of luck trying to do a simple tune up!@ ARGGG!!!

*rage'nrat638* · 06-23-2003, 07:21 PM

sounds like you got the wires crossed
1-8-4-3-6-5-7-2 fireing order
rotor turns clockwise
start at #1 first plug on drivers side
#2 first plug on pass. side

MSL · 06-23-2003, 07:22 PM

Ok number one on the cap is in the front driverside. it sounds like you have it wired up wrong. from clockwise the firing order on the cap is 18436572
driverside head 1357 passenger side 2468.

Hope this helps you out.

r0lf- · 06-23-2003, 07:33 PM

Nope, everything is wired the way it should be. I dont know what the hell is wrong and its really starting to make me mad.

I put everything back to the way it was and its still backfiring. I didnt mess with timing one bit.

MSL · 06-23-2003, 07:38 PM

you have a new cap and rotor. check and make sure the little button in the cap isnt messed up.

r0lf- · 06-23-2003, 07:49 PM

checked that. I even tried putting the old cap back on. Nothing, still backfires. Do you think my main unit in the dist. could have gone out? It was lookin kinda sad.

*rage'nrat638* · 06-23-2003, 07:57 PM

if you changed the coil,,in the cap..start there...take it back off and make sure the terminals are not bent or crossed...
its got to be something that you worked on ..
wish i were there to help....

MSL · 06-23-2003, 08:06 PM

Ya i would have to agree check over the coil and make sure all the stuff is in the right place make sure wires arent cut crossed. also make sure the cap is set flush on the dist i have been in a hurry sometimes and did that.

*1FaastC10* · 06-23-2003, 09:54 PM

you say you're positive its not the wire routing, just for kicks and giggles, take them off, and run them again. i've crossed them up more than once, even when i was positive that they were right. its very easy to do, and i bet that 95% of us that have changed plug wires have done it at least twice.

**old Rusty C10** · 06-23-2003, 10:48 PM

yeah go over the wiring one more time by taking em all off and then resetting them then look at the coil if itstill dont fire up

TIMSPEED · 06-24-2003, 12:32 AM

When it backfires through the carb, that means the ignition is 180º off. Take out the distributor and flip it around. Or, if it was running prior to the wire swap, just flip the wires around.

06-23-2003, 07:33 PM	#4
r0lf- Hotwheels? Join Date: Dec 2002 Location: Pleasant Hill, CA Posts: 1,145	Nope, everything is wired the way it should be. I dont know what the hell is wrong and its really starting to make me mad. I put everything back to the way it was and its still backfiring. I didnt mess with timing one bit. __________________ 1978 Money Pit - CUSTOM DELUXE!!!!

06-23-2003, 07:49 PM	#6
r0lf- Hotwheels? Join Date: Dec 2002 Location: Pleasant Hill, CA Posts: 1,145	checked that. I even tried putting the old cap back on. Nothing, still backfires. Do you think my main unit in the dist. could have gone out? It was lookin kinda sad. __________________ 1978 Money Pit - CUSTOM DELUXE!!!!

06-23-2003, 10:48 PM	#10
old Rusty C10 Robert Olson Transport Join Date: Oct 2002 Location: recent transplant to NC USA Posts: 20,310	yeah go over the wiring one more time by taking em all off and then resetting them then look at the coil if itstill dont fire up __________________ 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!!

06-24-2003, 12:32 AM	#11
TIMSPEED Join Date: Jan 2003 Location: Modesto, CA Posts: 1,321	When it backfires through the carb, that means the ignition is 180º off. Take out the distributor and flip it around. Or, if it was running prior to the wire swap, just flip the wires around. __________________ I have a few cars... See Them Here

06-23-2003, 06:57 PM	#1
r0lf- Hotwheels? Join Date: Dec 2002 Location: Pleasant Hill, CA Posts: 1,145	Truck wont start! HELP! Ok, I changed my cap and I was starting to change my wires but the POS's dont wanna work with me so I am gonna return them and get some premade ones. Anyhow, I put EVERYTHING back to normal and now the POS is backfiring through the carb. Its HEI ignition and I have the #1 cylinder on the first left prong to the left of the part that sticks out of the HEI. Isnt that where its sopposed to go? can anybody help me? I can get this sucker to start and I cant have it down. Its my daily driver. Ive never had this bad of luck trying to do a simple tune up!@ ARGGG!!! __________________ 1978 Money Pit - CUSTOM DELUXE!!!!

06-23-2003, 07:21 PM	#2
rage'nrat638 Account Suspended Join Date: Mar 2003 Location: THE FALL GUY CHICAGO IL Posts: 5,883	sounds like you got the wires crossed 1-8-4-3-6-5-7-2 fireing order rotor turns clockwise start at #1 first plug on drivers side #2 first plug on pass. side

06-23-2003, 07:22 PM	#3
MSL Registered User Join Date: Mar 2003 Location: So.Oregon Posts: 765	Ok number one on the cap is in the front driverside. it sounds like you have it wired up wrong. from clockwise the firing order on the cap is 18436572 driverside head 1357 passenger side 2468. Hope this helps you out.

06-23-2003, 07:38 PM	#5
MSL Registered User Join Date: Mar 2003 Location: So.Oregon Posts: 765	you have a new cap and rotor. check and make sure the little button in the cap isnt messed up.

06-23-2003, 07:57 PM	#7
rage'nrat638 Account Suspended Join Date: Mar 2003 Location: THE FALL GUY CHICAGO IL Posts: 5,883	if you changed the coil,,in the cap..start there...take it back off and make sure the terminals are not bent or crossed... its got to be something that you worked on .. wish i were there to help....

06-23-2003, 08:06 PM	#8
MSL Registered User Join Date: Mar 2003 Location: So.Oregon Posts: 765	Ya i would have to agree check over the coil and make sure all the stuff is in the right place make sure wires arent cut crossed. also make sure the cap is set flush on the dist i have been in a hurry sometimes and did that.

06-23-2003, 09:54 PM	#9
1FaastC10 Account Suspended Join Date: Oct 2002 Location: Elkhart, IN Posts: 6,399	you say you're positive its not the wire routing, just for kicks and giggles, take them off, and run them again. i've crossed them up more than once, even when i was positive that they were right. its very easy to do, and i bet that 95% of us that have changed plug wires have done it at least twice.



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