Need help ASAP!! Tonight! Must get truck running! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

jorgensensc · 04-12-2007, 10:03 PM

Please help me! I have to have the truck running by 6:30 A.M., But I have to stop working on it within 1 hour (I have neighbors)
Bought a crappy j-yard dizzy that makes noise, but runs. Bought a new Procomp from ebay (at board suggestion) to remedy noise. Got the truck and dizzy dialed in, but the truck won't stay running!! I can get it to start and keep my foot on the gas and it will run, but the minute I let off it dies. If I turn the dizzy counterclockwise it won't start(sounds choppy and won't kick over) if I turn it clockwise it won't kick over (sounds like it wants to but won't. Right in between those two spots it will run as long as I have my foot on the gas and don't let off. Please help! Any suggestions would be appreciated!
SHawn

brak · 04-12-2007, 10:05 PM

First thing i would check, is to make sure it isn't 180 out.

it seems, no matter how careful i am i always end up backwards...

panhandler62 · 04-12-2007, 10:06 PM

Make sure all of your connections are clean and tight and the vacuum signal is correct.

Longhorn Man · 04-12-2007, 10:08 PM

double check the firing order... #7 and #5 are real easy to cross, and it'll still run wired as so.

msgross · 04-12-2007, 10:09 PM

did you run a "new" 12 volt switched wire to the HEI dizzy? i assume that you put HEI in if it's a new procomp? If you used the original points dizzy hot wire then it's a wire that only puts out 6 volts. Bypass it all together (cap it off) and run a new ignition hot 12 volt wire.

RACINJASON22 · 04-12-2007, 10:40 PM

All real good sugestions 18436572 and if it sounds good just not staying running just try and bump the idel up alittle till you can put a timing light on it. VERY small movements can change alot on timing so just a small amount will sometimes get ya there with out a timing light. OLD SCHOOL tighten down the dizzy so you can move it real hard by hand but not move when running and take a ride. Adjust every so often so it runs good on the road test.

jorgensensc · 04-12-2007, 11:08 PM

Found It!!! It was a vacuum leak. The vacuum port on the back of the carb was leaking. The plug cracked and fell off and I didn't see it. I don't have a brake booster so It was plugged. Thanks for the help! Especially thanks to 67rs/ss for the phone support! You nailed it! Thanks for being persistent in making me look for the vacuum leak! Thanks for everything everyone!
Shawn

GREASEMONKEY72 · 04-13-2007, 12:04 AM

nice to hear you found it, i hate when its those little things that you forget about or overlook

Spray-Bomb · 04-13-2007, 09:39 AM

Quote:

Originally Posted by GREASEMONKEY72

nice to hear you found it, i hate when its those little things that you forget about or overlook

But it really bites when it's something major

Longhorn Man · 04-13-2007, 03:58 PM

Over looking the obviouse can bite you in the rear pretty majorly, and it's happened to me more than once... that's why i normally look to what was worked on last, along with a general looking over before jumping into something big.

04-12-2007, 10:03 PM	#1
jorgensensc Registered User Join Date: Jul 2003 Location: Cypress, Tx Posts: 4,005	Need help ASAP!! Tonight! Must get truck running! Please help me! I have to have the truck running by 6:30 A.M., But I have to stop working on it within 1 hour (I have neighbors) Bought a crappy j-yard dizzy that makes noise, but runs. Bought a new Procomp from ebay (at board suggestion) to remedy noise. Got the truck and dizzy dialed in, but the truck won't stay running!! I can get it to start and keep my foot on the gas and it will run, but the minute I let off it dies. If I turn the dizzy counterclockwise it won't start(sounds choppy and won't kick over) if I turn it clockwise it won't kick over (sounds like it wants to but won't. Right in between those two spots it will run as long as I have my foot on the gas and don't let off. Please help! Any suggestions would be appreciated! SHawn __________________ 1972 C20 Suburban- Big Blue Betty '56 Chevy Bel Air Sedan- Frame up Restoration -What would you attempt to achieve if you knew you could not fail?- -I Refuse To Tiptoe Through Life, Only To Arrive Safely At Death's Door- R.I.P. EAST SIDE LOW LIFE

04-12-2007, 10:05 PM	#2
brak Registered User Join Date: Apr 2006 Location: MinneSNOWta Posts: 1,381	Re: Need help ASAP!! Tonight! Must get truck running! First thing i would check, is to make sure it isn't 180 out. it seems, no matter how careful i am i always end up backwards... __________________ 2003 GMC Sierra 1500 WT 1995 Nissan Hardbody 2016 Hyundai Veloster Turbo DC2 (SW/AW) Clyde W. Harvey USN "Socialism is a philosophy of failure, the creed of ignorance, and the gospel of envy, its inherent virtue is the equal sharing of misery" Winston Churchill

04-12-2007, 10:06 PM	#3
panhandler62 Java Mechanic Join Date: Jun 2005 Location: Martinsburg, WV Posts: 6,764	Re: Need help ASAP!! Tonight! Must get truck running! Make sure all of your connections are clean and tight and the vacuum signal is correct. __________________ Keith 11 Lincoln MKT -- Momma's wagon 13 G37xS -- middle age crazy car 68 C20 Fleetside -- RIP Decorating the whole town up at a cost of $27 ....

04-12-2007, 10:08 PM	#4
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: Need help ASAP!! Tonight! Must get truck running! double check the firing order... #7 and #5 are real easy to cross, and it'll still run wired as so.

04-12-2007, 10:40 PM	#6
RACINJASON22 GEARHEAD Join Date: Jan 2007 Location: CENTRAL,PA Posts: 2,284	Re: Need help ASAP!! Tonight! Must get truck running! All real good sugestions 18436572 and if it sounds good just not staying running just try and bump the idel up alittle till you can put a timing light on it. VERY small movements can change alot on timing so just a small amount will sometimes get ya there with out a timing light. OLD SCHOOL tighten down the dizzy so you can move it real hard by hand but not move when running and take a ride. Adjust every so often so it runs good on the road test. __________________ 72 SWB 2WD MY PROJECT 72 LWB 4X4 FUTURE PROJECT SUBSCRIBE HEREBOARD VENDORS HERE NORWOOD MEET SURVIVOR!

04-12-2007, 10:09 PM	#5
msgross Registered User Join Date: Jul 2006 Location: Central PA Posts: 12,201	Re: Need help ASAP!! Tonight! Must get truck running! did you run a "new" 12 volt switched wire to the HEI dizzy? i assume that you put HEI in if it's a new procomp? If you used the original points dizzy hot wire then it's a wire that only puts out 6 volts. Bypass it all together (cap it off) and run a new ignition hot 12 volt wire. __________________ The Garage: 1968 K-10 SWB - "Project Money Pit" 1996 Z-71 - "huntin rig" 1969 C-10 LWB (SOLD) "Project flip that truck or else" 1993 Passport, F@rd 1-ton (SOLD)"Project Cousin Eddie" My Garage Build "The 1,000 footer"

04-12-2007, 11:08 PM	#7
jorgensensc Registered User Join Date: Jul 2003 Location: Cypress, Tx Posts: 4,005	Re: Need help ASAP!! Tonight! Must get truck running! Found It!!! It was a vacuum leak. The vacuum port on the back of the carb was leaking. The plug cracked and fell off and I didn't see it. I don't have a brake booster so It was plugged. Thanks for the help! Especially thanks to 67rs/ss for the phone support! You nailed it! Thanks for being persistent in making me look for the vacuum leak! Thanks for everything everyone! Shawn __________________ 1972 C20 Suburban- Big Blue Betty '56 Chevy Bel Air Sedan- Frame up Restoration -What would you attempt to achieve if you knew you could not fail?- -I Refuse To Tiptoe Through Life, Only To Arrive Safely At Death's Door- R.I.P. EAST SIDE LOW LIFE

04-13-2007, 12:04 AM	#8
GREASEMONKEY72 Registered User Join Date: Aug 2006 Location: Bakersfield,CA Posts: 7,893	Re: Need help ASAP!! Tonight! Must get truck running! nice to hear you found it, i hate when its those little things that you forget about or overlook __________________ -steven Alte Seele S.S. "Allison" '72 C/10 LWB 350SB/TH350 - DD PITBULL IS NOT A CRIME

04-13-2007, 03:58 PM	#10
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: Need help ASAP!! Tonight! Must get truck running! Over looking the obviouse can bite you in the rear pretty majorly, and it's happened to me more than once... that's why i normally look to what was worked on last, along with a general looking over before jumping into something big.



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