HELP! My truck just quit running while driving and now won't start - The 1947 - Present Chevrolet & GMC Truck Message Board Network

CecilDunn · 05-28-2016, 10:19 AM

Yesterday evening I'm driving and my truck seem to start running rough then just quit had a quick look over and tried to get it started no go pumps pumping plugs all look fine and getting spark when u turn it over I do notice a putting sound out of the exhaust any ideas out there

61K10 · 05-28-2016, 12:44 PM

need a little more info--what year tk -- what eng? how many miles on the eng?

CecilDunn · 05-28-2016, 01:03 PM

Got it started running real rough though 62 283 sounds like it's missing at certain rpm rattles n shakes should I check compression plugs didn't look bad when it quit sounded like wasn't getting gas

**LostMy65** · 05-28-2016, 04:28 PM

Timing chain may have jumped a tooth.

**LostMy65** · 05-28-2016, 04:31 PM

Is it an old points distributor, or have you upgraded to HEI?

CecilDunn · 05-28-2016, 04:46 PM

Points

CecilDunn · 05-28-2016, 06:12 PM

Compression test ran with sad results thought I would like to look under the valve covers but I am having trouble removing those to investigate further seem to be stuck on from number years of abuse guess it's just time to replace and rebuild any thoughts?

TopFuel1966 · 05-29-2016, 02:47 PM

If the motor is running rough and is puffing out of the exhaust I would venture to guess that a leakdown test would reveal worn/sticking/burnt exhaust valves in #7 and #8 cylinders at the very least. Depending on mileage it's probably time for a rebuild.

**TJ's Chevy** · 05-29-2016, 05:59 PM

Quote:

Originally Posted by CecilDunn

Compression test ran with sad results thought I would like to look under the valve covers but I am having trouble removing those to investigate further seem to be stuck on from number years of abuse guess it's just time to replace and rebuild any thoughts?

With the numbers you showing.....that motor is severely worn, or all the valves are hanging open, or the rings are broken in two cylinders. I'd pull the valve covers off and do an adjustment then recheck compression. If numbers are the same then it's time to yank the motor out and see what happened inside. Did you lose oil pressure? Engine seized?

Rodder29 · 05-29-2016, 07:35 PM

Before you yank the engine, do a little bit more troubleshooting. Squirt some oil down the spark plug holes, then do another compression test, and hold the pedal to the floor as you're cranking the engine over. If the compression ratio comes up then you know you have a problem with the rings, if not then you likely have leakage past the valves.

vince1 · 05-30-2016, 04:25 PM

7 and 8 are across from each other right? So not a head gasket problem. Bent valves from a jumped chain? I think it is a nice opportunity to take it out and get it all cleaned up. Farmer's overhaul with just rings bearings and gaskets won't cost more than $300 or $400 but machining and all the other stuff that goes along with it would be considerably more.

05-28-2016, 10:19 AM	#1
CecilDunn Registered User Join Date: May 2016 Location: Cortez, Co Posts: 21	HELP! My truck just quit running while driving and now won't start Yesterday evening I'm driving and my truck seem to start running rough then just quit had a quick look over and tried to get it started no go pumps pumping plugs all look fine and getting spark when u turn it over I do notice a putting sound out of the exhaust any ideas out there

05-28-2016, 12:44 PM	#2
61K10 Registered User Join Date: Feb 2012 Location: pleasant valley--placerville ca Posts: 3,039	Re: HELP! My truck just quit running while driving and now won't start need a little more info--what year tk -- what eng? how many miles on the eng? __________________ 1961 chevy K10 my build is------------61K10 build

05-28-2016, 01:03 PM	#3
CecilDunn Registered User Join Date: May 2016 Location: Cortez, Co Posts: 21	Re: HELP! My truck just quit running while driving and now won't start Got it started running real rough though 62 283 sounds like it's missing at certain rpm rattles n shakes should I check compression plugs didn't look bad when it quit sounded like wasn't getting gas Attached Images

05-28-2016, 04:28 PM	#4
LostMy65 But Found Her 25yrs Later! Join Date: Oct 2010 Location: Oregon City, Oregon Posts: 10,525	Re: HELP! My truck just quit running while driving and now won't start Timing chain may have jumped a tooth. __________________ I lost my 65 - Found it 25 years later: http://67-72chevytrucks.com/vboard/s...d.php?t=426650 66 C20 Service Truck: http://67-72chevytrucks.com/vboard/s...d.php?t=428035

05-28-2016, 04:31 PM	#5
LostMy65 But Found Her 25yrs Later! Join Date: Oct 2010 Location: Oregon City, Oregon Posts: 10,525	Re: HELP! My truck just quit running while driving and now won't start Is it an old points distributor, or have you upgraded to HEI? __________________ I lost my 65 - Found it 25 years later: http://67-72chevytrucks.com/vboard/s...d.php?t=426650 66 C20 Service Truck: http://67-72chevytrucks.com/vboard/s...d.php?t=428035

05-28-2016, 04:46 PM	#6
CecilDunn Registered User Join Date: May 2016 Location: Cortez, Co Posts: 21	Re: HELP! My truck just quit running while driving and now won't start Points

05-28-2016, 06:12 PM	#7
CecilDunn Registered User Join Date: May 2016 Location: Cortez, Co Posts: 21	Re: HELP! My truck just quit running while driving and now won't start Compression test ran with sad results thought I would like to look under the valve covers but I am having trouble removing those to investigate further seem to be stuck on from number years of abuse guess it's just time to replace and rebuild any thoughts? Attached Images

05-29-2016, 02:47 PM	#8
TopFuel1966 Registered User Join Date: Jul 2009 Location: Menifee, CA Posts: 471	Re: HELP! My truck just quit running while driving and now won't start If the motor is running rough and is puffing out of the exhaust I would venture to guess that a leakdown test would reveal worn/sticking/burnt exhaust valves in #7 and #8 cylinders at the very least. Depending on mileage it's probably time for a rebuild.

05-29-2016, 07:35 PM	#10
Rodder29 Registered User Join Date: Nov 2015 Location: Mt Lehman BC Posts: 9	Re: HELP! My truck just quit running while driving and now won't start Before you yank the engine, do a little bit more troubleshooting. Squirt some oil down the spark plug holes, then do another compression test, and hold the pedal to the floor as you're cranking the engine over. If the compression ratio comes up then you know you have a problem with the rings, if not then you likely have leakage past the valves.

05-30-2016, 04:25 PM	#11
vince1 Registered User Join Date: Jan 2013 Location: Calgary Alberta Posts: 1,166	Re: HELP! My truck just quit running while driving and now won't start 7 and 8 are across from each other right? So not a head gasket problem. Bent valves from a jumped chain? I think it is a nice opportunity to take it out and get it all cleaned up. Farmer's overhaul with just rings bearings and gaskets won't cost more than $300 or $400 but machining and all the other stuff that goes along with it would be considerably more.



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