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#1 |
~Craig~
Join Date: Mar 2009
Location: Kearns Utah
Posts: 169
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Regarding My Friends Truck
He has a 72 gmc as well. We took it through the car wash, we paid for basic. But the lady gave us supreme. It was 15 degrees outise and the truck wasnt quite up to operating temp. The under carriage wash sprayed the engine compartment. About 30 seconds later it died. After numerous attemps to start it.. With the pedal to the floor it would idle 500 rpm with major back firing and irratic firing pattern. Finally got it to idle right but give it any gas it would die.
After 15 mins of idling we drove it home 40 miles. Its running ok but is missing on the passenger side. It will pull out of it and do it again...almost like a weak plug starts firing. My question is...Where do I start first? Plugs and wires? Did the motor firing like it was foul a plug...Or do you think water made it into the cap and there is just a lot of moisture there? Please help... |
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#2 |
Junior Member
Join Date: Mar 2007
Location: Hideaway, TX
Posts: 4,950
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Re: Regarding My Friends Truck
Sounds like moisture in the cap.
__________________
71 Suburban 350/700R4 Project Trixie 72 CHEVY,Highlander,SWB,396,T400 |
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#3 |
Registered User
Join Date: Jun 2008
Location: South Florida
Posts: 11,375
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Re: Regarding My Friends Truck
I would pull the dist cap and make sure it is all dry in there, spray enough WD40 in there.
If that does not help I would check all the plg wires pull the boots and make sure they are dry as well.
__________________
Get your facts first, and then you can distort them as much as you please!!!!!. Sylvester's build thread >>>http://67-72chevytrucks.com/vboard/s...ht=big+rebuild |
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#4 |
Between Trucks...
Join Date: Mar 2002
Location: Los Angeles, CA.
Posts: 3,830
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Re: Regarding My Friends Truck
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Beat it to fit, Paint it to match... ![]() |
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#5 |
Registered User
Join Date: Feb 2000
Location: Center City, MN, USA
Posts: 3,254
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Re: Regarding My Friends Truck
If it still has its factory point style ignition, I would also suspect the coil. If it is only missing on one cylinder I would suspect wires.
It sounds like your buddy would do himself a favor by doing a good old fashioned tune-up. And replace the ignition coil and wires. The old stuff can all go in one box that will easily slide into the bed for emergency road-side repairs.
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'70 cab, '71 chassis, 383, TH350, NP205. '71 Malibu convertible '72 Malibu hard top Center City, MN |
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