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1980 GMC Truck Repair Question


Topics covered: Spark, Battery, Distributor.
Mileage: 50,000 miles.

Asked on January 6, 2013

GMC Truck Spark Problem

I just did a tune up on my truck and now theres no spark going to my plugs or wires, what could i have done wrong?
Avatar Asked by jessesandberg

Answer

Replied on January 6, 2013

check the cap and rotor. make sure the 3 wire connector is on. make sure the power wire is in the right spot and not the tach spot in the cap

Roy

Tiny Answered by ASEMaster6371 (expert)
24,836 answers provided
Replied on January 6, 2013

What was replaced?

Tiny Answered by Docfixit (expert)
18,430 answers provided
Replied on January 6, 2013

Spark ugs, spark plug wires, cap and rotor, oil change, battery

Tiny Response from jessesandberg
11 questions asked

Replied on January 6, 2013

When i took the old one apart the red wire was on the right and the yellow wire was on the left, so i put them in that same placement on the new one. If thats what your trying to tell me, would i be looking at points-type ignition or HEI ignition?

Tiny Response from jessesandberg
11 questions asked
Replied on January 6, 2013

80 should be HEI

look on top of the cap. they will be marked. red is power wire

Roy

Tiny Answered by ASEMaster6371 (expert)
24,836 answers provided
Replied on January 6, 2013

I think i may have found my problem, i was going by points-type ignition because when i took it off wire #1 was on the left side of the tach cap i was sure, if the plug wires were in the wrong order could that be the problem? I know the firing order around the distributor is right, it could just be in the wrong spots??

Tiny Response from jessesandberg
11 questions asked

Replied on January 6, 2013

yep, easy fix, no damage

Roy

Tiny Answered by ASEMaster6371 (expert)
24,836 answers provided
Replied on January 6, 2013

Awesome, i kind of feel like an idiot now but il go give that a try and let you know

Tiny Response from jessesandberg
11 questions asked
Replied on January 6, 2013

Would that be why there no spark going to the spark plugs tho?

Tiny Response from jessesandberg
11 questions asked
Replied on January 6, 2013

no power to power up coil

roy

Tiny Answered by ASEMaster6371 (expert)
24,836 answers provided