Truck want run with spark plug wire plugged up

Asked by Nov 19, 2017 at 08:31 PM about the 1996 Chevrolet C/K 1500

Question type: Maintenance & Repair

96 chevy truck cut off on me headed home and
would not start. Took it to a shop and mechance
said blow head gasket and that I need another
motor.  Towe'd it home and unplugged #3 spark
plug and it started. Tried to plug wire back up and
it dies. What is the problem?

16 Answers

20

What was it

2 people found this helpful.

Dis cap

Still want run. I changed distributor cap and rotor. Then changed whole distributor. Changed ignition coil and module. And all this with a different engine. I was told to try the ecu next.

20

Did you figure it out i have the exact problem with mines

1 people found this helpful.
20

I unplug spark plug wire #3 and turns in no problem but when i plug it back in it dies whole new distributer and coul and control moduel and crank and camshaft sensors but still no luck

1 people found this helpful.
40

Did either of yall have any luck? 96 suburban EXACT same issue. Will only run with cylinder 3 plug wire unpluged. Plug that one in and it kills the truck instantly like I turned the key off. Died out of random while driving. Been scratching my head for months and finally found this one and only forum where others have had the issue.

4 people found this helpful.
10

Not an answer, couldn’t figure out how to reply. I have the same problem, just curious, are you using AC Delco cap and rotor. I bought the cheap one, was thinking maybe it was the problem

1 people found this helpful.

Did anyone solve this problem

10

I have a 97 chevy 5.0l same problem trucks runs like a beauty with out spark plug 3 unplugged, new dist, spark plug wires crankshaft sensor camshafts sensor any solutions?

1 people found this helpful.
40

I have the same problem, I'm thinking there is a busted head or head gasket. Witch is causing compression either from #1 or #5? To bleed to the # 3 plug causing this to happen..will check compression tomorrow?

40

Update...its the distributor cap. #3 inside of cap runs right by the center button and burnt a hole thru to the coil ...replace cap good to go.

4 people found this helpful.
10

Did anyone else besides Cr3111mtman solve their problem? I’m now experiencing the exact same issue. Others have said they already replaced cap, rotor, or whole distributor with no fix.

1 people found this helpful.
10

My 01 has just started the same issue except mine is #2 plug. Has low compression on that cylinder and 60% leakdown. I am betting head gasket is somehow messing up the rest of the engine when it's plugged in

1 people found this helpful.
20

Hope this helps, it helped me. Unplugged #3 spark plug and my 1999 Tahoe 5.7 fired right up.

1 people found this helpful.

Mine had the same thing wrong with distributor cap . Thanks for posting pic and mine was a brand new cap .

Mine had the same issue (96 k2500) wouldn't start, unplugged #3 spark plug and it started. Replaced the distributor cap and it started first try.

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