Pre 84 Trucks 1st gen pickups

'76 20R spark problem

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Old Apr 21, 2008 | 11:09 AM
  #1  
BC4Runner's Avatar
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From: Revelstoke BC, Canada
'76 20R spark problem

So I'm trying to revive a '76 20R pickup, replaced plug wires & spark plugs, I now have no spark on cylinders 1 and 3...any suggestions on where to look next?? ...Thanks
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Old Apr 21, 2008 | 11:40 AM
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I would try the distributer cap and rotor, it may be just old and need of replaceing. any way its a good thing to chage and cheap

Last edited by yotawise16; Apr 21, 2008 at 11:42 AM.
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Old Apr 21, 2008 | 01:03 PM
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From: Sweet Home, OR
happened to my 77, its the dist. cap. Take it off and shoot a flashlight into it, you'll be able to see a trail jumping from one electrode to the other. New rotor wouldn't be a bad idea while you're at it. Should only cost 10 bucks tops for both.
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Old Apr 22, 2008 | 09:15 AM
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purrs like a kitten....a 32 year old kitten...thanks guys
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Old Apr 23, 2008 | 08:07 AM
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Well, spoke too soon...
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Old Apr 23, 2008 | 04:38 PM
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doing the same thing? Timing? Points set?
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Old Apr 24, 2008 | 07:54 AM
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Ya doing the same thing, was somehow running great for a few hours, then started missing on random cylinders...
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Old Apr 24, 2008 | 02:50 PM
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From: Sweet Home, OR
could it be running really rich? What happens when you rev it?

Like I said check timing and set points.
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Old May 12, 2008 | 08:42 AM
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Well I had a few other things on the go and this was put on the back burner. So I got a new distributer, now there is new plugs, wires, and rotor. Wondering about any links or tips on getting the timing right, never dealt with timing before...

Any help is appreciated, thanks
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Old May 12, 2008 | 08:45 AM
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rdlsz24's Avatar
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From: Northern IL
Check this out:

http://www.autozone.com/N,308059/ini...00c1528004d288

Rob
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