1986 runs rough
Thread Starter
Heel & Toe
Joined: Apr 2016
Posts: 17
Likes: 1
1986 runs rough
Any help? 86 runs rough. Runs like it has a miss. Seems like cylinders 1&2 aren't firing. With it running if u drip water on the manifolds at ea cylinder the water dissipates immediately except on 1&2. It is getting spark I checked that. The injectors r pulsing u can feel that. I unplugged the front ones on the drivers side while it was running and it didn't change the way it ran. So I'm hoping maybe injectors are clogged. They were changed apparently by the previous owner. The only code it's throwing is for the IAT sensor would that cause it to run this crappy or does it go much deeper? Any help would be appreciated. Thanks
Melting Slicks
Joined: May 2014
Posts: 2,894
Likes: 592
From: New Port Richey FL
OK in the meantime until you do the compression test have you looked at the wires & cap? you could be a victim of a weak spark or cracked cap cross arching,you may have spark at plug end but is it a strong spark. Are your plug wires oil soaked or showing any signs of possible arching?
Last edited by s carter; May 3, 2016 at 09:55 PM.
Thread Starter
Heel & Toe
Joined: Apr 2016
Posts: 17
Likes: 1
OK in the meantime until you do the compression test have you looked at the wires & cap? you could be a victim of a weak spark or cracked cap cross arching,you may have spark at plug end but is it a strong spark. Are your plug wires oil soaked or showing any signs of possible arching?
Team Owner
Joined: Sep 2003
Posts: 20,179
Likes: 673
From: Freedom is never more than one generation away from extinction.
St. Jude '03 thru '24
Somethings to consider since your a junior member I'm assuming this 86 is new to you.
Check the wiring harness connectors for bare/exposed wiring.
If your fussing around the vacuum lines chances are you'll crack some. Pickup a foot or tube of small rubber vacuum line to repair those cracked sections.
Check the wiring harness connectors for bare/exposed wiring.
If your fussing around the vacuum lines chances are you'll crack some. Pickup a foot or tube of small rubber vacuum line to repair those cracked sections.
Melting Slicks
Joined: May 2014
Posts: 2,894
Likes: 592
From: New Port Richey FL
Somethings to consider since your a junior member I'm assuming this 86 is new to you.
Check the wiring harness connectors for bare/exposed wiring.
If your fussing around the vacuum lines chances are you'll crack some. Pickup a foot or tube of small rubber vacuum line to repair those cracked sections.
Check the wiring harness connectors for bare/exposed wiring.
If your fussing around the vacuum lines chances are you'll crack some. Pickup a foot or tube of small rubber vacuum line to repair those cracked sections.
or if you take Cliffs Scenario swapped down by the plugs #1 & #3 Left front 2 Cyl.
Last edited by s carter; May 4, 2016 at 07:16 PM.
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