86 Cj-7 Spark Inconsistent I6 - JeepForum.com
 
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post #1 of 4 Old 02-13-2015, 10:24 AM Thread Starter
SouthTxAggie
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1986 CJ7 
 
Join Date: Feb 2015
Location: Corpus CHristi
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86 Cj-7 Spark Inconsistent I6

I know the ignition posts have been hit hard but i feel i have a weird Case. if you watch the spark from the wire being held close to the Distributer and turn it over it starts out strong then weakens then goes out then comes back etc. It will not try to start at all, had one back fire from dumping fuel in the Carb. I have checked the Engine Module with a new one and that did not change anything. Could this be the Pick up coil in the distributer? or a bad ground somewhere? The odd thing is if you turn the Key off it has an intermitent spark at the coil. This Jeep sat for a year or so and tryed to idle at one point but lost fuel. I replaced the Fuel pump and got fuel to the carb and cannot even get it to fire by dumping gas in it. Firing order is on and time has not effected it. Also has all fresh plugs
thanks for the Help

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post #2 of 4 Old 02-13-2015, 11:30 AM
Rolandt03
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1983 CJ7 
 
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Location: Dade City
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I would check the coil itself, if they get to hot they will go bad. check connections at the coil as well.
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post #3 of 4 Old 02-13-2015, 01:57 PM Thread Starter
SouthTxAggie
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Thanks, could this also be symptoms of the pick up coil in the distributor?
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post #4 of 4 Old 02-13-2015, 06:18 PM
Mike Romain
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Quote:
Originally Posted by SouthTxAggie View Post
Thanks, could this also be symptoms of the pick up coil in the distributor?
Yes it could, but normally they just trigger the spark, they don't really control it. The ohm reading between the orange and purple wires should be 650 with a range between 400-800 according to the book. Mine failed at 485.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG AT's, 'glass nose to tail in '00, 'New' frame,wires and plumbing in '09. Carter BBD Carbed 4.0 HO in '10.
89 YJ Renegade. BBD Carbed 4.0 HO. Locked front and rear with 33x9.5 BFG AT's
Some Canadian Bush Jeep Runs and Build Photos: http://mikeromainjeeptrips.shutterfly.com (10 new albums added Sept 16/10)
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