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Idle-Timing issue

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Old 08-28-2014 | 10:34 PM
  #16  
cruiser54's Avatar
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From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
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Originally Posted by Cherokeekid4x4
The whole reason for this question was because when I did set it I left it a tad before hitting cylinder one. Maybe making it a tad retarded and causing a long start/choppy idle. Also I was told when you drop the rotor back in it shifts a little. So I left it ahead so when I dropped it down it would face cylinder one. I simply just wanna know if it would still run if it was off by even a little bit. I know how to set the timing, I understand where it should be pointing.
It will run, but poorly. Gotta be right on.
Old 08-28-2014 | 10:58 PM
  #17  
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From: Nor-Cal Coast
Year: 90,84
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Engine: 4.0,2.5
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Originally Posted by Cherokeekid4x4
I know how to set the timing, I understand where it should be pointing.
Good, so you got it. You start with it around 4:00, so as it rotates coming down it lands at around 5:00. These puter controlled are different then vacuum advanced. The rotor tip needs to be almost too far ahead, leaving, a tad past, so when the puter advances the spark it can still reach the electrode. Not pointed right at, or at all behind #1.

Cruiser can correct me if I'm backwards, again!
Old 08-28-2014 | 11:00 PM
  #18  
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From: Kansas
Year: 1994
Model: Cherokee
Engine: 190-hp, 4.0-liter I-6
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Originally Posted by DFlintstone
Good, so you got it. You start with it around 4:00, so as it rotates coming down it lands at around 5:00. These puter controlled are different then vacuum advanced. The rotor tip needs to be almost too far ahead, leaving, a tad past, so when the puter advances the spark it can still reach the electrode. Not pointed right at, or at all behind #1. Cruiser can correct me if I'm backwards, again!
Gotcha, thanks!
Old 08-28-2014 | 11:01 PM
  #19  
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From: Kansas
Year: 1994
Model: Cherokee
Engine: 190-hp, 4.0-liter I-6
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Originally Posted by cruiser54
It will run, but poorly. Gotta be right on.
So I'd have bigger problems than a choppy idle? Thanks!
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