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Unread 05-23-2013, 06:52 AM   #16
Que89YJ
Web Wheeler
1989 YJ Wrangler 
 
Join Date: Apr 2008
Location: Detroit, Michigan
Posts: 15,608
Yes, it is worth it. It is definitely cam/crank with the symptoms. I was just helping someone who had the code 27 and it ended up being the cam when I thought it was the crank because of the symptoms. Swap it out and if it doesn't do the trick you are looking at the crank sensor.

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Unread 05-23-2013, 09:30 AM   #17
nathanninja
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1991 YJ Wrangler 
 
Join Date: Apr 2011
Location: Collegeville, Pennsylvania
Posts: 801
Quote:
Originally Posted by Que89YJ View Post
Yes, it is worth it. It is definitely cam/crank with the symptoms. I was just helping someone who had the code 27 and it ended up being the cam when I thought it was the crank because of the symptoms. Swap it out and if it doesn't do the trick you are looking at the crank sensor.
Yeah I'll give that a shot today. I replaced the crank sensor about 6 months ago so it should be good
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Unread 05-23-2013, 07:45 PM   #18
nathanninja
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1991 YJ Wrangler 
 
Join Date: Apr 2011
Location: Collegeville, Pennsylvania
Posts: 801
Okay well I swapped the distributors and no change but I did a bunch of testing and long story short it ended up being a bad injector on #1. So the rough running is gone now but now I'm blowing white/blue smoke out of the exhaust. So from one problem to the next. I REALLY hope it's not bad rings

Edit: actually thinking about it, since the injector seemed to be stuck open (the spark plug I pulled was SOAKED in fuel after just a few seconds of running) so maybe that was just leaking fuel into my oil, which would make sense because when I checked the oil it seemed slightly higher than I remembered, and it smelled faintly of gas. Also the white smoke is definitely smoke not steam, and no coolant in my oil or vice versa
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Unread 05-24-2013, 11:49 AM   #19
Que89YJ
Web Wheeler
1989 YJ Wrangler 
 
Join Date: Apr 2008
Location: Detroit, Michigan
Posts: 15,608
did you do the fuel pressure bleed down test to find it?
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Unread 05-24-2013, 12:06 PM   #20
nathanninja
Registered User
1991 YJ Wrangler 
 
Join Date: Apr 2011
Location: Collegeville, Pennsylvania
Posts: 801
Quote:
Originally Posted by Que89YJ View Post
did you do the fuel pressure bleed down test to find it?
Nope I just pulled the spark plug and saw it was soaked in fuel. Tested the spark on it and it worked fine so I assumed it was the injector being stuck open. Switched it with a spare and it fixed the problem
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