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Unread 07-23-2010, 12:43 PM   #1
abrokjp
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1978 CJ5 
 
Join Date: Oct 2005
Location: Lancaster, OH
Posts: 24
Idle Issues

Let me begin by saying I am not a mechanical genuis. What I know I learned here or from my CJ5 (usually the hard way).

I drove my Jeep for about an hour early this morning with no issues. A couple of hours later my daughter and I took it to town and it would completely die when coasting to a stop sign. It would start right back up every time, but I had to keep my foot on the gas when at a stop.

I figured the idle was out of adjustment so when I got back to the house I ran it and just screwed the idle screw in/out until it was running even. Took it for a test drive with no issues. Later I was noodling around under the hood and heard something that normally isn't there. I look at my fuel filter (clear) and there are bubbles coming up in the fuel that is present in the filter. Screwed the idle adjustment back out and it stopped.

I assume these bubbles can't be good, right? But if I have to have it turned up to get it to run, is there something else that could be causing my issues?

Thanks,
Matt

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Unread 07-23-2010, 01:14 PM   #2
honkytonkrollti
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1980 CJ5 
 
Join Date: May 2010
Location: Fort Drum, NY
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Please fill out your Jeep profile so we can see your Jeep's specifics ie what motor/carb you're running. This will help you get answers faster.

Respectfully,

Kevin
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Unread 07-23-2010, 02:03 PM   #3
abrokjp
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258 w/MC 2100.
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Unread 07-24-2010, 08:13 AM   #4
abrokjp
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1978 CJ5 
 
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This is weird. It is like when you blow through a straw into water - steady line of bubbles in the filter. I have checked all of the soft fuel lines for cracks and all of the clamps. I couldn't see anything but I am going to replace all of them anyway.

Any other ideas?

Thanks,
Matt
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Unread 07-27-2010, 08:35 AM   #5
twmattox
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Fuel pick-up filter (also called a fuel sock). If it is cracked it can cause this too...especially when the fuel level drops...
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Unread 07-27-2010, 11:20 AM   #6
Ken4444
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Sounds like vapor lock. It sounds like you may not have the correct fuel filter that has a third fitting on it to allow gas vapor to return back to the gas tank.
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Unread 07-27-2010, 01:45 PM   #7
tigercreek
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Quote:
Originally Posted by Ken4444 View Post
Sounds like vapor lock. It sounds like you may not have the correct fuel filter that has a third fitting on it to allow gas vapor to return back to the gas tank.
I second this.
The filter with 1 inlet and two outlets really helps. Make sure the return outlet (offset) is on top.
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carb , carburator , dying , fuel filter , fuel pump , idle , stalling , vapor lock
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