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Old 05-24-2006, 02:33 PM   #1
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Unhappy air in fuel line

my 98 wrangler runs fine for the first little while, at freeway speed, and then loses power, coughs, and sputters. power slowly decreases, until it goes down to 20 miles per hour. it's not uniform on how long it runs good, sometimes for 20 minutes, sometimes 2 hours. when i stop, i check the pressure in the fuel line, and it's usually full of air. yesterday, i tried letting all the air out until gas came through, but the air ran out, and no gas came thru. same thing happened last year, so i replaced the wire and hose harness coming of the gas tank. would it be gone out again, or is there something else i might check. PLEASE HELP!!

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Old 05-24-2006, 03:10 PM   #2
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Sounds like you may have a crack in the fuel line somewhere. I would not think it would be too hard to find. Light a match to see better.......lol........just kidding, really, don't do that.

Are you sure that your gas cap is sealing properly? Make sure it is the correct one for your Jeep.

As this appears to be your first post, WELCOME to this Forum!!!!!!

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Old 05-25-2006, 12:41 PM   #3
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What level is the gas tank when it's doing this? any pattern?
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Old 05-25-2006, 01:05 PM   #4
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I have exactly the same problem, as the problem is random and it looses power and just seems like it not getting enough gas. i have had the gas tank level, and on uphills and down hills. it dosnt matter. but i just dont know what to do, i never though about the fuel line though, is that a problem that can be fixed or do i just deal with it,(if i have to deal with it the next cliff i come to my jeep is going off because the problem will not stop so please tell me something is fixable).
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My first jeep, 97 wrangler SE **sold***
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Old 05-27-2006, 02:15 AM   #5
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I dont think it could be the fuel line (I mean a leaky fuel line could definitely cause fueling problems, but not air in the system, especially when the Jeep is running for a while) - the TJ fuel system is pressurized at roughly 40 to 60psi; air would have a hard time getting in there (considering the atmosphere is at 0psi [relative]) and fuel should just leak out. I would think the problem would be with the fuel pump or pick-up.
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Old 05-27-2006, 11:00 PM   #6
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i have replaced the fuel pump and it relieved one problem i had but it didnt fix this one it continues and sometimes i actully think it is worse. so any other ideas. i am all out of options and will take any suggestions.
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Barling Fire department

2008 rubicon unlimited
yellow, soft top half doors, otherwise stock till I
get some money!

My first jeep, 97 wrangler SE **sold***
4 cyl, 5 spd, soft-top, 3 in. black dimaond lift, 32x11.50r15 Copper discover STT, 4.0 throttle body, 2" TBS, Underwindshield light bar with 6 lo-pro lights.

89 cherokee
mostly blue, just a helpless shell. future rock crawler!
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Old 05-28-2006, 12:21 PM   #7
coilovers are damn flexy
 
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