Re: Almost did not make it home last night

Jul 08, 2003 10 Replies


About half way home from my local wheeling club meeting, my Jeep started


>choking and skipping and pretty much bucking like a wild Bronco! Then
>spent the next hour driving about 200 yds at a time. I would get it
>started, drive about a 100 yds fine then the motor would start cutting
>out, then would finally die. I sat along the rode for a while, for
>about the 4th time before another guy in a Jeep stopped and offered to
>help. He took me to get some gas, gas gauge does not work, but I had
>only gone 110 of my usual 170 miles between fill ups. Tried adding gas
>but that did not help. Got it started one more time and made it another
>half mile where it would not restart at all. He then offered to tow me
>the rest of the way home, about 3 miles. Got almost home, when going
>around a corner I did not brake enough and I ended up running over my
>tow strap, scuffing it pretty good.
>Went out this morning and it started fine, but is idling a little
>rougher. Going to try to replace plugs, wires, cap, rotor & fuel
>filter. Anything else I should check?

That would be my first start too.

Second, I would be wondering about the air filter on the gas tank vent. If blocked, it can act like that. Quick test for that is to crack the gas cap open. If the trouble stops change the filter.

Mike

86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's

DeepDiver wrote:

Great follow up Mike. Changing the fuel filter and not solving the problem then overlooking the air vent filter and moving on to other areas could drive someone insane! I can see it now...poor guy replaces EVERYTHING, fuel pump, plugs, ect...finally drops in a new engine and still doesn't run, so he sells it to his neigbor for 100 bucks. Neigbor changes vent filter on the spot and drives off, leaving a crying and broken man that will never recover...=:{)

Yup, I was geting ready to go the route of changing out all sorts of stuff till Mike set me straight on my evap canister problem a couple years back! Saved me untold time and money with just a simple test!

So where does your fuel tank now vent to?

Open air?

Mike

Aar>

Nope, that isn't the gas tank vent, that is the 'full tank' shut off tube for the gas pump nozzle or anti-backflow tube.

On the poly tank, there are two vents in the top of it. These connect together on the drivers side and are supposed to go to the charcoal canister.

Where do they go now?

Mike

Aar>

There is just a single hose connecting them together thus not venting anywhere. I do not have a canister. I assume the gas cap has been loose enuff to vent the tank for the last two years that the Jeep has been set up this way. I wonder if the new fill tube and full tank shut off tube that I just installed two weeks ago have changed the dynamics of the tank. I really don't think this is the problem as it is still idling rough, unless I have fouled the plugs to much by trying to limp home.

I am going to try a new fuel filter tonight, and possibly a friends PCM(I found out he always carries a spare PCM because of this exact issue on his CJ7). Also I am going to take a look at the plugs to see if they are fouled.

Just read that again.

Yup, the new filler hose is 99% the problem. The old one leaked eh?

Mike

Aar>

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