04 Liberty Random Misfire??

[jblake1986]

my 04 Liberty with 115k miles threw a code of Random Misfire and it was pretty hard to start. Once it is started it is no problem and runs great. I had just gotton gas so I thought it may of been bad fuel so I put some fuel injector cleaner in it and filled up with fuel from a different station. I also pulled the positive to clear the check engine light and it has not came back. Could it of just been the fuel? I am going to replace the plugs and fuel filter. Can anyone give me a diagram or some text on how to replace the fuel filter? and are the plugs easy to get to or is it crazy hard? I have not replaced the plugs for 65k and had that done at the dealer. Any help would be appreciated.

 

[belvedere]

The plugs have 65k on them?? If that didn't cause hard starting, I'd be surprised.

 

[trail rated]

The plugs have 65k on them?? If that didn't cause hard starting, I'd be surprised.

My KJ had 100K on the original plugs, I did not have any problems at all. Replacing the plugs did not improved gas mileage or idle.

 

[twack]

ya i just delt with that code. did it say wich cylinder it was. for me it was plugs. do all of them at the same time. its pretty easy to do

 

[JeepJeepster]

Start with plugs then move on to coils.

 

[Simpleman]

Had a 96 Dakota with same thing. Fuel Pump was bad. If you have a presure tester, check that.