Recent content by GregB58

Well the old girl passed emissions last Friday. To clear the P0300/301 errors was probably a combination of a few things. The last two were replacing the coil and pulling the fuel injectors, cleaning and replacing the O-rings. A real close inspection showed a few small cracks in the O-rings...

Well, it appears that I have a cracked exhaust manifold which has possibly burned out the catalytic converter. Of course this is what is causing of the P0420 error. The guy at the shop who looked at it owns a CJ and says he has worked on XJ's a lot. He showed me one leak which was at the weld...

Thanks. The info on the WJ and ZJ is what I was looking for.

My 96 XJ has a broken front drivers seat which is rather annoying. So I pulled it out this weekend to see about a temporary weld job to give it better support while I search for a new seat and continue to try to solve my error codes to get this thing to pass emissions checks. Unfortunately, once...

That was my plan in regards to the injectors. I want to do the Mopar CCC or Seafoam and then swap the injectors and spark plugs afterwards. If you have a link handy for the full Seafoam process I'd appreciate it.

mcnamaag Not yet I haven't. I was hoping to find 2 more 703 fuel injectors then use some Mopar CCC through the intake. Then replace the stock injectors with the 703s. So far I've only found 1 donor car and thus only 4 injectors. Of course that was dependent upon it not throwing error codes long...

Well I'll be da*#ed! It didn't throw a P0300 or P0301 this time. It threw a P0420 this time. I'm not sure if that is progress or not since I haven't searched for a P0420 yet.

Well I'm running out of things that I think I can check myself. I have gone through every one's suggestions with the exception of 8Mud's "Put your compression tester into the number one cylinder, with the distributor cap off turn the motor by hand until the rotor gets near the number on...

I'll see about picking up one tomorrow. Thanks

I redid the dry compression test this evening. I pulled all the plugs, braced th throttle wide open and turned it over 5 times on each cylinder. Results: 1 - 165 2 - 170 3 - 155 4 - 165 5 - 165 6 - 155 Here are the pictures of the plugs currently installed, #1 is to the bottom Also here is a...

re: New injectors. I found 4 703's this weekend at a local salvage yard. Need to go find another donor vehicle this weekend. So once I have those and have them cleaned up with new o-rings I'll be swapping all of the injectors.

They are new spark plugs and were clean as of last week. I'll check again this week since I want to do a repeat of the compression tests.

OK. Time has been scarce the last couple days. Anyway, as I mentioned previously I switched the fuel injector from #1 cylinder to the #4 cylinder and #4 to #1. 2 days later the check engine light popped on and an ODB test showed a P0300 and P0301, the same as before. Tonight I did a vacuum test...

Well, we pulled the #1 fuel injector and swapped it with #4. It ran for almost 2 days without tripping the error code. Today the service engine light popped back on with the same as before, P0300 & P0301. So got to try some other things. Thanks 8Mud for your response. I'll work through your...

Thanks. I have been doing some looking at other sites and someone else's post said the normal compression psi for a 4.0L XJ is 120 to 150? Wonder how am I getting a couple 175s and 180s? Is this normal? I'll run the checks again this evening since I was just turning the key last night and my...