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I put champion truck plugs they have always done me well.. Minus this last time. :smsoap:

Compression dry test 120, 129, 129,120, 115, 120. In order for 1 to 6. After doing the spark plug thing it seemed as if all the cylinders were making the same sort of problem. So I said F it Im going to buy spark plugs after putting new ones in the misfire was less and the code was then p3000...

seafoam made the misfire worse?:( I also switched the plugs/injectors and it did nothing so wen home and seafoamed and now the motor shakes likes crazy and im sure all the sea foam is out because i drove it for a while after to see if it would stop even put some 91oct fuel and still misfires...

Spark plug 1 Spark plug 2 Spark plug 3 Spark plug 3 Spark plug 4 Spark plug 5 Spark plug 6 Rotor Rotor Cap Tested fuel injector's resistance, 12. Unplugged injector while Jeep was running and it started sputtering, did this with each injector and same results. Hope these pictures...

Thanks I will try that tonight. And yes I have found this to be a wacky year. all sensors I have purchased for this jeep have been for different years some for 95 and some for 97 depending on the connectors.

1996 4.0l 150k miles 5 speed Sorry to create another "misfire thread" but after reading all other search results and trying those fixes I am still getting a code. The misfire is barely noticeable at idle/driving. Things replaced: Cracked header with APN header and new gasket. Crank shaft...

This is by far the coolest thing. I wish I had some know how like this. :cheers:

Check for a crack in the header/exhaust same thing happened to me. I know you would probably hear it but doesn't hurt to check.

I would agree I had zero pressure in the rail so I was thinking something with fuel was the issue until I tested the CPS. As soon as it was installed I tried to start it and fired right up and have pressure in the rail now.

Car would not start so I had to test it with the car off. I had a strong blue spark, snapping but low resistance in the sensor. I changed the sensor and it started right up. So not sure maybe what I am gauging my spark as strong, snapping, and blue is not very good but seemed to fix the issue...

This is wear I am leaning now. I just unplugged it and plugged it back in and it started up drove around the block and came home shut it off and now it wont start again I think the cps is the culprit. I will fix that and then hopefully find one of these APN headers that everyone talks about for...

Cool thanks. Still waiting to get a pressure gauge. I did get a scanner and a new code came on. p0118 After doing some research It says could cause "No Start Condition" I am going to test the ohms today and hopefully my pressure gauge will be in the mail when I get home. Has anyone heard of the...

Third time is a charm.. Tried this again and nothing no fuel even coming out. Tried to prime a few times and if any fuel comes out it is slow drip of a few drops.. Fuel pump? fuel pressure regulator? Fuel relay? Thank you again for the help.

Did this twice and pressure seems consistent. Will probably try this little guy: http://www.harborfreight.com/fuel-injection-pump-tester-92699.html tomorrow. One important thing I forgot to mention is that since I have had it, it rarely starts on the first try i have to crank it once then let...

hahah to bad I did that with the 99 I had. I want to keep this one. I am trying to get my hands on something to test the fuel pressure.

Doh! It is a 96 4.0. As far as engine goes there is no other modifications dead stock. I did recently change the serpentine belt and alternator both brand new. Yes blue snapping spark.

well guys jeep took a dump Symptoms: Wont start. Turns over fine just cranks.. When it happend I had just started motor cool, and it would start hesitating, like a misfire if i gave it gas it would want to die. If i held in the clutch it would rev up as soon as I pressed the gas it would...

Same Issue and I am in Albuquerque too.. So if you ever make a fix or want help coming up with something let me know. Because I have just gotten used to it:cry:

Whats wrong with having both?

Not sure the name I can take a picture and post it later tonight or tomorrow. Derek