1997 3.0 ohv vin u

[chris2fan]

I Have changed every thing but the CKP TPS and cam sincer. new heads, alt, water pump,plug wires,and plugs, i am getting a P0301 #1 misfire check the ckp it has 1.5 volts key on engine not running,and 1.5 volts puls when rotating engine. the coil pack is reading 0.8 on all primary and 13600 secondary.no vac.leaks that i can find. i have put $870.00 into this car and i am read to junk it if i cant get it to run soon. ok it runs but with a misfire in #1 and it will not pass the state inspection till i get the light out and fix the misfire. HELP PLEASE!

[Airjer_]

So you can feel the missfire when its running?

It has spark on number one?

Have you checked injectors? Are you sure number one is working?

[chris2fan]

yes the #1 is working its getting spark and the injector is good and work right.and no vacumm leaks. I AM LOST the only thing i could think of doing now is take the head off and clean the piston to get all the carbon off. if there is any.and yes I can feel the missfire when it is running. and it is also hard to start when cold.

[shorod]

If you have fuel and air in the proper ratio, you have spark at the correct time, and you still have a misfire, then about the only thing left is compression. You should check compression on the cylinders and make sure #1 is contributing. If it is, then you need to figure out which of the other ingredients is not correct.

-Rod

[chris2fan]

I don't know if this would make a diff. but the heads are out of the junk yard not new head.did not work the heads just cleaned and installed.

[Airjer_]

Agreed, the next step is check for compression.