2005 dodge ram 1500 4.7 misfire cylinder 2 52,000 miles

Check engine compression and compare. then test running engine compression most engines have about 130-170 cranking compression and about 90-110 running compression. OR bring that cylinder to its Top Dead Center compression stroke apply air to the cylinder and check to see where the air is going open throttle plate bad intake valve, from exhaust pipe bad exhaust valve, from oil cap piston rings.

I suppose it COULD be fuel...maybe an injector. But it would be best to troubleshoot the problem in the misfire first. Check to see if the cylinder is getting spark first, and if not, track the problem back from there, testing components as you go.

and the car still misfire???

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nexiq usb link

Trouble Code: P0307

Cylinder 1-10 Misfire Detected

Possible Causes:


Air leak in the intake manifold, or in the EGR or EVAP system.Base engine mechanical fault that affects only one cylinder..Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector).Ignition system problem (coil or plug) in only one cylinder.

Usually you get a code that tells you which cylinder or cylinders are acting up.
The code means the cylinder (s) are not providing power but does not tell you why.
So you have to figure out if it is an ignition, compression, or fuel problem to proceed. Could also be a vac leak.

Try changing the coolant temp sensor, it determines when the ECU shifts from open loop (cold) to closed loop(hot)

is there a check engine light come on? you can go to the parts store and have them check the code for you. if there is a miss fire then it will show what cylinder it miss fire on.
more likely one of the coil is bad

Did you get the valves reset after you changed the push rod? Check that the clearances are good.

these trucks destroy heads, should be under 7yr. 70,000 warranty, call a dealer to in quire.