5.9 magnum 01 ram cylinder #5 misfire
That sure ain't the problem then. 
You could try the test, see if you are pulling vacuum on the crankcase..... Disable and plug the PCV system, so the engine is basically 'sealed', take off the oil fill cap, start the engine. You should feel a breeze coming OUT, if it is sucking in, you have an internal leak somewhere.

You could try the test, see if you are pulling vacuum on the crankcase..... Disable and plug the PCV system, so the engine is basically 'sealed', take off the oil fill cap, start the engine. You should feel a breeze coming OUT, if it is sucking in, you have an internal leak somewhere.
Maybe. Depends on how bad it is. (and whether the engine was warm/hot/cold when the test was done.) These heads are absolutely notorious for cracking around the valve seats..... If you can, a leak-down test would be rather informative.
Have you done a compression test? Can you post the results? (dry/wet)
Have you done a compression test? Can you post the results? (dry/wet)
Maybe, but, it *shouldn't*..... Could try setting it back to stock, and see if anything improves.
Make sure the connector on the injector is tight...... that can give you a miss as well.
Make sure the connector on the injector is tight...... that can give you a miss as well.







