Well if you have been on this forum as much as I have you would know almost everyone that has tried that ends up with a poor running engine or a non running engine.

So don't try it

 

Compression test, double check plug gap, check wire routing per the tsb, make sure you're using copper plugs NOTHING else, brass cap and rotor, and ohm check the coil for 12-15k between the tower and one of the pins and 1ohm between the 2 pins. This will virtually eliminate spark as the problem aside from the crank and cam sensors.


Follow this up with fuel pressure check. If you have good pressure you can swap an injector from a misfiring cylinder to one that doesn't misfire and see if it follows. When you're doing this ohm test for 12-14ohms between the injector pins. Should also be able to hear a click while running if you use a screwdriver as a stethoscope.


If all of this checks out run some 91 octane through it instead of regular. Misfire goes away then swap to a colder plug. If not it may be timing chain related.

 

Thank yo dapepper9,i am hoping to work on this evil rruck later today

 

Whoops. Evil truck

 

I should add that if you unplug the front 02 sensor is one way to check for a lean condition as it will throw the truck into a set open loop that runs rich.

 

I am assuming that will show up on scanner?

 

I assume so. I don't really use scanners tbh as these motors things have pretty much been figured out and if you follow the recipe you can fix anything. I have tuning anyways and tuning changes much of that stuff.

 

The higher octane does help my truck out a little. What exactly does a colder spark plug do? Would a quiet and normal running engine at times still be a timing chain? My last thing was a compression test and did the side of the engine giving me the codes #1 120PSI, #3 120PSI and #5 130PSI.

 

Have you ever tried seafoam you may have heavy carbon buildup or try spraying water down the intake you must use a mist spray not a heavy spray.

Try both see if you get any results remember don't poor it down too fast or over spray the water.

 

Yes, I did the seafoam thing with no resolve. Right now I'm leaning toward a valve or lifter problem. I'm trying a little Marvel Mystery oil in the gas and the crankcase just to see if it changes anything. Guess I can't expect this engine to last forever, even with good care. I will try a little mist spray of water as well to see if it makes any changes.
Also I wanted to add that in the distributor under the camshaft sensor is a metal piece attached to the distributor by rivets and have amongst my searches on the internet that some have a problem with the rivets coming loose. I checked mine and it's fine but it may be someone else's issue. Might not be a bad thing to check for.