Advice from a Deuce mechanic needed

[mrgerke81]

I have a M35 Deuce and half with the Hercules engine. Recently I had a stuck injector and had it fixed and reinstalled. Truck runs very rough still and smokes. I am getting out of my scope of expertise and looking for a mechanic or shop to look at the problem. I live in the Raleigh NC area. Any advice will help.

Thanks

 

[phil2968]

Contact AmGeneral on here. He is in Hickory NC. Excellent deuce mechanic.

 

[EWhytsell]

What do you mean by "smokes"? These trucks smoke pretty good, especially if the fuels turned up and/or its a non turbo model.

 

[mrgerke81]

An old salt told me it sounds like a skip. I am lacking experience for checking compression. And working on heads.

 

[RAYZER]

A compression test should be your next step.

 

[Ryanpowell167]

If the injector hung open, there is a chance that you've melted a piston or scored a cylinder. Second the compression check, if low then inspect valve train and if that's good then your yanking a head.

 

[Jeepsinker]

I'm goin to go with the melted piston diagnosis. Maybe washed rings.

 

[mrgerke81]

The old salt doesnt think the piston is messed up because there is no blow by or excessive smoke coming out of breather.

 

[Ryanpowell167]

Could have melted a valve or if it messed up the head then it would not blow into crankcase.

 

[Jeepsinker]

My truck runs fine and I have a bunch of blowby.

 

[Recovry4x4]

Get a no contact infra red temp gun. let it run and start scanning the area of the exhaust manifold at each exhaust port. Find the cold one and start there.

 

[RAYZER]

Maybe you have another stuck injector or a clogged injector line.

 

[mrgerke81]

Okay, here is the latest. I did a compression test today. From front to back(radiator to fire wall)

#1 350psi
#2 0psi
#3 0psi
#4 350psi
#5 350psi
#6 will build to 200psi and leak down to 100psi

looks like the heads must come off. Now to just find the time.

 

[RAYZER]

Okay, here is the latest. I did a compression test today. From front to back(radiator to fire wall)

#1 350psi
#2 0psi
#3 0psi
#4 350psi
#5 350psi
#6 will build to 200psi and leak down to 100psi

looks like the heads must come off. Now to just find the time.

Ouch!
May be able to find a good used engine, might be cheaper and easyer.

 

[FloridaAKM]

That has got to hurt to see those numbers come up. Good luck on getting her repaired...or the engine replaced like Rayzer suggested!

 

[gimpyrobb]

I'd at least pull the heads and give her a looksee. Couldn't a bad head gasket give such poor numbers?

 

[Ryanpowell167]

A bad head gasket would manifest as over heating and cooling system over pressure before it would yield no compression.

 

[mrgerke81]

What would be normal compression on a good motor.

 

[Ryanpowell167]

Typical diesel compression on the fords I work on are 350+. I would say the cylinders you have 350 on are fine

 

[EWhytsell]

Get a no contact infra red temp gun. let it run and start scanning the area of the exhaust manifold at each exhaust port. Find the cold one and start there.

Thats a very good, quick, approach to finding the trouble area of an engine. I'm surprised you don't see it mentioned more often.