WHAT TO DO lb7 piston

[Mpsoldier]

doing a head gasket job today bc of white smoke when running and a waterfall coming out the overflow. now for what i discovered number three piston is melted. not through just the edges are guessing from a previous bad injector. this truck is not tuned and is fully stock. compression in this cylinder was 320 on a cold motor should the motor be pulled and piston replaced or don't bother. truck has 201k miles on it.

 

[ecc_33]

Do head gaskets and run it...That's what i would do. If you want to keep the truck for a long time then prob should pull the engine and replace a piston. Depends how bad it is too.

 

[Mpsoldier]

alright thanks yea not my truck customers guys is i belive 65years old just tows his little trailer nothing major. just deleted the egr cooler lol that was bad.

 

[TheBac]

If its not showing any signs that a hole or crack may start, you may as well run it.

Makes you wonder how many LB7s are out there with that kind of damage from bad injectors, though....doesnt it?

 

[Sledheadxp800r]

I bet I have some melted ones in my daily driver.

I have a set of lb7 pistons for sale if your interested.

 

[Mpsoldier]

i am going to run it but def makes you wounder about how many actually have melted pistons nvr seen something like it and yea no signs of cracks or holes. thanks sledhead for the offer if i need them i know who to contact.:hug:

 

[07nastymax]

Would you mind posting a picture?

 

[MACKIN]

If its not showing any signs that a hole or crack may start, you may as well run it.

Makes you wonder how many LB7s are out there with that kind of damage from bad injectors, though....doesnt it?

That and bent rods!

 

[MACKIN]

If its not showing any signs that a hole or crack may start, you may as well run it.

Makes you wonder how many LB7s are out there with that kind of damage from bad injectors, though....doesnt it?

i am going to run it but def makes you wounder about how many actually have melted pistons nvr seen something like it and yea no signs of cracks or holes. thanks sledhead for the offer if i need them i know who to contact.:hug:

Is this guy the original owner and never had the wick turned up? Myself I never had a injector go by way of excessive fuel. But I wonder if prolonged EGT'S would cause a melt. Also what's the chances of bent rods on a stock fuel system except a lift pump,no spray,oem turbo just 500 RWHP tuning? If high chances then there is numerous Duramaxs with unknown internal damage!

 

[Mpsoldier]

original owner of the truck yes and it had shit done to it but two sets of injectors and now the head gaskets. and yea once it stops raining i get a pic.