Komatsu Dozer wont start

[KyleB83]

The starter is a fresh rebuild and both batteries are brand new.. I didn稚 even think to take the air cleaner totally apart

 

[Sawyer Rob]

"Generally" a diesel has to crank at about 350 rpm to start...

If it starts on two, it will clean the air out of the other two...

SR

 

[Bob Rooks]

Your father-in-law is probably correct. Sitting for two years with untreated fuel, and most likely uncovered with less than half a tank of fuel, is just begging for diesel bugs (algae, but not algae). People don't realize how corrosive they are. They can completely ruin a set of barrels and plungers, and injectors. In my own experience they pitted the valve seats of the lift pump so bad it would barely pump fuel. Strongly suggest you treat the fuel with a biocide, and read this.

Microbial contamination of diesel fuel - Wikipedia

 

[KyleB83]

He put some in about a month ago.. we drained tank twice before we tried to start it

 

[Sawyer Rob]

Your father-in-law is probably correct. Sitting for two years with untreated fuel, and most likely uncovered with less than half a tank of fuel, is just begging for diesel bugs (algae, but not algae). People don't realize how corrosive they are. They can completely ruin a set of barrels and plungers, and injectors. In my own experience they pitted the valve seats of the lift pump so bad it would barely pump fuel. Strongly suggest you treat the fuel with a biocide,

Earlier this summer I started a Cummins that sat for 13 years! It rolled over about 3 times and started right up, with the 13 year old fuel. It's still has that 13 year old fuel in it, and it's still starting/running perfectly!

I don't use ANY additive in any of my diesel fuel! I keep the water out of my fuel, and have never had even one problem!

SR

 

[Bob Rooks]

You're getting white-ish smoke when cranking, and that is unburned fuel. Strong possibility that you have one or more dribbling injectors. The bad thing about this is that the unburned fuel is washing the liner walls of oil. That's why I asked about the pop testing.

 

[Bob Rooks]

Earlier this summer I started a Cummins that sat for 13 years! It rolled over about 3 times and started right up, with the 13 year old fuel. It's still has that 13 year old fuel in it, and it's still starting/running perfectly!

I don't use ANY additive in any of my diesel fuel! I keep the water out of my fuel, and have never had even one problem!

SR

Excellent! It's unfortunate that everyone isn't as lucky as you have been.

 

[Sawyer Rob]

Excellent! It's unfortunate that everyone isn't as lucky as you have been.

I'm lucky over and over as I use to buy OLD furnace oil out of tanks for cheep when folks would get rid of their fuel oil furnaces, and run it in every diesel I own. Never have I had even one problem... I do admit, 13 years is the oldest fuel that I know of that I have used...

IF I'm so lucky, how come I can't ever get the right LOTTO numbers???

KEEP THE WATER OUT OF YOUR FUEL!! That's the only thing you really need to do!

SR

 

[Bob Rooks]

I'm lucky over and over as I use to buy OLD furnace oil out of tanks for cheep when folks would get rid of their fuel oil furnaces, and run it in every diesel I own. Never have I had even one problem... I do admit, 13 years is the oldest fuel that I know of that I have used...

IF I'm so lucky, how come I can't ever get the right LOTTO numbers???

KEEP THE WATER OUT OF YOUR FUEL!! That's the only thing you really need to do!

SR

Using old furnace fuel is good for the fuel components, but bad for the environment. Older furnace fuel is not the same as off-road diesel. It likely had a sulfur content of over 2,000 ppm, or if not so old, 500 ppm (LSD). Sulfur is a key lubricating component of diesel fuel. Any fuel you get nowadays is going to be ~15 ppm (ULSD) whether on or off road. And as you suggest, you can't get your fuel clean enough.

 

[Sawyer Rob]

Using old furnace fuel is good for the fuel components, but bad for the environment. Older furnace fuel is not the same as off-road diesel. It likely had a sulfur content of over 2,000 ppm, or if not so old, 500 ppm (LSD). Sulfur is a key lubricating component of diesel fuel. Any fuel you get nowadays is going to be ~15 ppm (ULSD) whether on or off road. And as you suggest, you can't get your fuel clean enough.

You forgot about the part......it was good for my pocket book too! 50 cents a gallon!!

Equipment isn't complaining and I'm not complaining....all is good!

SR