Injector blow by

[fstboss]

Iv got a excavator with a V2403 motor and I'm getting blow by where the injector meets the head it smells like exhaust and there is dirt buildup around the injector. Is this a matter of just replacing the injector or could this be a bigger problem. Any help is appreciated, new to diesel engines. thanks in advance

 

[#40Fan]

You might get away with just resealing the injector. Remove, replace all of the seals, including copper washer on the tip. Reinstall with proper fastener torque.

 

[North Idaho Wolfman]

Iv got a excavator with a V2403 motor and I'm getting blow by where the injector meets the head it smells like exhaust and there is dirt buildup around the injector. Is this a matter of just replacing the injector or could this be a bigger problem. Any help is appreciated, new to diesel engines. thanks in advance

Matters which V2403 you have, there are three different injector types that were used in the V2403's.

A simple picture and I'll be able to tell you the type it uses.

If it uses the cartridge style then yes probably just need a new sealing washer.
If it uses a pencil injector it probably needs a new injector, because the seals are part of the injector.
If it uses the electronic injector it will not only need a new injector, but will also need to go to a Kubota dealer to be programed.