Hi Guys and gals!
I have a 1999 Bobcat 873 Skidsteer with about 3500 hours on it.
It's been super reliable and we've owned it for 15 years now.
Today, was digging and not pushing it real hard, only about half throttle.
Suddenly, the RPM's spiked and white smoke was coming from the exhaust. HEAVY white smoke.
There was a heavy knocking sound also.
Turned off the key, it did NOT shut down.
Throttled the lever down, engine did NOT throttle down.
Only way I shut it down was snubbing it out with hyd. back pressure.
Once shut down and throttle in the idle position, motor will start and run fine at idle but any throttle more than 1/4, and she does it again.
I'm thinking it's the oil seal in the turbo that is failing.
Engine RPM goes up and so does the oil pressure.
The extra oil in the cylinders causing a run away condition.
I haven't looked into it yet but I'm thinking it's time for a turbo.
What are your thoughts on this? Really need to get this fixed ASAP as I use it every day.
Thanks for any replies and suggestions!
That extra oil pressure going past the seal in the turbo and causing the over run and dieseling
I have a 1999 Bobcat 873 Skidsteer with about 3500 hours on it.
It's been super reliable and we've owned it for 15 years now.
Today, was digging and not pushing it real hard, only about half throttle.
Suddenly, the RPM's spiked and white smoke was coming from the exhaust. HEAVY white smoke.
There was a heavy knocking sound also.
Turned off the key, it did NOT shut down.
Throttled the lever down, engine did NOT throttle down.
Only way I shut it down was snubbing it out with hyd. back pressure.
Once shut down and throttle in the idle position, motor will start and run fine at idle but any throttle more than 1/4, and she does it again.
I'm thinking it's the oil seal in the turbo that is failing.
Engine RPM goes up and so does the oil pressure.
The extra oil in the cylinders causing a run away condition.
I haven't looked into it yet but I'm thinking it's time for a turbo.
What are your thoughts on this? Really need to get this fixed ASAP as I use it every day.
Thanks for any replies and suggestions!
That extra oil pressure going past the seal in the turbo and causing the over run and dieseling