Big problem, reallyned some help
Lead Driver
Joined: Nov 2007
Posts: 5,139
Likes: 209
These motors are pretty tough. I had a leaky injector and ran until it almost hydro'd. I finally shut it down when I couldn't stand the sound of it anymore. It needed a new injector and an oil change. That was 60K miles ago and I haven't had any associated problems since.
Elder User
Joined: Dec 2005
Posts: 604
Likes: 3
Try this......
Start the truck and remove the oil fill cap. LOTS of blow by? PUFF PUFF PUFF. If so, you may have cracked or burned a piston. Blow by not bad? You may have torn a injector O-ring, not got the injector seated correctly, or lost a injector tip. That knocking is probably just excess fuel knock, but dont run it that way long. Pull the glow plug and look at the piston with a bore scope, ESPECIALLY if the glow plug tip is missing or smashed or the injector tip is broke. Any damage to the piston crown and you can almost be sure that it is time to pull the motor/head. Pretty good odds that the pieces got smashed into the head/valves. GOOD LUCK We have a customers van that did the exact same thing, cylinder 5 split a tip and the customer ran it home about 70 miles smoking like a freight train. Let it idle about 5 mins. and then it started knocking and locked up. Pulled the injector and glow plug. Injector split, knocked the tip of the glow plug off and beat the hell out of the piston and head.
Senior User
Joined: May 2009
Posts: 357
Likes: 0
Buddie of mine has same injectors one failed and put enough oil fuel in the oil to make it die on the freeway. the injectors were in about a month and all replaced under warrenty at the shop along with an oil change. Prolly had a couple of thousand miles prior and a few after being fixed seems to have no perminate damage. hope its that simple for you, good luck.
