Just a thread on working on my 200tdi.
(Don't mind the pushrods in the head. One of the bolts holding onto the rocker shaft stripped the head and I'm still trying to remove it.)
Not sure what happened but the truck has been quite down on power for years. I checked all the usual bits, set the FIP timing on the dot, put in a fuel pump, Everything was spot on, nothing was amiss.
I completely rebuilt the turbo, sandblasted and ceramic coated the exhaust header and downpipe, new exhaust/intake gasket, etc. Still no change in performance.
Oil mist has been steadily blowing out of the dipstick tube. It couldn't have been much because I have not really been losing a noticeable amount of oil. Long term observation of the oil filler cap on the head while running has shown no pressure coming out the valvetrain. No pressure blowing out the cyclone. Still, the oil coming out of the dipstick tube was a little concerning.
Coolant leaks have been an issue on the truck for a while: mystery coolant loss, nothing amiss on the truck, so I just filled the coolant regularly. On the last wheeling truck up to BDO at the cove, I realized that faint steam was coming out from under the bonnet.
When I popped the bonnet, I found that the interface between the thermostat housing and the head was spraying coolant in a fine mist. Had to carry several gallons of distilled water with me on the remainder of the trip home, filling up the coolant along the way.
Took off the head, expecting the worst, actually found the head in good condition.
During removal of the head, some of the head bolts were not nearly as tight as others - these "loose" bolts were near the middle two cylinders of the head on the exhaust manifold side.
Looking at the headgasket, it looks like a bunch of stuff was traveling through the headgasket - coolant, oil, combustion gases - all just kind of leaking around when the engine was hot.
2 of the 8 valve lash caps had busted through the center.
(Don't mind the pushrods in the head. One of the bolts holding onto the rocker shaft stripped the head and I'm still trying to remove it.)
Not sure what happened but the truck has been quite down on power for years. I checked all the usual bits, set the FIP timing on the dot, put in a fuel pump, Everything was spot on, nothing was amiss.
I completely rebuilt the turbo, sandblasted and ceramic coated the exhaust header and downpipe, new exhaust/intake gasket, etc. Still no change in performance.
Oil mist has been steadily blowing out of the dipstick tube. It couldn't have been much because I have not really been losing a noticeable amount of oil. Long term observation of the oil filler cap on the head while running has shown no pressure coming out the valvetrain. No pressure blowing out the cyclone. Still, the oil coming out of the dipstick tube was a little concerning.
Coolant leaks have been an issue on the truck for a while: mystery coolant loss, nothing amiss on the truck, so I just filled the coolant regularly. On the last wheeling truck up to BDO at the cove, I realized that faint steam was coming out from under the bonnet.
When I popped the bonnet, I found that the interface between the thermostat housing and the head was spraying coolant in a fine mist. Had to carry several gallons of distilled water with me on the remainder of the trip home, filling up the coolant along the way.
Took off the head, expecting the worst, actually found the head in good condition.
During removal of the head, some of the head bolts were not nearly as tight as others - these "loose" bolts were near the middle two cylinders of the head on the exhaust manifold side.
Looking at the headgasket, it looks like a bunch of stuff was traveling through the headgasket - coolant, oil, combustion gases - all just kind of leaking around when the engine was hot.
2 of the 8 valve lash caps had busted through the center.