Was driving on the highway at about 50mph when the truck suddenly lost power and started running on 3 cylinders or so it appears. No strange noises or anything. At Idle, its realy rough and appears to be running only on 3 cylinders. ITs also smoking a lot even at Idle.
What color is the exhaust? You don't put many miles on, but how often do you replace the fuel filter. I've had fuel problems show up remarkably quickly - i.e. the truck is running fine and within 20 miles it needs the filter replaced.
Ok... here is what I found so far. Number 1 injector/cylinder is not firing. I cracked the lines while at idle and the first one had no effect on the engine. The other 3 when cracked caused a major drop in the idle. Other then that, it seems to be running smooth just on the 3 cylinders so I dont think its the belt at all.
This is the engine in my dads truck. He uses it every day. But it only has about 3k on it since the rebuild. My guess would be the injector. Should I remove it? what should I look for?
Follow-up Post:
I have never had water of fuel problems before and I dont run any additive by the way
No offense meant. I was typing at the same time you were Jim. I actually appreciated your input, as I was just wondering when I changed my filter last.
You would need to take the injector to diesel specialist to test it. I would certainly recomend running a diesel additive, especially in winter. Optilube XPD is the shizzle of them all, DM runs it as well as I and I constantly get comments about how my engine does not smoke or smell. Helps cold starts and water dispersion too.
Have you whipped the rocker cover off? could be a broken rocker, or one of the valve caps fallen off, giving massive valve clearance on that cylinder and not combusting properly?
quite often a slide hammer will help a lot. Get a nut that fits the injector thread (300Tdi's are M16 if i remember right, so the 200's should be similar) then i welded that nut, to another nut that fitted my slide hammer, they came out a treat then.
glad you found the problem. when you get the new one installed turn the engine over by hand at least twice to make sure everything is moving correctly.
TDI Guy said:
Just took the rocker cover off... Found the problem. Had a broken rocker adjuster screw. Was very lucky. the parts were just sitting in there.
Cool, glad it wasn't anything too sinister. without checking microcat (my PC has crashed funnily at the moment and i can't boot up MC, i think it might be ERC9054 (this is the 4 cylinder NA and TD version... Tdi may be the same)
before you refit it all, just try pushing the top of that valve down, make sure it's free to move, just in case the timimng gear had jumped a tooth and the piston smacked the valve up, causing the breakage.
Hopefully it was just a crap made part, that's all!
I have heard from a couple folks about valves sticking in the valve guide. So check for smooth operation of the valve as well.
Jim P
diesel_jim said:
Cool, glad it wasn't anything too sinister. without checking microcat (my PC has crashed funnily at the moment and i can't boot up MC, i think it might be ERC9054 (this is the 4 cylinder NA and TD version... Tdi may be the same)
before you refit it all, just try pushing the top of that valve down, make sure it's free to move, just in case the timimng gear had jumped a tooth and the piston smacked the valve up, causing the breakage.
Hopefully it was just a crap made part, that's all!
The valve cap was sitting right next to the valve. Ordered a new part. should have it by friday. The valve seams to move fine Once I install it, I will crank the engine by hand to check everything though.
Thanks everyone so far. Nothing like some quick pointers to get the ball rolling and help figure out the problem. this site ROCKS...
The valve cap was sitting right next to the valve. Ordered a new part. should have it by friday. The valve seams to move fine Once I install it, I will crank the engine by hand to check everything though.
Thanks everyone so far. Nothing like some quick pointers to get the ball rolling and help figure out the problem. this site ROCKS...
Must have been an intake valve, I have seen that happen with an exhaust valve and you would have been describing an entirely different noise
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