Vehicle & Technical > Defender
2.5 TD running rough after re-build
Graham2:
I've got a feeling this is for 200 TDI engines
trickydicky:
checked it out and yes it is ITS A BLOODY GOOD JOB I DIDNT DO THET THEN
trickydicky:
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i am still eagerly awaiting to see if the pump thingy worked i take it it didnt then o well its back to the drawing board then
Graham2:
Right then, update time. I've been phoning round and everyone said it would be the distribution pump or the timing. Timing's perfect, so maybe the pump's duff, but why would it be if it was OK before the engine re-build? Next theory was that I might have bent some pushrods when I tightened down the rocker shaft. So, off came the rockers- all pushrods OK. Damn! Pushrods are only a couple of quid each, so it would have been a nice cheap fix, but no such luck... I then thought I might as well take the head off again and check for cracked pistons or head. When I took the silicon turbo to inlet manifold pipe off, I noticed diesel in the inlet manifold. With the manifold off I could see loads in there, and the exhaust manifold was oily and black on cylinders 2 and 3. It now looks that when the turbo boost diaphragm on the side of the distribution pump was knackered, it fed tons of fuel up the turbo boost pipe into the turbo. This then went into the bottom of the inlet manifold, and was being sucked into the chambers. There was obviously far to much fuel about to burn, hence all the white exhaust smoke! Maybe if I'd been able to let it run for ages with the new diaphragm installed, it would have burnt away, but with the amount of smoke it just wasn't an option. I hope that when the head's off tomorrow, I'll see 4 pristine, un-cracked pistons, but loads of excess fuel about and black sludge. Diesel has probably contaminated the engine oil, so that'll need changing, and the valves will need cleaning up, but fingers crossed that's all it'll be. Oh well, here's hoping...
piggysteve:
Good luck, at least you've found something.
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