Vehicle & Technical > Defender
200tdi won't start
ChrisW70:
It was early and I hadn't had much tea by that time :oops: :lol:
Axetamer:
Thats a good possibly Saffy, I was just saying that same thing to the missus, I've drained the coolant and will pull the timing cover off tomorrow and check the timing...I had to hose the driveway down tonight as I got antifreeze everywhere and underneath is too wet to lie in. Finding the arm is gonna be a ballache, It'll be sump off again if I can't find it I will have to pull the motor out, can't risk it happening again.
Has anybody a engine hoist I could borrow if necessary?
J.D.:
--- Quote from: Saffy on May 14, 2009, 10:34:52 ---
--- Quote from: Axetamer on May 14, 2009, 00:35:52 ---Been thinking about this, I reckon that the mysterious missing lift pump arm has picked up between the camshaft and the cam followers, causing the broken rocker arm and bent pushrods on 7 and 8. I'm gonna whip the engine apart tomorrow in situ ( weather dependant), and see if my theory is right. So its rad out, head off, vac pump and skew gear out along with the timing belt cover and odds and sods, pull followers and camshaft ...& whatever....see what damage has been done.............I'm also thinking pull the whole motor and recon..peace of mind...assuming a full recon( worst case senario) pistons, rings, all bearings, valves, pushrods, camshaft, skew gears, oilpump, seals etc, with no regrind/boring... with standard parts £350ish?
--- End quote ---
I am not an engine mechanic but have stripped a couple tdi's, I can easily imagine that the missing lift pump arm briefly locked the cam which cause the timing belt to jump, break or loose teeth and you get the classic bent rods/broken rockers. Is it possible that damage could just be restricted to replacing the bent rods and rocker, new timing belt, timing reset and retrieval of the loose arm. Cam/bearings,belt, bent rocker shaft, rocker shaft pillar mounts fixings may need close inspection. Would be interested in a professional opinion posted on this thread though.
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Its rare for a timing belt snapping on a TDi to do any more damage except bend the pushrods and snap a rocker or two. I would think that in this case it would be similar to the belt snapping. Time it up again, replace the pushrods, and the snapped rockers, adjust the tappets, and then refit the timing belt. Start the engine for a SHORT PERIOD OF TIME (there won't be any cooling on the engine), and just check it sounds right. The engine will be to run for a short period of time (30 seconds or so) with no cooling, just to check it runs fne and there are no horrible noises.
Then replace the timing belt cover and all the other gubbins.
Axetamer:
I think the problem may be obvious here, seems that crap has gone down the tensioner bolt and seized the tensioner solid, the belt was as slack as a whores dodah. I think that some additional rtf around the tensioner bolt may stop it happening again when rebuilt....still haven't found the arm
Saffy:
--- Quote from: Axetamer on May 15, 2009, 18:28:06 ---I think the problem may be obvious here, seems that crap has gone down the tensioner bolt and seized the tensioner solid, the belt was as slack as a whores dodah. I think that some additional rtf around the tensioner bolt may stop it happening again when rebuilt....still haven't found the arm
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YUCK! good advert for using wading plugs as any, plus one marked up for the camp that says always change the tensioner/idlers when doing the belt change (i.e full timing kit). You say you changed belt 500 miles ago and it looks like that [-X Might be good news for your engine anyway.
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