I am changing the timing chain, and when I turn crank gets to a certain spot it comes to a dead stop. I have tried turning the cam a little at a time' but the crank still wont move. At first I thought that a valve was sticking, but I have to back the crank off to turn the cam all of the way around.
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Re: 3.1 tming chain
There are alignment marks on the timing set,and before you remove the old timing set,you must get cylinder number 1 in the firing order to Top Dead Center....then you can remove the old,and reinstall the new,timing set,but pay careful attention to the marks on each gear,in relationship to each other and where they line up.The new timing gear and chain set should have directions on where they are to line up,if not,you need to buy a Chilton manual for your specific car,as i don't have the specific information for your 3.1 engine.It sounds like your timing is WAY off,and when rotating the crank,a piston is hitting a valve...that means it's WAY out of phase...do not start the engine until resolved.The camshaft actuates the valves in relation to the crank and pistons' position,and when the valves open or close is VERY important for the engine to run properly,this is what i'm talking about (phased in) correctly.
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Timing belt or chain? If you have chain align the dark mark of the chain to gear marks and release the tentioner . after you turn one time the mark wont match to the chain for long time.
if you have belt. the marks are on the dots on the head and block and will match every second turn on crankshaft
after you install belt/chain turn with hand ,don't start till you're sure the piston don't touch the valve .
with chain you can mark a dot on the block and head with marker to see if will come back to the same spot on same time crank and cam but is not accurate .
check your timing chain its probably broken. diesels have no spark plugs and uses compression ignition and uses a lot of battery charge to turn it over. thats why it sounded like it was dead. if the chain brakes the upper and lower cam and crank shafts aren't in time together so you get no compression ignition. sorry for your troubles and hope i helped
okay first you make sure the timing marks on the pullys or gears are lineing up also you find #1 cylinder pull out spark plug place a long phillips head scew driver into the hole turn the main crank it should rise and fall get the lower part of the engine to where the scew driver stops rising and right before it falls you should be at top dead center on the lower part of the engine. turn the cam shaft till the timing mark on the pully or gear is at top dead center (TDC). but you should have timing marks on the crank shaft pully and the cam shaft gear or pully I recomend a chiltons or haynes manual so you can locate these marks.
if you mean the timing chain then on your crank gear and your cam gear there will be a mark on each sometimes they look like a dot the dots need to look like this for perfect timing ( . . ) this will be there closest position. Your crank turns once all the way around (360 degree) and your cam gear will do two complete revolutions to the one of the crank gear. so when you set your marks as above when you turn the crank one half turn the mark on the crank gear will be at the bottom and at the same time your cam gear will have made one complete revolution, so when you turn the crank another half turn your cam would have turned again a complete revolution and the two marks should be at their closet point again.
That engine does not have a timing belt, it has a timing chain and therefore much easier to work with as it can only go on a certain way, the primary focus being getting the dots on the timing chain sprockets lined up properly.
I believe, with the engine at Top Dead Center on cylinder #1, the dots will be facing each other. That is to say, the do on the cam sprocket will be facing the dot on the crank sprocket.
This starting issue sounds like either the ignition timing is way off, or the cam timing is, the whinning sounds like the timing chain may have been replaced with a non silent type chain (plastic cam gear teeth), maybe the onwer got this wrong when he installed it and the cam timing is off.
Rotate the cam on position and move the crank where it needs to be and rotate the cam back where it should be. This way you're getting the valve out of the way so you can get the piston where it needs to be.