If the timing chain breaks on my 1996 ford Taurus will it bend the valves too?
268k and the motor started making a growling noises when starting from cold and when accelerating from 1st to 2nd. The car lost power while going down the road and starting making a loud growling noise. My local mechanic said he believes the valves were bent if the timing chain broke.
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xr6 is this a turbo"?
is car stock (original)?
the first is compression tests, at wide open throttle.
exact engine by whom not sure, but is this interference engine?>
chain, drive cams.
noise is never good, find it.
is this SOHC or DOHC, or tell exact motor name,
lets see if wiki does these cars.... its poor, cant even find real ford names for it.
for the BA-BF & FG XR6Turbo, ?
if this is a DOHC engine, say so first. as we never crank them
after noise, ever. we do a leak down tests. BY HAND.
if that fails , the valves are bent, and do not crank engine ever
until the bends are gone; "learn how to respect DOHC engines"
Sounds like you lost oil pressure and possibly the engine is shot due to losing pressure. It's possible the timing belt/chain broke. Even if this is this is the case, usually it requires valves replaced and head rebuilt/replaced.
When the timing chain breaks the cam quits turning. Any valves that are open, remain open.
If the motor is turned over trying to start it or bump starting it in gear, the pistons come up and
hit the open valves. Bent valves are common. If it is a 4 cylinder only a couple valves will be open
at a time so you may damage 2 or 4 (there are usually 2 per cylinder so a 4 cylinder has 8).
You could replace the chain, make sure the timing marks align with eahother and the chain but
just getting the cam and crankshaft to alignment could cause some damage. Good luck. I did
it to mine once. Bent 4 of the 8 and had to pull the head, sent to the machine shop and reassemble.
I tried to bump start mine down a 2 mile hill. Ohh well! It's fixable.
the yiming marks are on the cams and crank. the best way to do this if you never have done it before is to buy new chains and the will have links where you can math the timing marks on the sprockets to the chains. IMPORTANT!!!! make sure to rotate engine by hand from the crank to make sure the engine is in time!!! if you are off by one tooth you will bend a valve. this is a high interferance (the valves will hit pistons and break) motor.
Does the red fluid have a metalic look from little metal particles? If so, then it is time for a new or salvage yard pump. Not hard to tell. Just put something up against the pump and listen to that up to your ear. You will be able to tell of the pump is the source of the noise or not.
stop running it untill you get the chain fixed you will know when it breaks or slips as the motor will not run at all and will bend the valves this will require the motor to come apart and basicley be rebuilt -jeff