gunnerthesnowman
Well-known member
Hi , my 2004 TDI timing belt stripped 6 inch's of the timing belt at the crank gear, how do I check to see if I have any bent valves? thanks for any and all help
Ohhh you have bent valves to be sure.
Pull the valve cover off and inspect the lifters as best you can if leaving the cam installed.
It would be better to pull the cam and inspect the lifters, any that show spider cracks are ones that have hit.
Your gonna have to pull the head......sorry.
?only way to tell is with a new belt installed try and rotate the engine by hand. if it goes over fully then try and start it. if it runs, well, motor on. probably won't. this is what you get for metinance negligence.
I was told that the timing belt was changed when I got the car 6 months ago.only way to tell is with a new belt installed try and rotate the engine by hand. if it goes over fully then try and start it. if it runs, well, motor on. probably won't. this is what you get for metinance negligence.
Yeah, the above advice makes no sense. With the belt stripped at the crank (especially) there is very little chance there were no (exhaust) valves touched during the "event". Have to make a very careful inspection of the lifters at a minimum. A valve(s) contacted is compromised and left in use will fail and eventually destroy the cylinder(s). The valve stems get compressed, not "bent" really, and while still usually run ok will fail.
Ever notice that almost every VW for sale (especially TDIs) always advertise the TB/WP/etc have been "recently" changed??I was told that the timing belt was changed when I got the car 6 months ago.
Of course you were; sellers always do that. Let's be real -- not having done it means the selling price is a thousand bucks less to anyone who knows what it costs to have same professionally done, and finding THAT out is a simple phone call to a local stealer.I was told that the timing belt was changed when I got the car 6 months ago.
You see enough of these cars and you see all kinds of installation atrocities. Could be that the tensioner was installed incorrectly, cheapo parts, you name it.I was told that the timing belt was changed when I got the car 6 months ago.
I was told that the timing belt was changed when I got the car 6 months ago.
Seems I have read here that valves into pistons means that shortly it will be valve head separation, and then 'more parts are needed time'. Not that I have taken one of these apart to do belt work, but 6" missing at the crank is more than enough to get quite far away from required 'valves miss pistons reliably' timing.
cheers,
Douglas
Sometimes, perhaps. Not often, usually. Now and then, every once in a while, someone gets a fortunate break.Just because the teeth are missing it does not mean that the cam/crank pulley slipped 6". Like I said, sometimes the belt can track without the teeth. There is a considerable wrap on both. The proof was that the lifters were not cracked...dodged a bullet.
Yes, often after a valve/piston "event" the compromised valve(s) fails and the valve head falls into the cylinder and wrecks the bore, head and whatever it can. Usually at that point the engine is considered scrap for parts. Sometimes it can take a while, perhaps 10k miles, perhaps 10 miles. Never know...Seems I have read here that valves into pistons means that shortly it will be valve head separation, and then 'more parts are needed time'. Not that I have taken one of these apart to do belt work, but 6" missing at the crank is more than enough to get quite far away from required 'valves miss pistons reliably' timing.
cheers,
Douglas