Timing Belt Broken...

[Triathlete]

Missfire after a timing belt replacement could be the timing belt is off a tooth or so.

[nfpgasmask]

Missfire after a timing belt replacement could be the timing belt is off a tooth or so.

x2. That's what I am thinking. Given the recent history and what you said, it could very easily be bad timing.

I did my timing belt and water pump and various pulleys myself, and it cost me $900 in parts. So don't feel too bad yet. I would get the the pulleys off and re-time the VX. There are several videos on how to do it and the shop manual is available on this forum. Also, see my how-to. You should be able to see if the timing is correct without pulling the belt off. Which will save you some work.

http://www.nofuture.com/myvx/how-tos/tb/tbelt.htm

Bart

[psychos2]

x2. That's what I am thinking. Given the recent history and what you said, it could very easily be bad timing.

I did my timing belt and water pump and various pulleys myself, and it cost me $900 in parts. So don't feel too bad yet. I would get the the pulleys off and re-time the VX. There are several videos on how to do it and the shop manual is available on this forum. Also, see my how-to. You should be able to see if the timing is correct without pulling the belt off. Which will save you some work.

http://www.nofuture.com/myvx/how-tos/tb/tbelt.htm

Bart

The how tos are people that have changed them without breaking the belt.He needs to have them follow the TSB as it shows the correct way to re time the cams. shawn

[nfpgasmask]

The how tos are people that have changed them without breaking the belt.He needs to have them follow the TSB as it shows the correct way to re time the cams. shawn

Yes, that is why I suggested the videos. There is a video somewhere showing how to re-time the belt. That would be the most help.

Bart

[psychos2]

Yes, that is why I suggested the videos. There is a video somewhere showing how to re-time the belt. That would be the most help.

Bart

In the link that you posted it shows how to replace the belt if it is not broken. In the tsb I posted it tells how to re time the cams if the belt is broken.You cannot just turn the cam to the mark and have it be in time.It tells you in the tsb that it can take up to 9 full turns to get the cam back in time.So he cannot check to see if it is in time without removing the belt. shawn

[nfpgasmask]

In the link that you posted it shows how to replace the belt if it is not broken. In the tsb I posted it tells how to re time the cams if the belt is broken.You cannot just turn the cam to the mark and have it be in time.It tells you in the tsb that it can take up to 9 full turns to get the cam back in time.So he cannot check to see if it is in time without removing the belt. shawn

OK, well, if he leaves the belt on and turns the crankshaft pulley, at every full turn the notches should line up. If they do not, then it is obvious the timing is off. That's all I was saying. It would just be a quick check. But you are right, if the timing is definitely off, you cannot re-time without removing the belt.

Bart

[psychos2]

OK, well, if he leaves the belt on and turns the crankshaft pulley, at every full turn the notches should line up. If they do not, then it is obvious the timing is off. That's all I was saying. It would just be a quick check. But you are right, if the timing is definitely off, you cannot re-time without removing the belt.

Bart

The notches can still be lined up and the timing off, that is the problem.If it can take up to 9 turns to get the cams in the correct spot than there are 9 possibilities per side. He cannot check the cam timing without removing the belt and turning the cams. If you look at the TSB and read the part about timing the cams you will understand what I mean. It is not like timing a single cam engine or even a twin cam engine There are 4 cams turned by 2 pulleys and with the differences in gear ratios it is more complicated than checking marks to see if they are lined up once the timing has been disturbed. shawn