timing belt jumped

[VehiGAZ]

Indiana - I have a suggestion for you based on what happened with my wife's old Passat...

See if you can get your mechanic to make the case to the warranty company that something other than the t-belt failed, and they may cover the work. The Passat's tensioner pulley assembly came apart and messed up the works. If the belt had broken, it was our responsibility, but since something else caused the belt to fail, it was all covered by her extended warranty - I only paid for them to put a new serpentine belt on when they put it back together... a $38 t-belt replacement!

Good luck!

[Tone]

I was wrong when I posted yesterday the 6VE1 was an Interference engine. I've checked with about a dozen engine publications online and they all agree concur it is a NON INTERFERENCE engine (most older Isuzu's were interference), except this site: http://autorepair.about.com/cs/doity...ming_belt3.htm

There have been several owners here who have had the belt fail and NOT had catastrophic engine failure. I was in no hurry to change mine for that very reason that if it failed, at least the valves and pistons wouldn't meet - BUT, a broken belt could sure do some damage.

[JAFO]

How was it that you noticed the timing belt jumped? Was the engine running funny? I'm assumming, that if it jumped that it through the timing out of sync?

Also I'm glad that they are covering it for you. When I had my Jeep Wrangler the company that I had wouldn't repair anything. Everything fell into the loop hole called "Wear Items" which was not covered.

[kpaske]

IndianaVX - I concur with Merlin, I think it was more than likely a worn tensioner that allowed the belt to skip in the first place, so you should most definitely replace it. However, if you're going to take everything apart, you might as well replace the belt (and possibly the water pump also). I personally did NOT replace my water pump because I couldn't really spare the extra $150 at the time, but normally I prefer to err on the side of caution. Either way, replace the belt and tensioner and you're good to go for another 75-100k miles. Replace only the tensioner and you'll just have to tear it down again in 36k miles.

A word of warning - Mark is 100% correct about NOT rotating the cam shafts once the belt has been removed. Much of the published information is incorrect, and if you follow the CD manual letter for letter, you'll screw up your timing and the cam shafts will need to be reindexed. I know because I made that mistake myself and wound up having to have a shop complete the job for me. There is a TSB that explains the issues, and the correct way to reindex your cam shafts. The shop that does the work should have access to this TSB, but I also have a copy somewhere. If you need it I'll dig it up for you (please PM me). In all likelihood they will need to do this reindexing, since your belt skipped and the timing is probably off now.

FWIW, I also concur with Tone - I am under the understanding that this motor is, in fact, NON-INTERFERENCE.

[Ldub]

kpaske,

If you do find the TSB on cam timing, how about forwarding it to Moncha to add to the download section.

That right there could be some handy information to have.

[Tobert]

Weird. I totally had my cams & stuff all out of whack and I don't remember having any particular trouble getting it all lined up. It was mostly a pain in the butt because the cams wanted to snap out of place due to valve spring pressure.

I followed the CD manual's procedure. Maybe I got lucky?

[kpaske]

Weird. I totally had my cams & stuff all out of whack and I don't remember having any particular trouble getting it all lined up. It was mostly a pain in the butt because the cams wanted to snap out of place due to valve spring pressure.

I followed the CD manual's procedure. Maybe I got lucky?

You must have. I did the job TWICE myself, using the CD manual, to the letter, and my timing was all screwed up. I took it to a nearby shop, and it took them THREE tries before finding that TSB and correcting the problem.

I'll try to find that TSB and get it posted here. It's a little oily, but it should scan OK to be readable.

[psychos2]

How was it that you noticed the timing belt jumped? Was the engine running funny? I'm assumming, that if it jumped that it through the timing out of sync?

The ignition timing would not be off. But the cam timing would be. shawn