Engine question

[SlowPro48]

So are you telling me that is backwards? If so then my VX has been backwards from the factory!

Not really "backwards"..... just.... different!

Backwards would be if you lined the cam sprockets up with their marks, took the old belt off, then turned the crank 180 degrees and installed the new belt. Now that would be a biggie. You lined everything up, took the old belt off, didn't move anything, and put the new belt back on - so cams and crank stayed in synch. None of the three components were moved and the number of teeth between each one stayed the same. Nothing changed as far as the engine knew. Nothing backwards about that. There obviously is a point in the rotation sequence where the cam sprockets and marks line up but the dotted line on the belt lines up 180 degrees from where it was first installed on the crank sprocket - otherwise what you did would not work. Or hey - maybe you're just benefiting from the VX's wasted spark ignition! Your #2 is now your #5! Nah just kidding!

Bottom line is you installed the belt with the crank turned 180 degrees from where Isuzu said it should be - but it still works - so no biggie! I doubt they did it one way at the factory and told us to do it another though. Just be glad it lines up both ways!

BTW, sorry for the confusion. I will attempt to clarify using proper Isuzu terminology. The "Alignment Mark on Timing Belt" (aka "dotted line") is suppsed to be lined up with the "Alignment Mark on Crankshaft Timing Pulley" (aka "green tick mark") which is 180 degrees from the "Groove on Crankshaft Pulley" (aka "notch") which is supposed to be lined up with the "Alignment Mark on Oil Pump" (aka "line on oil pump housing"). See image below.

[Buffy]

I will be ordering new everything later this week and am keeping my fingers crossed it fixes it. Until then I am cleaning the engine bay as best I can. It is already looking MUCH better than before. Going to order some rust encapsulator and chassis paint from Eastwood today and work on stopping the rust before it goes any further. Anyone have a favorite rust killer that they've had good results with??

[Ldub]

Anyone have a favorite rust killer that they've had good results with??

http://forum.planetisuzoo.com/viewto...ht=rust+bullet

There is more if you search "rust".

[nfpgasmask]

The "Alignment Mark on Timing Belt" (aka "dotted line") is suppsed to be lined up with the "Alignment Mark on Crankshaft Timing Pulley" (aka "green tick mark") which is 180 degrees from the "Groove on Crankshaft Pulley" (aka "notch") which is supposed to be lined up with the "Alignment Mark on Oil Pump" (aka "line on oil pump housing"). See image below.

OK yeah, this diagram shows it better. So how is it then that mine didn't line up that way? I mean, like you said, I removed the belt and put the new one on and I DID NOT turn anything while the old belt was off, so obviously I had no issues, same for Mark I am guessing. Is it possible that these reference marks are there for when you have the timing belt break and you need to get everything back right again? It's just weird to me, because when I turned the motor over by hand with the old belt on, the notch in the pulley always ended up at the 9:00 o'clock position when the LH Camshaft pulley and RH camshaft pulley were in the right spots....

Bart

[MSHardeman]

YEP, Bart, I followed your instructions and everything seems to be working for me too. When the left and right hand cam pulleys where lined up on their marks, the mark on the crank pulley was lined up with the mark on the engine and the notch on the pulley was 180 degrees away from that. Installed the new belt (Isuzu) with the marks on the cam pulleys lined up and the dotted line lined up with the notch on the crank (again 180 degrees from both the mark on the crank pulley and the engine case). I do remember reading something, somewhere on how to get your timing back if your belt broke and completely threw everything off, just can't remember where.

BTW, Bart, could you make some space in your PM box? Can't respond b/c it's full.

[nfpgasmask]

YEP, Bart, I followed your instructions and everything seems to be working for me too. When the left and right hand cam pulleys where lined up on their marks, the mark on the crank pulley was lined up with the mark on the engine and the notch on the pulley was 180 degrees away from that. Installed the new belt (Isuzu) with the marks on the cam pulleys lined up and the dotted line lined up with the notch on the crank (again 180 degrees from both the mark on the crank pulley and the engine case). I do remember reading something, somewhere on how to get your timing back if your belt broke and completely threw everything off, just can't remember where.

Yeah, I know the Isuzu video shows both the timing belt change if the timing is good and the timing belt change if the timing is broken. But yeah, what you described above is exactly how mine was.

BTW, Bart, could you make some space in your PM box? Can't respond b/c it's full.

Done, thanks.

Bart