As I continue my hunt for the source of my strange engine noise, I have dropped the sump and pulled the timing chain cover with hopes that I might find a potential cause of the noise… having pulled the head last winter and not finding anything significant.
Nothing really obviously amiss in the lower timing chain either, but since I’m here, I’m reassembling with new tensioner and guide etc…
what is quite disconcerting, and where I am looking for advice, is the new spring is way longer than the old one, and does not put the blade under enough tension as can be seen in these photos…
I refitted the original assembly to remind myself of how much tension it was under… a lot!
these are the two assemblies on the bench, the left new one with the much longer spring…
the old / original spring looks like it has been shortened at some time in it’s life…
new assembly installed, obviously lots of slack…
even the top guide does not stay in place with the new assembly!
so lots of questions!
- am I supposed to have to adjust the length of the spring when new?
- if so, how short / tight should it be? can it be too tight?
- maybe my old one was too tight due to its apparent custom length and that might be leading to my noise?
any experience or suggestions (other than going hydraulic, I’ve got these parts, I’d like to use them!) ?
I’m thinking of using the old spring with the new blade…