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Hello everyone,
I recently bought myself a low mileage, well maintained '98 XK8 and I'm doing a general overhaul.
I've done the whole timing in the past on my x308 but I am having a bit of a puzzle with this one.
An upgraded timing kit is already installed and from the car's history it looks like it only covered a couple thousand miles.
However both primary and secondary chain on one bank seem a bit loose in some positions and perfectly fine in others while turning the crank. Could this be because of a already stretched chain or is it just due to no oil pressure in the tensioners? Chains on the left bank look tight with no slack, so it makes me wonder if a whole timing job is a wise thing to do while being already there.
This seems to be a completely wild suggestion ..... but is that chain tensioner installed upside down? Try to pull the plastic runner up to meet the chain and if it doesn't move then it is upside down. If that is the case, it is one the most ham-fisted repairs I have ever seen in 55 years of spannering. You really need to replace the lot as God knows what else they have ruined.