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When stripping down the hydraulic tensioners, one thing I found was the amount of gunk on the pistons. it did not slide easily. Also there was some seriously black oil inside it. I have only done about 800 miles on the car and had done 3 full oil changes, two when I first got it about 300 miles apart, and another when I did the IMS
When I drained the sump the oil was clean but the oil that came out of the tensioner was black so the question is why. I can only think that the it is primed but oil does really flow through it.
In any case after I cleaned the tensioner with paraffin as to not kill the seals in side it now slides smoothly.
Of course I will be changing the guides for new ones and going to test the solenoid on the bench
BTW, important to know which tensioner is which as they have different solenoids. I bag everything in re-sealable sandwich bags that I label and only ever work with one bag at a time as to not mix things up
I'll take some photos to share when I strip and clean the second one
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