V6 crankshaft pulley dilemma
My 2001 GTV has just had a cambelt service. When it came back i noticed a slight rattle under load at low revs. I assumed it was a cover or heat shield that had not been quite correcty replaced, was not overly concerned and had a poke around myself to see if i could track it down. Everything appeared fine but i did notice that at tickover the crankshaft pulley seemed ever so slightly eccentric - but wasn't sure if it was an optical illusion due to a bit of dirt on the pulley. I mentioned the noise to the garage and they insisted that they had the car back to track the noise down, not wanting to leave anything to chance after the cambelt change. Good attitude.
After much investigation they reckon the noise is from one of the new tensioners, so that is being replaced. The dilemma is that they agree the crankshaft pulley is very slightly eccentric - but should I have it replaced too? They are actually a metal and rubber construction in order to damp out vibration and - hold on to your hats - seem to be no longer in production or available. My garage has tracked one down but it is the best part of £300! It should be a no-brainer as it wil be fitted for free but it is £300 I really haven't budgeted for - austerity & all that ... And I just wonder if, actually, they are all like that? I assume at temperature that the rubber softens slightly and at higher revs it possibly centres itself, so do I really have a problem?
Thoughts from any of you out there who know about these things will be most welcome.