GT JTD Clutch Grinding/Rattle noise
Hi folks, bit of advice required please. Sorry for the long post.
I bought a 2008 JTD GT from a main dealer some months back; 100k miles on the clock. I was delighted with the condition of the car, many of the big money items had been looked after by the previous owner. It has a good history, including lots of work done by the dealer before selling; a new 'clutch kit' and 'clutch release bearing' being detailed in particular.
I'm used to TwinSparks so I always found the JTD a bit noisey; nothing out of the ordinary I thought. However last weekend, after a 20 mile motorway run in 6th gear, I pulled up to a set of lights to hear a pronounced grinding/rattling noise. Scared the crap out of me.
Continued the mile or so home listening carefully. Noise was present in neutral; but very faint, seemed to disappear with revs. Louder with the clutch pedal pushed in. Loudest with a gear engaged; any gear. Completely disappears once you let the clutch out in gear. From inside it sounds like a rattle, with vibrations though the pedal. Outside it sounds more like a grinding noise - like the friction plate isn't clearing.
It lasted over the weekend, then promptly disappeared on the morning I was going to ring the dealer! Been fine since.
So I'm wondering what this could be? Is it likely to become a problem; is it going to cost me big money? The clock is ticking down on the warranty so naturally I would prefer this was sorted at the dealer's expense not mine. If it's something I can't reproduce it's going to be hard to expect a dealer to investigate.
Or is this one more Alfa quirk that occurs from time to time, but isn't really a big deal?