Hi all. Can any of you more experienced owners tell me if the reedvalve/intake manifolds are prone to leaking at all? I cant see anything obviously wrong with mine, but the erratic tickover I have on the 21 (sometimes it'll sit happily at 1500 rpm, othertimes it will sit at 3-3.5k when coming off the throttle - slides look to be returning fully) suggests an intake air leak to me (but If anyone has any other ideas please chip in). I'd like to discount an intake leak, before I start to think about crank seals so any pointers on this would be helpful. It would be nice to finally get the NSR running properly before the summer is over

Anyone know the price of a new intake manifold? If it's not too expensive, it might be worth simply replacing it to remove any doubt. I'm assuming all 21s use the same manifold? Anyone got the part No to hand? I sometimes have probs using the online manual.

Any other possible causes of an erratic tickover on a 21?

Cheers

Wb