
Originally Posted by
PeteLyons
Hi guys, I've got a question from way over in Canada.
I recently purchased a 1986 VFR400r (NC21) with aprox 13000 kms on the odo.
The bike is in great shape all original parts, paint, and runs great. But I do have a couple issues with it, and I'm not too sure whats going on. I've looked on the net, but info on the NC21 is sparse at best.
Problem 1: The bike wont idle when cold. It just dies out. It will idle fine once warmed up to operating temp. I've adjusted the idle screw when cold, and that fixed the idle issue, but as soon as the bike warms up, it idles at about 3k. I'm guessing its simply a carb issue, but not too sure what (out of sync, jets clogged ???)
Problem 2: This one might be worse. When the bike is cold, the engine sounds just peachy, but once it warms up, there is a ticking noise coming from the top end, sorta like a ticka-ticka-ticka. Now this only happens when the bike is warm, and seems to be in sync with the rpms, so it speeds up when reving higher. But it does not noticably get louder when revving higher, the intensity is quite steady.
Anyways, I hope I've described enough detail here, if you need more info, let me know, and thanks in advance.
Pete from Canada.
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