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Chattering on idle, what is it?

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Chattering on idle, what is it?

Post  3hundredspartans on Tue 28 May - 16:21

Hi All,

I notice that when the T80 has been run and is at normal operating temperature, I can hear chattering coming from the gearbox area, I don't think it is the clearance of the valves and rocker arms.

Anyone know what it could be? Would like to know before stripping it.

Thanks, Frank.

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Re: Chattering on idle, what is it?

Post  Admin drgaz on Tue 28 May - 17:33

could be cam chain ,John will have more of an Idea,
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Re: Chattering on idle, what is it?

Post  JohnW on Wed 29 May - 0:47

@Admin drgaz wrote:could be cam chain ,John will have more of an Idea,
Yes looks like too much slack in cam chain. In my experiance you have to put a bit more pressure on the tensioner than the spring gives.
Remove sprocket cover
Remove tensioner spring cap
Slacken tensioner locking screw
Set cam in a position giving max chain slack & press spring & plunger in with finger
Tighten locking screw, refit cap & cover & job should be a gooden

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Re: Chattering on idle, what is it?

Post  3hundredspartans on Wed 29 May - 14:43

Thanks John,

I'll give that a go and see.

Cheers, Frank.

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Re: Chattering on idle, what is it?

Post  3hundredspartans on Wed 29 May - 23:43

Thanks heaps for the tip John, it did the trick.

It now sounds like it should, no chattering at all and it purrs like a kitten on idle.

Thanks again, Frank.

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Re: Chattering on idle, what is it?

Post  3hundredspartans on Wed 29 May - 23:47

Put new o rings, springs and gaskets and adjusted accordingly and now it idles just nicely.

At least it is alot better than it was and with a little more tuning, should be good as gold.

Cheers, Frank.

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Re: Chattering on idle, what is it?

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