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cam chain slack and adjuster

Spiff

Spiff

Forum Mentor
I feel there is something wrong with my gsx1100es engine, it's making more mechanical noise than my 750 and when listening around with a screw driver I find the noise to be strongest at the top of the engine near the center of it. It's a rattling noise, kinda like valves except I have adjusted all of them so they're up to spec.

I'm wondering if the adjuster isn't doing it's job and can it be removed from the engine without the chain falling of a tooth or something so I can check it?

Can the chain be measured for stretch whitout removing it from the engine?

Anything else I should look into?
 
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It is surprisingly common for the adjuster to be installed incorrectly. You can verify proper installation without dismantling anything. Look in from the left side, below the carbs, you will see a set screw and lock nut on the left side of the tensioner. Loosen the locknut (about 1/2 turn), hold it in place, turn the set screw in until it stops (it should not be far). Turn the set screw out 1/4 to 1/2 turn, hold it in place, tighten the lock nut.

Should you find the need to remove the tensioner, you might find it easier if you remove the carbs first.

To check for chain stretch, you might be able to see enough links across the top, between the two sprockets. Remove the valve cover and measure the chain, compare your measurement to the specs in the manual.

.
 
Check the function of the cam chain tensioner. As the engine idles, turn the big knob on the right side of the tensioner A LITTLE BIT counterclockwise while listening to the engine.
Talking 1/8 of a turn or less. If the engine sound changes, stop. Let go of the knob. If it turns back clockwise and the sound goes back to what it was, it's functioning correctly.

If you turn the knob very far without paying attention to the sound, SERIOUS ENGINE DAMAGE will occur. Death, destruction, the burning of virgin dollars, and other maladies will be occuring inside your engine so just turn it A LITTLE BIT.
 
I'm also having some (quite a lot :-k) top end noise supposedly coming from the cam chain I need to look after. On my 750 it only occurs when the engine is hot though. Is this also the case with your bike or does it occur right after you've started it?
 
I haven't heard a cam chain act like that. Only hearing it hot sounds like something else. Could possibly be the tensioner is locked down or stuck, dunno.
 
berm said:
I'm also having some (quite a lot :-k) top end noise supposedly coming from the cam chain I need to look after. On my 750 it only occurs when the engine is hot though. Is this also the case with your bike or does it occur right after you've started it?
Click to expand...

No, on mine the noise is there regardless of the engine being hot or cold.
 
If the tensioner is not locked, and does not seem to be functioning correctly as noted above, it's time to replace the seals

They could be hard and not allowing the tensioner rod to move freely
 
thanks for the help guys, I checked the tensioner today and it was locked. I loosened it and hopefully it will be noise free when i get the exhaust back on and fire her up tomorrow.
I don't know how long it has been locked like that and if any damage might have ocurred because of it being like that, what do you guys think? Should I be worried?
 
Youre good...now adjust it correctly. Turn the adjuster screw in till it touches off on the rod. back off 1/4 turn and lock down the jamming nut.
 
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