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V7 lll 2021 750cc - Valve Adjustment question /Intake keeps getting off specs.

B

Beavis

Just got it firing!
Joined
Mar 28, 2023
Messages
24
Location
Portugal
I have noticed that the manual says to start with the left cylinder , but does that matter?
 
Beavis said:
I have noticed that the manual says to start with the left cylinder , but does that matter?
Click to expand...
Not really. I prefer to start with the right. Then you don't have to rotate the engine that much to do the left. So long as you do each side at TDC of the compression stroke the results are correct.
 
Many thx for your reply. Just trying to eliminate all the causes that is making my left cylinder intake valve lash going of adjustment. Already replaced the pushrod , spring washers,adjuster and adjust the valves 5/7. My exhaust keeps the lash spec , my intake don't . Only few km and already going noisy , like something clacking. Always opening the gap. I'm getting nuts with this.
 
Beavis said:
My exhaust keeps the lash spec , my intake don't . Only few km and already going noisy , like something clacking. Always opening the gap. I'm getting nuts with this.
Click to expand...
Is it still in warranty? Regardless, a compression and leak down test are in order, then I’d have the oil analyzed.
 
GTM® said:
Is it still in warranty? Regardless, a compression and leak down test are in order, then I’d have the oil analyzed.
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Unfortunately isn't under warranty.

Already did a compression test and both sides are good. Compared results with my 2019 , and exactly the same.
 
Beavis said:
Unfortunately isn't under warranty.
Already did a compression test and both sides are good. Compared results with my 2019 , and exactly the same.
Click to expand...
OK, have the oil analyzed. Assume it's running OK? I don't want to spark fear for you.
 
Ok. Back up the bus please…

Your comments give me significant pause.

What values are we talking about here?

Please, what are the numbers you are talking about?
 
No, what did you set it at, and then what did you read it at, and what was the mileage difference between the two readings.

This is the information I am looking to evaluate for you.
 
scottmastrocinque said:
No, what did you set it at, and then what did you read it at, and what was the mileage difference between the two readings.

This is the information I am looking to evaluate for you.
Click to expand...
Well after only 10/20 milles , and ticking noise coming strong from left side , parked the bike overnight , the exhaust keeps the gap. The intake open up to 0.18mm/0.07
 
Wait, you are not riding it 10-20 miles then opening the valve cover and reading the value on the engine warm or hot are you!

Those readings are only done on a stone cold engine.

Also, you are rotating the engine to line up TDC on the second cylinder, correct?

You do not set them on both sides with the crankshaft in the same place, you do know this I hope?

You have to set TDC (compression stroke) on one side then adjust the valves, then the engine must be rotated to put the opposite cylinder at TDC on compression stroke.

You know this and did this correctly?

Trying to rule out what is actually going on.
 
scottmastrocinque said:
Wait, you are not riding it 10-20 miles then opening the valve cover and reading the value on the engine warm or hot are you!

Those readings are only done on a stone cold engine.
Click to expand...
Looks like he parked overnight then checked. I'm thinking an improper heat treatment on the cam or follower allowing excessive wear. If he can get an oil analysis done it may detect which part is having excessive wear.
 
scottmastrocinque said:
Wait, you are not riding it 10-20 miles then opening the valve cover and reading the value on the engine warm or hot are you!

Those readings are only done on a stone cold engine.

Also, you are rotating the engine to line up TDC on the second cylinder, correct?

You do not set them on both sides with the crankshaft in the same place, you do know this I hope?

You have to set TDC (compression stroke) on one side then adjust the valves, then the engine must be rotated to put the opposite cylinder at TDC on compression stroke.

You know this and did this correctly?

Trying to rule out what is actually going on.
Click to expand...
Yes no worries. I put on TDC the side I'm working . Intake open/close then bring the piston up. Check if there's rockers play. And I adjust them. Rotate the engine 3/4 times , TDC again , and check the gap again.
And yes , i only work on it absolutely Cold .
 
Beavis said:
Yes no worries. I put on TDC the side I'm working . Intake open/close then bring the piston up. Check if there's rockers play. And I adjust them. Rotate the engine 3/4 times , TDC again , and check the gap again.
And yes , i only work on it absolutely Cold .
Click to expand...
Time for you to seek a dealer. This just isn't normal behavior and indicative of a metallurgy issue.
 
Sound doesn't matter. Clearance is getting larger so components are wearing excessivly. Get it examined by a dealer and replace the bad part(s).
 
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