Ticking from engine

[lewisism]

Bike Model = : GT125P 2019

Hey folks,

 

I have a 2019 GT125P (black engine, carby). Unmolested aside from cosmetic changes, Blackwidow pipes and a Max Torque can. No engine work has been done, so completely stock in that aspect. Pic attached for reference.

 

 

It’s suffering with a ticking from somewhere that follows RPM. At first, I thought it was coming from the tank (as that’s where it’s loudest) and my suspect was the fuel pump. Had my more mechanically inclined brother have a listen and he’s certain that it’s the valves on both the front and rear cylinder.

 

I’m inclined to believe it could be valve clearances because while they have been done in my ownership but they’re about 2000 miles overdue (didn’t realise recommended interval is every 4k lol). Engine starts out occasionally by ticking really hard from the front cylinder from cold, goes away/quietens down after a minute of idle. The tick is constant and follows RPM. I haven’t noticed any performance losses since I first noticed it on Monday this week.

 

I don’t think it’s the cam chain tensioners as I’ve had a listen with a screwdriver and they sound the exact same, just engine noise. Marcel humoured my silly questions on FB and mentioned my clutch; I have checked that too. Basket looks okay, as do springs and individual plates. No change in sound when letting the clutch go/pulling it in.

 

I’m curious to know what other people think. I’m hesitant to set the valve clearances as I don’t trust myself, so it’ll be going to a garage if it needs that, but I’m happy to check them (on the front, can’t get tank off reliably where I am). That being said, I know what I’m doing with a spanner and a screwdriver so if it’s not a big job (other than clearances) I can probably do it myself.

'19 Carby Hyosung GT125P

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