Puch Maxi Moped Ticking Sound
A few weeks ago I noticed something ‘strange’. I don’t know if it has always been like this, but my attention got grabbed by a strange ticking sound.
I decided to ask around on instagram and facebook where many people (34 Puch owners) shared some great answers. I am pleased to share you the insights of their answers in this Puch Maxi Moped Ticking Sound post.
About The Ticking Sound
I can tell you how the ticking sound sounds like. Mine is only present when my engine got warmed up and can only be heard when in idle. If you want to check if you have the same ticking sound, checkout the video below.
A video of the ticking sound
What are the possible causes of the ticking sound?
CAUSE 1: YOUR CRANKSHAFT HAS SOME PLAY
How to solve: Check if your crankshaft has some play. If it has some play you might want to replace you crankshaft bearing. biggend or small-end.
How to check: Remove the spark plug, take a screw driver and gently press the screwdriver against the piston. If you feel some play, this is probably causing the ticking sound.
My case: No play has been identified, I believe my bearings are still fine.
CAUSE 2: YOUR PISTON IS HITTING THE CYLINDER HEAD
How to solve: use two base gaskets or a bigger one
My case: I tried it with double base gaskets as well as with a 1mm base gasket. It didn’t solve the ticking sound.
CAUSE 3: A RATTLING PISTON CAUSED BY A WRONG MIXTURE
How to solve? Always respect the 1:50 fuel-oil mixture ratio in case of two-stroke oil. In case of Triboron, respect the 1:100 Fuel-Triboron mixture
My case: I run on Triboron and definitely respected the 1:100 ratio. So I don’t think this is causing the ticking sound.
CAUSE 4: A BADLY ADJUSTED IGNITION / CARBURATOR OR AIR LEAKS
How to solve? adjust your carburator, spark plug and ignition accordingly and check for air leaks.
My case: I have adjusted my Puch Maxi quiet ok, so I don’t think that’s the cause. However, I did find an ear leak at my cylinder inlet so this could have been causing the issue. Unfortunately, after removing the air leak, the ticking sound was still present.
New in the world of Puch:
CAUSE 5: BADLY ADJUSTED IDLE SCREW (RPM TO HIGH)
How to solve? Adjust appropriately.
My case: My Puch Maxi was indeed running at higher RPM when in idle. I lowered it and indeed the ticking sound became less present. It didn’t entirely solve the ticking sound though…
CAUSE 6: WORN PISTON RINGS
How to solve? Check your piston rings. If the gaps of the piston rings are dirty or your piston has a brown colour after the ring area, you might want to replace your piston rings.
My case: I replaced my piston rings, but the ticking sound was still available.
CAUSE 7: DUDE RELAX, IT’S NORMAL. IT’S A PUCH MAXI
How to solve? You can’t and perhaps you just don’t need to. A Puch Maxi just makes a lot of sound and certainly in case you have used an Airsal cylinder.
My case: I agree, it’s a bit annoying if you pay to much attention to the ticking sound. But after checking all previous steps, I decided to just let it be and see what it does.
I do know the feeling, you just put your engine back together and then you start hearing things. But it might be normal, as long as you don’t have any other issues (damage to your piston, cylinder or any running issues) you can decide to just let it be (what I am going to do).
Have trust in your engine and if anything goes wrong, we’ll see how to fix that later. That’s what it’s all about when working on an old Puch mopeds.
Any questions or suggestions?
I hope that with this Puch Maxi Moped Ticking Sound post, I was able to either help you or to ease your mind. If you have any question or a suggestion you can always leave a comment and share your idea’s.