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-   -   Engine noise (http://www.chinariders.net/showthread.php?t=20957)

georgiarider 04-08-2018 01:42 PM
Engine noise
 
IT does this rattling noise once it is warmed up and at a certain rpm anyone know what it is? Valves are adjusted

Heres a video

https://www.youtube.com/watch?v=gMq8Bkhy07g

georgiarider 04-09-2018 06:34 PM
Does noone know? I don't mind fixing it just would like ideas on what it could be.

Mudflap 04-09-2018 06:42 PM
Lousy speaker on my tablet so hard to tell. You say valves are adjusted but are you sure it was done right?

georgiarider 04-09-2018 06:47 PM
Quote:
Originally Posted by Mudflap (Post 276926)
Lousy speaker on my tablet so hard to tell. You say valves are adjusted but are you sure it was done right?
Yes I followed the guide posted on here done it 10 different times to make sure it was right.

FLASHLIGHTBOY 04-09-2018 10:48 PM
noise
 
check oil for metal.... was it ever changed to the 10-40 oil ??? that is a good start ..

Bruce's 04-09-2018 11:10 PM
Kind of sounds like the starter to me .

georgiarider 04-10-2018 07:18 AM
Quote:
Originally Posted by FLASHLIGHTBOY (Post 276935)
check oil for metal.... was it ever changed to the 10-40 oil ??? that is a good start ..
I changed the oil twice since I bought it i used 15w40 i haven't seen any metal in the oil

JerryHawk250 04-10-2018 08:00 AM
It sounds normal to me. All I heard is the normal taping of the valves.

georgiarider 04-10-2018 08:54 AM
Quote:
Originally Posted by JerryHawk250 (Post 276957)
It sounds normal to me. All I heard is the normal taping of the valves.
So there that loud in these motors? I have never heard valves as loud as the sound i hear from it i work on motors all the time but not air cooled pushrod engines.

JerryHawk250 04-10-2018 09:11 AM
Quote:
Originally Posted by georgiarider (Post 276959)
So there that loud in these motors? I have never heard valves as loud as the sound i hear from it i work on motors all the time but not air cooled pushrod engines.
Yes they will be a little noisy. What do you have them set at. I have mine set at .002" intake and .003" exhaust.

georgiarider 04-10-2018 09:41 AM
Quote:
Originally Posted by JerryHawk250 (Post 276964)
Yes they will be a little noisy. What do you have them set at. I have mine set at .002" intake and .003" exhaust.
There Both at 003

JerryHawk250 04-10-2018 10:01 AM
Quote:
Originally Posted by georgiarider (Post 276969)
There Both at 003
You will be good at that. When you stop hearing the tapping you will know it's time to adjust valves.

georgiarider 04-10-2018 10:08 AM
Quote:
Originally Posted by JerryHawk250 (Post 276974)
You will be good at that. When you stop hearing the tapping you will know it's time to adjust valves.
Is there a place to buy crankshafts for these engines in the event that something does go wrong it seems to be the only part I cant find?

JerryHawk250 04-10-2018 10:12 AM
Quote:
Originally Posted by georgiarider (Post 276976)
Is there a place to buy crankshafts for these engines in the event that something does go wrong it seems to be the only part I cant find?
You can usually find them on Ebay, Taobao.com and here. http://www.motopartsmax.com/index.ph...21/eID/8/tID/2
Just have to check measurements to make sure you are getting the right parts.

georgiarider 04-10-2018 10:15 AM
Quote:
Originally Posted by JerryHawk250 (Post 276979)
You can usually find them on Ebay, Taobao.com and here. http://www.motopartsmax.com/index.ph...21/eID/8/tID/2
Just have to check measurements to make sure you are getting the right parts.
Thank you for the link.


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