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Old 04-27-2017, 04:15 PM   #24
SpudRider   SpudRider is offline
 
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Join Date: Jul 2008
Location: Idaho
Posts: 25,054
If you drop the engine for repairs, be sure to examine the O-ring which seals the intake manifold. Make sure this O-ring is not flattened, deformed, or torn, et cetera. Also, be sure this O-ring is installed when you tighten the intake manifold to the cylinder head.



This O-ring is a critical component which keeps dust from entering the cylinder head. Dust entering the cylinder head from either the intake manifold or air filter will eventually cause valve recession of the intake valves.

Once again, I recommend you keep your air filter well oiled, and clean. I use Belray Foam Air Filter Oil for the flat air filters in both my Zongshen motorcycles.

https://www.rockymountainatvmc.com/p...air+filter+oil

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Spud

"Never argue with an idiot. He will drag you down to his level, and beat you with experience." Mark Twain

2015 Zongshen ZS250GY-3 (RX3)
2006 Zongshen ZS200GY-2 (Sierra 200)
2005 Honda XR650L
2004 Honda CRF250X
1998 Kawasaki KDX220

Mods made to my Zongshen ZS200GY-2: http://www.chinariders.net/showthread.php?t=6894


 
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