Seeps Weeps and Leaks

NoVa Rider · 09-18-2015, 10:57 AM

Minor story that would be better if illustrated with photos -- sorry I am photo challenged.

Had an issue with oil weeping from top of cylinder head. After a ride, oil would be slowly coming down around the cylinder head bolt just forward of the spark plug. Not enough to be too messy but something needed to be done. I determined it was coming from the top of the engine, not from the head bolt itself.

I removed the tank, and focused on two 10mm (head size) bolts on the top right side of the cylinder head, each with copper washers. I believe these bolts may secure the cam bearing, so I decided to deal with each one individually, and not unscrew both at the same time. I backed the bolts out about a 1/4 inch, and using the tip of an exacto knife, I applied some "blue goo" (Permatex Hylomar gasket dressing) on both sides of the copper washers. Then retightened the bolts. While I was at it, I also removed the exhaust valve adjustment cover and applied a bit of blue goo around the edge. I am fairly confident, however, the leak was not from the valve cover.

Problem seems to have been solved.

SpudRider · 09-18-2015, 03:40 PM

Thanks for informing us. I'm guessing the two bolts were not tightened properly at the factory.

detours · 09-18-2015, 04:30 PM

I love all the updates on individual issues. I don't have this one, but I learn so much about what could go wrong and how to fix or adjust them.

Riceburner · 09-18-2015, 04:57 PM

Thanks NoVa Rider for the info.

09-18-2015, 10:57 AM	#1
NoVa Rider Join Date: Jan 2015 Location: Northern Virginia Posts: 144	Seeps Weeps and Leaks Minor story that would be better if illustrated with photos -- sorry I am photo challenged. Had an issue with oil weeping from top of cylinder head. After a ride, oil would be slowly coming down around the cylinder head bolt just forward of the spark plug. Not enough to be too messy but something needed to be done. I determined it was coming from the top of the engine, not from the head bolt itself. I removed the tank, and focused on two 10mm (head size) bolts on the top right side of the cylinder head, each with copper washers. I believe these bolts may secure the cam bearing, so I decided to deal with each one individually, and not unscrew both at the same time. I backed the bolts out about a 1/4 inch, and using the tip of an exacto knife, I applied some "blue goo" (Permatex Hylomar gasket dressing) on both sides of the copper washers. Then retightened the bolts. While I was at it, I also removed the exhaust valve adjustment cover and applied a bit of blue goo around the edge. I am fairly confident, however, the leak was not from the valve cover. Problem seems to have been solved.
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09-18-2015, 03:40 PM	#2
SpudRider Join Date: Jul 2008 Location: Idaho Posts: 25,054	Thanks for informing us. I'm guessing the two bolts were not tightened properly at the factory. __________________ 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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09-18-2015, 04:30 PM	#3
detours Join Date: Sep 2014 Location: Arvada, CO Posts: 1,004	I love all the updates on individual issues. I don't have this one, but I learn so much about what could go wrong and how to fix or adjust them. __________________ Red 5 standing by! 2015 CSC red RX3 with 19" front wheel, Shinko 804/805, skid plate, tall seat, 13T/45T sprockets, progressive shock, Winyoochanok windshield, GENSSI LED headlight, SW-Motech tankbag, Shorai Lithium battery 2014 Ural Patrol
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09-18-2015, 04:57 PM	#4
Riceburner Join Date: Jul 2015 Location: Tigbauan, Iloilo City, Panay Island, Philippines Posts: 177	Thanks NoVa Rider for the info. __________________ Riceburner Robin / Face Hunter I Medical Mission Matters www.medicalmissionmatters.org
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