ScootDawg Forums - View Single Post

GrouchyOle'Man · 10-07-2017, 08:50 PM

Hi Roscoe Today I pulled the cylinder head to inspect the valves. They were OK, but the Timing Chain Guides were ragged and the Top one that is bolted in the crankcase was rubbing against the side of the chain; somewhat dislocated. I am aware of your suggestions. The engine may have suffered mis-timing as the automatic chain tensioner was pushing against the upper chain guide that was out of position. The chain itself is fine. This is a severely abused machine and every time I remove any part to inspect it...almost every part needs repair or replacement. For example...the O Ring on the Intake manifold was shrunken and dry rotted providing no sealing benefits whatsoever on the cylinder head. No bent valves, no broken timing chain; but severely worn and partially damaged chain guides along with a damaged drive belt were found on it today. The O Ring on the Intake manifold was suspect for quite some time. This is a 2014 scoot with many miles on it.

10-07-2017, 08:50 PM	#14
GrouchyOle'Man Join Date: Sep 2017 Location: NE Central Florida Posts: 37	Hi Roscoe Today I pulled the cylinder head to inspect the valves. They were OK, but the Timing Chain Guides were ragged and the Top one that is bolted in the crankcase was rubbing against the side of the chain; somewhat dislocated. I am aware of your suggestions. The engine may have suffered mis-timing as the automatic chain tensioner was pushing against the upper chain guide that was out of position. The chain itself is fine. This is a severely abused machine and every time I remove any part to inspect it...almost every part needs repair or replacement. For example...the O Ring on the Intake manifold was shrunken and dry rotted providing no sealing benefits whatsoever on the cylinder head. No bent valves, no broken timing chain; but severely worn and partially damaged chain guides along with a damaged drive belt were found on it today. The O Ring on the Intake manifold was suspect for quite some time. This is a 2014 scoot with many miles on it. Last edited by GrouchyOle'Man; 10-19-2017 at 08:15 AM.
	0