Timing Valves on GCV 160

[dunoon2]

Well I got the intake valve to seat. I sprayed inside the hole where the carb fits with PB Blaster and tapped the valve stem a couple dozen times with a hammer, good compression. Next question what is the valve clearance for the intake valve? If I worked on many Hondas I'd invest in a service manual but, I only get a dozen or so a year and 99.9%of the time it's a carb problem. Thanks again for all the comments.

[KE4AVB]

You probably can get by with a shop manual instead a full service manual for the basic info and they are free. Look in the Downloads forum for the link.

IN .006 +/- .002
EX .008 +/- .002

[Mek-a-nik]

You can google stuff like valve clearances. Usually takes you to Oudoorpowerequipment.com.

I guess you're saying that the intake was stuck. Not that uncommon. Wouldn't hurt to Seafooam the oil and change it a couple times.

[dunoon2]

Well that done the trick. After putting it back together, a couple pulls and it ran fine. Thanks for the suggestions greatly appreciated.

[Skywatcher]

Hi Dunoon

This problem is a direct result of using old/stale gasoline. The fuel has started to deteriorate and varnish condenses onto the intake valve stem eventually sticking the valve in the guide. The cam and rocker can open the valve but the spring doesn't have enough force to close the valve. The valve will be partially closed by the piston, but will not seat. Instruct your customer about the importance of using good quality, fresh fuel with stabilizer on all his small equipment. All the best,

Sky