Re: Hard starting I 340

Posted by captaink on November 17, 2005 at 06:57:26 from (66.115.214.56):

In Reply to: Re: Hard starting I 340 posted by doug in Wi on November 17, 2005 at 05:43:17:

I'm not sure if it is in the owners manual or not, but it would be in a shop manual for sure. To set the valve gap all you have to do is take off the valve cover.

The valve gap is measured between the rocker arm and the valve stem when the piston in that cylinder is a top dead center on the compression cycle. (Take out the spark plugs, put your thumb over the spark plug hole and turn the engine slowly. When you feel air push past, put a piece of stiff wire in the hole and when it stops moving out, the piston is at top dead center.) There was some discussion on the board yesterday about what temperature the engine should be to set valves. My opinion is if the shop manual says hot, then it should be done after the engine is thoroughly warmed up and done with it as close to operating temp as possible. If the spec says warm, then set them with the engine at some comfortable temp above freezing.

Hope this helps.

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