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Message: <blockquote data-quote="Fishfiles" data-source="post: 5890" data-attributes="member: 782"><p>What color is the smoke ?-----------the injector may be leaking down ( dripping ) into the cylinder when the engine is stopped and when you start up it is burning the excess off -------- you say you don't have oil consumption so I would not think it's the valve guides as this is another way it smokes on startup , when you kill the engine oil leaks past worn valve stem guides and seals into the cylinder or on to the top of the valve if closed , either way it smokes on start up , a bad nozzle tip will dump the fuel into the cylinder and not atomize it ( break it down to smaller particles ) into a vapor which in turn doesn't burn as efficently , the unburned fuel sticks to the walls of the cylinder and makes the cylinder , piston and rings very wet and dilutes the oil lubrication the walls which cause wear faster and I would think it would lower the compression a little being the diesel is not as thick as the oil , ever notice when you do a wet compression test the compression is higher when oiled ------------ on a seperate note I had a Chevy 350 in a truck that had some bad valve stem seals and was smoking heavy on start ups and using 2 quarts of oil per tank , I put some of that Rislone ring sealer in it and lowered the comsumption to 1 quart every two tanks to 3 tanks untill I found time to swop the heads about 2 years later , kinda like a bandage for a machette cut but will keep you in the game</p></blockquote><p></p>

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