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Upon initial start up does it crank for a while or does it fire right up?

Now when you say "Either way when both rockers are loose for a given cylinder, that injector should be closed fully" do you mean the injector is pushed all the way down? Is the injector considered to be open when the rocker is not pushing down on it and then closed when it is pushed down? I'm...

Well I went to adjust the injectors last night using the method described in the Nhc250 valve injector overhead adjusting thread. Once I rolled the motor over so that the pointer aligned with 1-6 VS on the pulley I found that the number 1 injector rocker was not down into the injector. So I came...

I just read that forum and yes it does help! Hopefully some adjustment will cure all my problems!

After reading the service manual, I noticed there are two different torque specs for adjusting the injector depending if the injector is a top stop or not. Being that the truck is a 1971 I am assuming that my motor does not have top stop injectors?? Thanks for all the help!

yes the smoke smells like fuel and will make your eyes water and will also get you dirty looks as you smoke people out!!!:driver:

yes I plan on fixing the problem before driving the truck too much. Just curious if anybody else has had the similar problem.

White smoke also means raw fuel that inst being burnt correct? Almost any diesel smokes white when first being started because of the cold temp of the motor and fuel not being burnt completely? You can definitely smell the raw fuel as well.

Just got the M817 home to find out that it smokes a lot!! The engine runs good, lots of power, starts right up. When the truck is idling white smoke pours out of the exhaust no matter wether the engine is cold or has been running for an hour! Once the engine has a load on it the smoke turns...