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Old 08-06-2011, 03:30 PM
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Sigma.40
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Default Savage half tank EXTREME lean problem.

People are probably getting tired of my Savage tuning questions but I don't trust my LHS guy and I have no one else to ask so I am sorry . Here we go:

I thought that I had my Savage 4.6 dialed in but I am questioning that now. I ran it today in a dirt field with 5-8ft tall dirt piles. As alwaysthe first half tank was perfect. Power was great and my temps were 237F. At 1/2 tank the truck wants to shut off. After I restarted it, I continued running it. It still had the same amount of power but when I went through the 2nd 1/2 tank my temps were 317F. I know about the half tank lean problem, but that seems extreme. I never hit WOT (mostly 1/2 to 3/4 throttle) and there was always some amount of blue smoke. My questions are:

-What should I do if the 1st half tank is perfect but the 2nd half tank is very lean?

-Why does the truck almost alwaysshut off at exactly 1/2 tank?

-Is it likely that I damaged the engine by hitting 317F?

As always, thanks in advance!