RidgeRunner13 wrote on 07/01/11 at 19:22:04: On a Savage running at or near WOT, there is not enough vacuum to the petcock to maintain maximum fuel flow, thus causing a lean condition & power loss. That is why before finally converting to the raptor petcock I ran the oem one in prime position. The last 2 Savages I've owned pulled my trailer & that combined with a strong headwind meant running near WOT a lot. Switching to 'prime' made an immediate difference.
But maybe that was just me....
I could also always tell when I was low on fuel just by the way the engine would sound slowing down.......
it would always 'pop' more.
& That makes sense,, ! & then Routy Said
What does manifold vacuum have to do w/ it,....not real sure, except that I know that if you back off WOT till you see at least 5 inches on a vacuum gauge, you are perdy safe as far as not having a meltdown
& I had no idea,, & I want a vac gauge on the pickup,, Since the speedo died, I have to use a GPS, so, Ive got a tach up on the dash, a GPS on the windshield, positioned to hang right next to the Tach,, So, now I need a vac gauge slipped in somewhere,, hmm,,, Howmi gonn do that in a sanitary manner? Ill hafta figure on that a while.
EDIT**
Thanks for the replies.
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