Quote:
Originally Posted by Marchy
You may need to cycle a tank of it to take effect.
|
But that doesn't make sense to me, because the few times I've gotten a good tank of E10 that gave me no crickets, the change was almost immediate. I filled up with E10 from a Chevron station over in New Iberia, LA and
heard the crickets die when I cranked the car and the new gas hit the HPFP. The exact same thing happened again at a Marathon station in lower Alabama. If the problem is cavitation in the fuel, filling the car with a full tank of fuel that resists the cavitation problem should cause an immediate change as soon as the new fuel reaches the pump. The E0 produced no change whatsoever.
I am still convinced that ethanol has nothing to do with it, especially since some E85 users are still reporting that their crickets go away when they switch over. I still think it's the additive package. When you get ethanol-free gas, it's coming from a different distribution system from regular tier 1 gas, and I think it lacks the additives in the tier 1 gas that contribute to the cavitation.
And speaking of cavitation, if that's where the pressure behind the plunger in the HPFP drops low enough to pull gas bubbles out of the fuel, could that be eliminated mechanically by raising the pressure
behind the HPFP? I'm wondering if replacing the
other fuel pump with a higher flowing model might pump enough pressure into the HPFP that the cavitation doesn't happen. Is anybody here running an aftermarket fuel pump under the rear seat?