Hi folks, I have a 98 4Runner 2.7 that seems to go through bouts of water in the gas. I live in the south end of the Pacific rain forest so it is quite wet at home. I travel alot though. I got a tank of bad gas in Nevada a couple of months ago and gradually got rid of it by adding 91 percent isopropyl alcohol to the tank for a few fill ups. The symptoms are a brief sharp buck that may be stronger or weaker and mostly occurs for the first few miles of driving but it could show up anytime. We are in central AZ right now. We got the bucking again but the temps here are 20-30 at night. Most of the bucking went away when we started garaging the truck but we still get it a little.
Should I change the fuel filter? More alcohol? Take out the tank and dry it once and for all?
This has happened on my vehicles before. I use Chevron alternating with generic gas. Any ideas? TIA, Edy