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From: Sacramento, CA Money can't buy happiness - but it's more comfortable to cry in a Corvette than a Yugo.
Re: L98 Fuel Pump Replacement (geezel)
If you shine a flashlight into the tank while the assembly is out you may see what looks like a darker colored layer at the bottom crease of the tank. That is condensation/water/contamination. With a small plastic hose you can syphon that crud out of the tank real easily. As already said, it doesn't matter the fuel level when you do this, although more fuel in the tank makes the syphoning faster (if you even need to do it).
Actually, the more full the tank, the safer. It is the vapors that explode. A more fill tank has less air space for the vapors. With a full tank, the resultant fire will last longer, due to the greater supply of fuel, but the explosion will be less severe. Does THAT make you feel any better???