What is the best / easiest way to drain out old gasoline from the gas tank of my 1988 200SX SE notchback coupe?
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Gas Tank draining
If you're completely draining the tank, I would drop the tank and re-seal it while you're at it.
Most people hear "drop the tank" and get bent out of shape, but it's not really a big deal. If you drain it, there's probably going to be a shit-ton of gunk chilling down there.
Foolishly (stupidly), I only recently refinished the underside of the car and applied a rubberized protective coat to the area around the tank. I would like to avoid dropping the tank. If there was alot of gunk within, would any of it show up in the fuel removed by siphoning - or would the siphon tube not be able to penetrate into the tank far enough to reach the gunk? in other words, could siphoning rule in or rule out the need to drop the tank?
Thank you for your help here/
either the crap on the bottom will stick to the tank or it will clog your siphon tube. your best bet is to drop it.
Unfortunately, I am between houses right now and have the car stored in one of those "storage farms". I can access it to start it up (which it does fine) and to try and siphon out gasoline but not to drop the tank until I am in my new home (being built).
Do you think i can siphon out an appreciable amount of the standing gasoline to make replacing it with new gasoline worthwhile?
u can pull the fuel line from the fuel filter, put line into gas can. turn key to on and let the pump do the work. thats how i got old gas out of mine.
Did you have any trouble getting a vacuum on the line that way?
Three options, Listed in ease of use
1:) Obviously, drill a hole.
2:)
A.Take off gas cap
B. remove pump line
C. replace with long line into gas can
D. turn on Fuel pump
E. Profit! (wait... no...)
3:) Vacuum Pump
if your worried about whether or not there is gunk in the gas tank you could try removing the pump and looking into the tank from the top with a flashlight into the tank to see if there is any crud at the bottom.