A local gas station pump malfunction and pumped alocohol base fuel in our car. We drove about 20 miles before it started skipping and would not go over 3500 rpm's. What is the best way to drain the tank and am I looking at any possible dammage?
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Re: 1999 volvo v70 xc gas tank
Option 1 the easiest way is to jump the fuel pump relay with the fuel feed line at the engine disconnected from the engine and connected to some sort of catch basin (bucket, gas can, etc.) this allows you to use the vehicles fuel pump to drain the fuel. All you have to do is find the fuel pump relay, then jump the positive side (key off) to power to make the fuel pump run, use that to pump all the bad fuel out.
Option 2 is to remove the filler neck and check valve from the tank (a real pain on that car)
Option 3 is to remove and drain the tank... this is the most costly and time consuming option as the alldata labor guide quotes 8 hours labor time.. so i would advise option 1
As for damage to the vehicle/engine that is always possible with a contaminated fuel, my advice would be just to get the bad fuel out as soon as possible, get good gas in it and give it a try.
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change your fuel filter ..your vehicle will run but your fuel pressure is weak ..also after this clean your fuel injectors by pouring injection cleaner in your gas ,,it will correct itself..Also ,,if none of what I stated works ,,Spark plugs and new spark plug wires needed ,,Lastly your fuel pump
your fuel filter, injectors and fuel regulator should all be checked-these clowns (sorry, mechanics) should have checked line pressure FIRST, and I might have suggested that the fuel tank be removed and cleaned after it failed the first time-n telling what is in the lines, and injectors are easy to clog. Since this is an older car, and more difficult to diagnose, it might be a good idea to look for a Volvo specialist that will diagnose the problem rather than throw parts at it.
Your gauge is reading high ... I think you are out of gas. You should calculate your actual Miles Per Gallon - find out what the capacity of your tank is and fill accordingly. For esample, you actually get 15 miles per gallon, your tank is 20 gallons - you should be able to drive about 300 miles between fillups. At 250 miles, start looking for a station.
I had the same problem with a 1989 Volvo 740 GLE station wagon. I did the same thing you did. But this time I talked to the local Independent Volvo service shop, not the dealer. The problem turn out to a bad fuel pump in the gas tank. You can replace it from inside the back of the station wagon. Just remove the floor panel to access the top of the fuel tank. But before you do; note that there are two fuel pumps, one inline underneath the car on the drivers side, and the one inside the gas tank. Before, you replace any of the fuel pumps check the fuel pump relay behind the astray on the left side. It could also be a bad relay.
Good luck. It sits on top of the fuel tank. You have to drop the fuel tank, which involves removing the rear subframe and most of the AWD suspension and driveline components. A very good mechanic with the right tools and that has done it before will be able to do it in around 8 hours of labor. It is an expensive part and very labor intensive to replace.
If the fuel gauge drops off when you are driving then its a sending unit problem that means you have to drop the tank and replace the float and sending unit. This is a common problem for alot of cars because of cheap gas. If you have to drop the tank check the fuel pump canster for dirt because of cheap gas. Replace the fuel pump strainer and fuel pump filter. If the car or truck has about 100,000 miles you might want to change the fuel pump at that time also just to cover your back. If you take it to a shop they will charge you at least $900 to start. But if you do it yourself it will cost you about $200 dollars maybe alittle more.
The fuel filter can be located under the carpeted cargo storage floor at the rear of the wagon. Remove the four 10mm bolts, remove the cover. You will then see a removeable plate to the right just behind the rear passenger seat. Fuel filter can be seen through hole in hole. Replaced from underneath wagon. Be sure to make sure lines are fully inserted onto filter. Check for leaks. No smoking, extinguisher handy. Note arrow on filter for correct fuel flow.
Your fuel pump is sticking and not pumping, this is common if you run the fuel down to less than 1/4 full, the fuel pump needs the gas to cool itself, below a 1/4 tank the pump is not getting cooled and after repeatably running low on fuel it overheats and fails. Running the car near 1/2 tank extends the pump life to many years more than running tank below a 1/4 full..