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  • avatar karjunkie 07/08/10 11:17 am PST

    You do not need to start the car to check the compression. Do that with a compression gauge you can get for about $40 at any auto store. Any car that sat for 5 years is probably not going to start for many reasons other than bad gas. Remember that any car that was parked for 5 years probably already had a mechanical problem that led to it being parked. As others said, whatever old gas is in the tank is going to be bad and should not be used. If you want to try and start this car, you need to drain most of the old gas and refill it with fresh gas. You'll need to syphon most of the gas into one empty container and have a one or two gallon container of fresh gas ready. As long as you get most of the old stuff out, the new gas will dilute whatever remains so it is usable. You'll also need jumper cables or a new battery to turn the engine. BEFORE you turn the engine, check the oil and coolant levels because if you start it and break it you bought it!

Answers

  • morin2 07/08/10 7:46 am PST

    Modern gasoline can last for up to about 6-8 weeks without any additional treatment. For long term storage like you describe, all gasoline should have been drained. For storage of up to a year, maybe two at the very most, you can treat gasoline with a fuel stabilizer such as Stabil. The best ones indicate that they are for fuel with added ethanol - such as the marine formula Stabil for ethanol treated fuels (99% of all gas sold in the US has 10% ethanol - which attracts water). This is what boaters do when they store their boats over the winter.

    Operators of higher rev small engines do not trust gasoline for more than a month - such as pro loggers with their bigger Stihl chainsaws, even when fuel stabilizer is part of the two-stroke oil additive package.

  • texases 07/08/10 10:51 am PST

    At 5 years you can count on problems (anything over a 6 months is an issue). It'll have to have the entire fuel system drained and flushed, do NOT try to start it. Even after you do that there may be problems with the fuel injection system.

  • karjunkie 07/08/10 11:17 am PST

    You do not need to start the car to check the compression. Do that with a compression gauge you can get for about $40 at any auto store. Any car that sat for 5 years is probably not going to start for many reasons other than bad gas. Remember that any car that was parked for 5 years probably already had a mechanical problem that led to it being parked. As others said, whatever old gas is in the tank is going to be bad and should not be used. If you want to try and start this car, you need to drain most of the old gas and refill it with fresh gas. You'll need to syphon most of the gas into one empty container and have a one or two gallon container of fresh gas ready. As long as you get most of the old stuff out, the new gas will dilute whatever remains so it is usable. You'll also need jumper cables or a new battery to turn the engine. BEFORE you turn the engine, check the oil and coolant levels because if you start it and break it you bought it!

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