Question about 1992 Mazda MX-3

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Oil pump I'm looking to buy a  mazda that has been sitting for about a year and a bit and has not been started in that time frame. I was told that the oil would break down and turn to varnish and rot the oil pump because it's plastic. How long would it take the oil to breakdown and is this true about the oil pump being plastic. Thanks

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I agree with the other gentlemen on this, you were given false information.

Posted on Sep 02, 2008

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I think someone is pulling your leg, there is more chance of the pope going on holiday to the moon than there is any engine being fitted with a plastic oil pump and oil doesn't turn to varnish petrol/gasoline left for a very long times can (but not always) turn to a varnish like substance inside the fuel lines.
I restored old cars for a living for about twenty five years and I only ever saw fuel go like that once.
Whom ever told you that I think is a little confused, the fuel can sometimes go like varnish and fuel pumps do have plastic parts, but the chance of the plastic degrading and falling apart is nil to zero and the only thing the fuel might do is clog the pump.
Being a Mazda the actual manufacturer hasn't been in business long enough for one of their very first cars to be reaching a point where the fuel would have degraded.

Posted on Sep 02, 2008

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For starters any oil pump in any vehicle will never be made out of plastic(EVER) 2nd... if a vehicle sits for a year or more why take a chance with the fuel in it. all you have to do is drain the fuel out. change the fuel filter and prime the throttle body with a little bit of gas or starting fluid. i would also change the oil and filter. if the car is any good it will run fine. if it has a bit of rough idle or miss fires just a bit just change the plugs and maybe the rotor and cap this should take care of it. Who ever told you a oil pump is made plastic and get's degraded by oil after sitting is full of it.....please rate this..........thanks

Posted on Sep 02, 2008

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