Borked Pseudo Mailed wrote:
>I have stored a Falcon with 4.0 MPEFI motor for
>several months. I have started it every two weeks
>in that time. Usually this was in the afternoon,
>when temperature was over 30 degrees.
>I had no problems.
>This morning, when temperature was abnormally cold,
>I started it and it was hard to start. Furthermore,
>it was misfiring on 1 cylinder for about a minute,
>then came good.
>My housemate, who is a chemist, said it is just
>that the volatile parts of the petrol have
>eva****ated over the months, and these are required
>to start a cold engine.
>Is this the reason?
Doubt it.
I'd suggest looking for signs of water in the fuel tank if the petrol
smells OK.
Anything less than 12 months under extreme temperature conditions
would be unlikely to have a significant effect on the fuel.... And,
unless it's contaminated in some way it'll normally work fine (start
and run) so long as it smells like normal petrol.
I buy some of my petrol in bulk. The storage tank which is vented to
atmosphere (unlike a modern car's fuel tank) only gets filled once or
twice a year. In spite of the inevitable losses due eva****ation I've
never had problems with it. I also live in the tropics, where the
average temperatures are higher than most.
For whatever reason, 2-stroke premix (petrol plus oil) goes off a lot
quicker than straight petrol (and doesn't smell right when it does).
--
John H
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