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Fuel pump!.

I'd say your friend is right!.
15w-40 every time for high milage, it will get the most out of the engine..

Could be a lot of things, frist thing I'd check would be 2 see if there is a spark...

I had the same thing, just jump in the shower wash it, kind of go hard on it and you won't noitce it bust, Don't dry it wit a towel your using it will only spead- use some toilet paper are summit to...