fuel (unleaded)

Soldato
Joined
13 Jan 2004
Posts
12,772
Location
Leicestershire
how long until it goes off and the engine refuses to start nowadays? i remember it used to be months but i have a motobike with fuel in from last year and it still starts but how long have i got before it won't start?
 
When I was little, me and my grandad strapped a car dynamo and a Suffolk Colt lawnmover engine to a piece of plywood (looked pretty good actually!) to power the lights in a shed.

Anyway, about 3 years after we laid it up, it still started on the fuel in the tank... seems to last a while!
 
Surely it's dependent on contaminants? i.e. corroded metal (**** tank), that sort of thing, maybe impurities too - which aren't necessarily predictable?
 
My Anglia sat for over a year and it started and ran fine. Not sure what the fuss is about, especially since it's got sky high compression, twin carbs and a wild cam.

If you're really worried stick a few cans of fresh petrol in with the old stuff to 'dilute' it.

It's more likely to not start because the fuel has drained out the lines back into the tank.
 
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