[Al Posts: 931 Status: Offline WWW]

That maybe a possibility that Ill have to have a look at.  They are marine grade fuel lines, but modern fuels seem very harsh on pretty much everything they come into contact with.

[Eric Yeoman Posts: 767 Status: Offline]

Hi Al, going by the appearance of that fuel lines exterior I'm wondering if that black gunk might be it's innards breaking down.  .

[Al Posts: 931 Status: Offline WWW]

I started the Marlin up to let it run for 10 mins or so, which is something I do every few weeks when it's not being used.  This time it started making a nasty noise, which initially sounded like the fan blades where hitting something, so I switch it off and checked the fan.  Everything was OK there, so I started it again & the noise was still there.  I noticed every time the the noise was there the exhaust tail pipe would twitch.  So it had to be a misfire.  Out with the spark plugs and sure enough one of the plugs was well black with soot.   A new pair of plugs fitted and engine running sweet again.


I also noticed that the inline fuel filter has some discolouring on the inside, so I have ordered two new fuel filters as well as 4 new spark plugs to keep as spares.  Once the new filter arrives I'll replace the current filter