‘Dark cloudy fuel or a jel­ly­like sub­stance in­di­cates diesel bug, so it’s time to look at an ad­di­tive’

Canal Boat - - Skin Tanks -

Tech­ni­cal Con­sul­tant WITHIN A WEEK or two I will be try­ing to re­move from my fuel tank all traces of wa­ter that has got in and made the en­vi­ron­ment more con­ducive to diesel bug growth.

I use a Pella oil ex­trac­tor to ‘vac­uum’ the bot­tom of my tank with spe­cial at­ten­tion to the low­est cor­ners, un­til I see clear bright fuel be­ing sucked out. You can also use a siphon or even a wet & dry vac­uum cleaner suit­ably mod­i­fied to ac­cept a small pipe.

If your tank has a drain plug, check the boat’s trim be­cause, in many cases, the wa­ter will be below the drain at the back of the tank.

Bright clear pink fuel is fine; cloudy pink in­di­cates pos­si­ble wa­ter con­tam­i­na­tion; dark cloudy fuel or any jelly-like sub­stance in­di­cates diesel bug so it is time to look at a bug killer ad­di­tive. I added a fuel conditioner at my last fill in the au­tumn which should help pre­cip­i­tate any wa­ter and also kill any bug.

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