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Old 23 September 2016, 15:51   #11
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If you saw the state of the fuel coming out of mine you would want to clean it too!!
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Old 23 September 2016, 16:05   #12
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Originally Posted by mikew4 View Post
As in, why would you need to clean a fuel tank? Fuel filters are consumables.
If boats were cars we'd all be richer.

To some degree, I agree with your unspoken argument - "tanks are tanks, fuel is fuel, engines are engines". But the realities of seasonal boating are that tanks are unused for seven months and waterside fueling stations are low volume. The result is water in tanks, debris and biological contamination in fuel supplies. Tanks can and do become heavily contaminated and filters are a poor solution when the contaminant load is high, especially when it is something other than water. A good clean out may be essential.

My fuel pickup is at the very bottom of my tank. My fuel system filters the entire tank on an ongoing basis. But I always give my filter extra love after refueling at strange places and at the start of each season...
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Old 23 September 2016, 18:20   #13
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Originally Posted by willk View Post
If boats were cars we'd all be richer.



To some degree, I agree with your unspoken argument - "tanks are tanks, fuel is fuel, engines are engines". But the realities of seasonal boating are that tanks are unused for seven months and waterside fueling stations are low volume. The result is water in tanks, debris and biological contamination in fuel supplies. Tanks can and do become heavily contaminated and filters are a poor solution when the contaminant load is high, especially when it is something other than water. A good clean out may be essential.



My fuel pickup is at the very bottom of my tank. My fuel system filters the entire tank on an ongoing basis. But I always give my filter extra love after refueling at strange places and at the start of each season...

Do you have a fuel polishing system willk? Constantly circulating through filters? Nice touch if so👍


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Old 23 September 2016, 19:39   #14
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Do you have a fuel polishing system willk? Constantly circulating through filters? Nice touch if so👍


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It's called a diesel engine they constantly recirculate a high volume of fuel back to the tank
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Old 24 September 2016, 04:44   #15
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It's called a diesel engine they constantly recirculate a high volume of fuel back to the tank
I meant to mention that...
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Old 24 September 2016, 04:57   #16
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Fuel Tank - Flushing

Be very careful. Petrol vapour is very flammable, liquid petrol is not. I would avoid using liquid detergents but rather just set up a fuel polishing system with a decent fuel water separator with filter such a Racor or Separ. Feed the pick up down to the base of the tank and let it run. You will never get all the crud out, but so long as the remnants are well stuck I can't see it becoming a major issue. WRT diesel, your biggest enemy is water causing diesel bug. Again, a fuel polishing set up is the best unless you already have bug in which case steam cleaning might be the best option.
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Old 24 September 2016, 06:09   #17
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Pressure test it and if in any doubt, bite the bullet and rip it out. It's one of the most important aspects to any RIB and yet we often ignore or band aid repair them.

390L tank in a 6.7m RIB WTF
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Old 24 September 2016, 08:10   #18
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With the number of tank failures we all see, you'd think the manufactures would get the message.
These damn things are more or less consumable!
Why on earth would you construct a boat in a manner that requires the deck to be cut out when the tank fails (and it will). Really it beggars belief, but still some RIB builders do it.
I don't know if this is down to some delusional belief that the tanks they fit will never fail or they just don't care, it'll be out of warranty and someone else's problem by then.
(I'd hasten to add my Coastline's tank is fitted in a sealed well under the console and wasn't to bad a job when it failed at 15yrs.
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Old 24 September 2016, 13:20   #19
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With the number of tank failures we all see, you'd think the manufactures would get the message.
These damn things are more or less consumable!
Why on earth would you construct a boat in a manner that requires the deck to be cut out when the tank fails (and it will). Really it beggars belief, but still some RIB builders do it.
I don't know if this is down to some delusional belief that the tanks they fit will never fail or they just don't care, it'll be out of warranty and someone else's problem by then.
(I'd hasten to add my Coastline's tank is fitted in a sealed well under the console and wasn't to bad a job when it failed at 15yrs.
I completely agree, it's bad enough that they don't even provide an inspection port to the tank.
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Old 24 September 2016, 14:12   #20
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Be very careful. Petrol vapour is very flammable, liquid petrol is not. I would avoid using liquid detergents but rather just set up a fuel polishing system with a decent fuel water separator with filter
Fuel polish works when the level of crud is low. Just like ur misses polishing the coffee table with Mr Sheen. But when ur Mayes have been round and left beer mats glued to the coffee table with spilled vindaloo I don't think polish will sort it... But perhaps if the wife had polished before your mates came and you'd had a suitable oily rag to hand you wouldn't be trying to peel the beer mats off -- if you get my analogy you will understand I'm saying fuel polishing may well be useful for minimising contamination but not for a good spring cleaning...

Was ur reference to vapour connected to the detergent? I don't get that.
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