Where Does Water Go When There Is No Fuel Water Separator?

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  Where Does Water Go When There Is No Fuel Water Separator?

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Author Topic:   Where Does Water Go When There Is No Fuel Water Separator?

Joe Hick posted 11-03-2013 08:54 AM ET (US)
My 1998 18' Dauntless with Yamaha 150 does not have a fuel water separator installed. If/when the fuel pump picks up the water, where does it accumulate? In the carbs?
jimh posted 11-03-2013 08:58 AM ET (US)
If your fuel system does not have a fuel-water separating filter, then any water in the fuel passes through the fuel system and into the engine.
Joe Hick posted 11-03-2013 12:05 PM ET (US)
So it then gets burned up?
jimh posted 11-03-2013 12:13 PM ET (US)
It would be great if water were combustible. We could have a lot of inexpensive fuel available. Water tends to put out combustion.
fishgutz posted 11-03-2013 12:17 PM ET (US)
The water gets vaporized and exhausted with the combusted gasses.
Or you could say exhausted with the exhaust.
fishgutz posted 11-03-2013 12:19 PM ET (US)
...if it is NOT too much water because as jimh said it is not combustible and if you have too much water with the fuel the engine won't fire correctly.
Buckda posted 11-03-2013 12:23 PM ET (US)
Vaporized water in a combustion chamber is steam. Steam is perhaps one of the worlds best ways to clean grease and oil from metal...in this case, it is "cleaning" your cylinder walls, where you WANT lubricating oil. So it is a very bad thing.
That said, MOST boat tanks have only a little water in them, if any. A water separating filter is cheap insurance, however, is not usually necessary unless you have other problems (bad gas, faulty fuel tank, bad seals on your hoses or tanks, etc).
Buckda posted 11-03-2013 12:24 PM ET (US)
Also - a 1998 Yamaha probably has a small in-line fuel filter that also separates water. The reason many recommend the cannister type filters is that they offer a larger capacity to hold more water. If you are getting good "highway" gas and changing that little in-line filter every season, you're probably covered at a very minimal level of protection - but that may be all that you've needed.
PeteB88 posted 11-03-2013 03:22 PM ET (US)
Simple, effective accessory. Don't leave port without one.
Joe Hick posted 11-04-2013 12:40 PM ET (US)
Ok got it, thanks guys.

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Author	Topic: Where Does Water Go When There Is No Fuel Water Separator?
Joe Hick	posted 11-03-2013 08:54 AM ET (US) My 1998 18' Dauntless with Yamaha 150 does not have a fuel water separator installed. If/when the fuel pump picks up the water, where does it accumulate? In the carbs?
jimh	posted 11-03-2013 08:58 AM ET (US) If your fuel system does not have a fuel-water separating filter, then any water in the fuel passes through the fuel system and into the engine.
Joe Hick	posted 11-03-2013 12:05 PM ET (US) So it then gets burned up?
jimh	posted 11-03-2013 12:13 PM ET (US) It would be great if water were combustible. We could have a lot of inexpensive fuel available. Water tends to put out combustion.
fishgutz	posted 11-03-2013 12:17 PM ET (US) The water gets vaporized and exhausted with the combusted gasses. Or you could say exhausted with the exhaust.
fishgutz	posted 11-03-2013 12:19 PM ET (US) ...if it is NOT too much water because as jimh said it is not combustible and if you have too much water with the fuel the engine won't fire correctly.
Buckda	posted 11-03-2013 12:23 PM ET (US) Vaporized water in a combustion chamber is steam. Steam is perhaps one of the worlds best ways to clean grease and oil from metal...in this case, it is "cleaning" your cylinder walls, where you WANT lubricating oil. So it is a very bad thing. That said, MOST boat tanks have only a little water in them, if any. A water separating filter is cheap insurance, however, is not usually necessary unless you have other problems (bad gas, faulty fuel tank, bad seals on your hoses or tanks, etc).
Buckda	posted 11-03-2013 12:24 PM ET (US) Also - a 1998 Yamaha probably has a small in-line fuel filter that also separates water. The reason many recommend the cannister type filters is that they offer a larger capacity to hold more water. If you are getting good "highway" gas and changing that little in-line filter every season, you're probably covered at a very minimal level of protection - but that may be all that you've needed.
PeteB88	posted 11-03-2013 03:22 PM ET (US) Simple, effective accessory. Don't leave port without one.
Joe Hick	posted 11-04-2013 12:40 PM ET (US) Ok got it, thanks guys.