Moderated Discussion Areas
  ContinuousWave: Whaler Performance
  gas filter location

Post New Topic  Post Reply
search | FAQ | profile | register | author help

Author Topic:   gas filter location
whalerbound posted 01-19-2003 03:41 PM ET (US)   Profile for whalerbound   Send Email to whalerbound  
1997 Montauk, where is the recommended location for a gas filter serving a 90 hp Mercury.-
Dick posted 01-19-2003 06:12 PM ET (US)     Profile for Dick    
On my 99 Montauk I mounted the water separating filter on the forward side of the splash well.


lhg posted 01-20-2003 01:28 PM ET (US)     Profile for lhg    
I think a water separating fuel filter in a boat with on-deck tanks is not necessary. This does not mean there is anything wrong with having one. I just think it is overkill and over-clutter. BW does not install them on the factory rigged boats (without internal gas tanks) for a reason - because they are not necessary.

Boats with internal tanks are susceptible to water condensation inside the cold aluminum belly tanks during certain climatic conditions. For those boats, the water separting filter is necessary. Moisture gets into these tanks via the vent line, condenses on the cold exposed top and side surfaces, and drips water into the gas.
that's why a tank must be filled before winter lay-up. On portable above deck tanks, the vent screw can be kept closed so moisture laden air can't get in and condense. It is less likely on plastic and fiberglass tanks anyway, since they get warmed up by surronding air very quickly and eliminate most of the condensation risk. A little MDR WarterZorb dumped into a tank after storage is an easy solution if one is concerned about water with a plastic tank.

If you're worried about dirt particles in a bad batch of gas, you can use the little in-line Tempo fuel filters.

JBCornwell posted 01-20-2003 02:52 PM ET (US)     Profile for JBCornwell  Send Email to JBCornwell     
Howdy, Whalerbound.

I have seen many Montauks with the filter/seperator mounted on the starboard side at the stern.

In the interest of floor space I mounted mine on the starboard side, inside the console. The primer bulb is right there, too. That did require extra fuel line length and it is awkward to get at the primer.

If I had it to do over, I would sacrifice the small amount of deck space and put it inside the starboard stern like the others I have seen.

I think the filter/seperator is a good idea on injected engines, 2 or 4 stroke.

Red sky at night. . .

Tom W Clark posted 01-20-2003 02:57 PM ET (US)     Profile for Tom W Clark  Send Email to Tom W Clark     
I agree with Larry. No need for a filter on a Montauk. Nothing wrong with having one if you really want one, but it's an unsightly device that adds expense, weight and consumes space and is another connection point to fail. I always tell myself: Keep It Simple, Stupid.
Dick posted 01-20-2003 03:41 PM ET (US)     Profile for Dick    
Not needed? Maybe not, but it can't hurt.
Added weight? A pound or two.
Additional cost? Around $35.00, no big deal.
Takes up space? I have a stern seat so had wasted space anyway.
Unsightly? Not in the least.
More possible leaking points? Not if it is installed properly and if good hose clamps are used along with teflon tape or PST used on the threads of the hose barbs.

If you don't want the black filter head buy the chrome plated Tempo as I did, it takes the Mercury, Tempo, Sierra and Aqua Power filters.


lhg posted 01-20-2003 05:39 PM ET (US)     Profile for lhg    
Tom has the advantage of having all of the Whaler catalogs, 1958 on up, showing Classic Whalers 13-17', and not one of them with a water separating filter installed by the factory for the pictures. My Classic 13-16 owners manual says nothing about the need for one either. But for my 18 & 25 Outrages, with built-in tanks, it says they are "strongly recommended".

Does anybody know if the new 170 Montauk comes with a factory installed WSFF? What's good enough for Mercury owned Boston Whaler, is good enough for me. Between the two of them, they should know.

kamml posted 01-20-2003 07:24 PM ET (US)     Profile for kamml  Send Email to kamml     
Last year on vacation at Hilton Head with my Montauk I gassed up at the usual auto filling station on the way to the boat launch on the Colleton River. After about a good 6 hours of running the engine (02 Merc 90) suddenly began to lose power - big time! Looking over my shoulder I noticed my clear glass fuel filter (from WalMart) was full of brown debris. Stopping the motor and cleaning the filter took about 5 minutes. No fancy canister, just a short 2" filter element in a plain glass fitting. It got me home and was good to have. Would the inboard filter on the engine caught the debris, probably. But using my pre-filter keeps the primary filter clean(er)until I have to rely on it, hopefully safe from clogging. No moisture separator though, just a filter - KISS. My $.02. Ken
Dick posted 01-20-2003 07:31 PM ET (US)     Profile for Dick    
Other than some I/O boats the addition of a water separating filter is generaly a dealer installed option.
Just because Whaler doesn't install it at the factory doesn't mean that it isn't good option to have.


There probably has never been a Montauk come from the factory with a water separating filter installed.
What's your problem with someone installing one? It's their boat and their peace of mind that are satisfying.
You may have things installed on your boat that some would think ridculous. But you installed them for reasons of your own.

Nice thing about being a boat owner is: I am the captain and can do anything I want to.


JBCornwell posted 01-20-2003 07:37 PM ET (US)     Profile for JBCornwell  Send Email to JBCornwell     
My Suzi dealer told me that not having one would void the warranty on the EFI 4 stroke.

Red sky at night. . .

lhg posted 01-20-2003 08:11 PM ET (US)     Profile for lhg    
Since Whalerbound was asking where to put one of these, I simply thought an alternative position on their need could be offered, which perhaps could save some time, clutter and expense. I thought that was what this website was all about - differing opinions so one can make their own decision. As I clearly stated, I have no problem with someone using one, and doing what they want to with their boat.

Now at least, he can determine if he really needs one, which could very well be the case.

whalerbound posted 01-20-2003 08:42 PM ET (US)     Profile for whalerbound  Send Email to whalerbound     
Thanks for the good advice and suggestions. All the input is greatly appreciated.
JBCornwell posted 01-20-2003 09:05 PM ET (US)     Profile for JBCornwell  Send Email to JBCornwell     
I apologize if I offended you Larry.

A statement from someone of your reputation and stature carried a lot of weight. If that statement contradicts what a dealer has said, I think Whalerbound needs to know it.

A bit of water or trash has no permanent effect on carbs. In an injection system, $eriou$ damage may occur.


Red sky at night. . .

lhg posted 01-21-2003 07:07 PM ET (US)     Profile for lhg    
No problem JB, and I wasn't offended.

Actually, this fuel filter situation can be really confusing, as you have indicated with Suzuki's recommendation. Here's another good one - On the 135-250 Mercury Optimax's, they say a water sperating fuel filter MUST NOT be used, and will void the warranty! Go figure.

My EFI 200 Merc's have an onboard water separting fuel filter canister that is quite large, almost the size of the regular ones. It is alarmed in case it's full of water. So they are obviously concerned, like Suzuki, that water is a problem for EFI systems. I still do have the conventional water separators on mine, as the first line of defense.

hooter posted 01-22-2003 11:45 AM ET (US)     Profile for hooter    
No sense arguin' the pernt. A feller can hold his pants up by wearin' both a belt and suspenders, if he likes. After all, it cain't hurt:-!
BWLucky13 posted 06-17-2008 10:25 PM ET (US)     Profile for BWLucky13  Send Email to BWLucky13     
Can't hurt to have another filter? Better think that over a little more. Just got my motor out of the shop. The mechanic replaced the fuel hose with inline filter and told me to never add an inline filter to a motor that had an internal filter. He said it is not just a waste of time and money, but also a common place to start a vacuum air leak in the fuel line.
GreatBayNH posted 06-18-2008 01:37 PM ET (US)     Profile for GreatBayNH  Send Email to GreatBayNH     
A comment 5 years, 5 months in the making?

Post New Topic  Post Reply
Hop to:

Contact Us | RETURN to ContinuousWave Top Page

Powered by: Ultimate Bulletin Board, Freeware Version 2000
Purchase our Licensed Version- which adds many more features!
© Infopop Corporation (formerly Madrona Park, Inc.), 1998 - 2000.