Fuel guage

[Tige M.D.]

Tip, sounds like you have this thing nailed. Glad to see it worked out good.
Just try not to watch the gph screen. It'll make you want to sit on the beach all day.

[Tip]

Greg,
Thanks for all your help.
I know what you mean about watch the fuel flow...they should have just put a $ on the gauge!

Here is a picture of the control head mounted in my 22v:

[Tip]

Here is a picture of the transducer installed.

[moved2ski]

Thanks Greg

I got my Navman in this week as well. It seems to work great. I put the transducer just below the fuel filter.

[Terry Wingerson]

Fuel guage

I own a 03 21i which I ran out of fuel on the second outing. After replacing the sending unit in the tank for the third time with the adjustable full/empty limit settings I found that the guage was very jerky. In inspecting the guage I found that the guage needle was dragging on the face of the guage. I removed the guage and drilled a very small hole in the side of the guage and used a jewller's screw driver to pry the needle up off the face of the guage and siliconed the hole shut to prevent moisture from entering the guage and reinstalled.
This took care of all problems and is very accurate now. If you a true reading you do need to be setting due to the tank design.

Good Luck

[Ruune]

I think I'm having the same problem shaz is... where is the sending unit located on the gas tank, and how do I access it? Whats happening is that it reads full all the time. I havent run it down to empty, but I've put 15 gallons in the tank more than once, and the tank still reads full.

[seymoc1]

navman 2100

I'm having the same problem with my fuel gauge as everyone else. I'm going to install a fuel management gauge of some kind (navman, faria, humminbird). I was leaning toward the navman, so I contacted them to verify the 2100 would work on my boat. Here is a snip of our conversation:
----------
Your Request:
I have a 2000 tige 21V with a mercruiser 350MPI 315hp inboard. I would like to install the navman fuel 2100 but want to make sure the navman will work. I noticed in the literature that it supports up to 300hp.

Solution:
That spec is correct. So you do not want to use our fuel computer on
your boat because it won't work correctly. The HP rating is too high.

NavmanUSA
-----------

What is everyone's thought or opinions on this? My second choice is the Faria because I can't find the Humminbird anywhere. The best price I've found on the Faria is $212.


Thanks.

Chris

[Tip]

I installed a Navman 2100 in my 03 22v, 350mpi and it's working great.

However, the manufacturer always knows best. If they said no, don't get the Navman.

When I researching fuel flow meters I was a little puzzled when I read that limitation on horse power, mainly because I could not figure out how the fuel meter would know what the hp rating of the engine would be? Once I read that the Navman could handle fuel flow rates up to 35 gal per hour I figured it would work fine in my boat. The highest I've seen on my 22v is 12 gal per hour (doing 35mph). My boat burns .5 gal per hour at idle and 7- 7.5 hour towing a board.

Just remember, no matter what fuel flow meter you get, if you don't know how much fuel you start with, you won't know when you'll run out. I learned this the hardway! -Tip

[seymoc1]

Tip, That's what I thought too. If the navman is rated up to 35 gal/hr it should handle anything I can throw at it with my motor. Shawn at Navman said his concern was over 300hp could create a lean condition.


Hey Tige M.D. What are the specs on the Humminbird? Do you agree that the meters should be based on flow rate and not horsepower?


--chris

[Tip]

Chris,
I have not noticed any difference in the way my engine runs with the meter installed. However, I am not an internal combustion engine expert by any means.

I'll pull the plugs this weekend and take a look at them. Then I'll put some hours on the boat and re-inspect the plugs. I think I heard somewhere that a lean running engine will leave a whitish residue on the plugs.

I guess I'm being way too pragmatic in my approach to this meter. I'm with you Chris, what does Greg (TigeMD) think? -Tip

[moved2ski]

Navman

I have a 315 hp in my 2001 21 I. My navman 2100 has been in for one month. It works fine. In the speck sheet on the web sight it said limited to 300 hp. When I read the sheet it was shiped with it stated 400 HP or 35 ghp. I put the transponder 2 inches under the big fuel filter after not finding a good place near the tank.

[Tip]

I finished the calibration check on mine today. Last week I filled the tank all the way to the top (fuel almost running out) When filled up the tank today it took 14.8 gallons. The Navman said I had burned 15 gallons, that's close enough for me.

This fuel flow meter is the ticket. Since I've had it I have figured out that my fuel gauge does not begin to fall below full until I have burned 18 gallons (half a tank)! When the fuel gauge indicates 1/2 I only have about 7 gallons of fuel remaining. It scares me to think how many times I was driving around with a 1/4 tank of gas thinking I had 10 gallons when really I only had 3-4 gallons in the tank.

-Tip

[billspin]

Has anyone installed the Navman 2100 Fuel Flow meter on a 2004 22i with the Marine Power 335 HP engine?

[JASON739]

fuel sender

Tigger,

The factory had poor quality senders for some time. They did send me two new ones that had external floats that did not work any better. Finally the third sender had an internal float and works well. I will check this weekend to see if there is a part #. I have the old ones on my shelf so I can for sure give you the one you don't want. Keep in mind the location of the sender i.e. the 20i is in the passenger side corner, therefore when weight is on that side the reading is closer to full.
p.s. easy to change

[seymoc1]

Originally posted by Tip
Here is a picture of the transducer installed.

Hey Tip.

Can you elaborate a little more about where exactly your transducer is located? I'm about to install a flow meter and I'm trying to find the best place to cut the fuel line. Did you mount it after the filter/water seperator?

The hose I'm looking to cut is the one that runs to the fuel rail. It has the metal connectors on both ends but I want to make sure I'm not cutting a hose that shouldn't be cut.

I appreciate your time.

--chris