fuel restriction alarm?

[junior1113]

just put a water separatoron my 93' 200 hp ocean pro. had no prior issues. and now fuel ristiction alarm sound when running over 4200 rpms. i have triple checked all connections and hoses. when i sqeeze primer ball i can see air bubbles going into my in line fuel filter. could this simply be the primer ball? no matter what i do air keeps getting into in line filter. any ideas? thanks -paul

 

[junior1113]

Re: fuel restriction alarm?

Forgot To Mention Runs Fine Revs Right Up To 5700

 

[d.boat]

Re: fuel restriction alarm?

just put a water separatoron my 93' 200 hp ocean pro. had no prior issues. and now fuel ristiction alarm sound when running over 4200 rpms. i have triple checked all connections and hoses. when i sqeeze primer ball i can see air bubbles going into my in line fuel filter. could this simply be the primer ball? no matter what i do air keeps getting into in line filter. any ideas? thanks -paul

what filter did you put on it? Do you know what the GPM rating for it is? Also, are all gaskets on the filter sealed properly?

 

[jonesg]

Re: fuel restriction alarm?

disconnect the fuel pickup from the tank and run it from a jug of gas,

often its the anti-syphon check valve at the 90 deg bend in the top of the tank pickup tube. That can be removed with pliers.

make sure you're running at least 3/8 hose and that the hose isn't swollen from ethanol inside.

 

[junior1113]

Re: fuel restriction alarm?

it is a 90 gallon per hour. this started after i put water seperator on. there should'nt be air getting to the in line fuel filter, right. every time i pump the ball gas and some air bubles go to filter

 

[d.boat]

Re: fuel restriction alarm?

it is a 90 gallon per hour. this started after i put water seperator on. there should'nt be air getting to the in line fuel filter, right. every time i pump the ball gas and some air bubles go to filter

Yea, 90 gph should be more than enough.

I suspect it is more of a restriciton problem than an air problem, and don't know about yours, but mine has several places air can get in at the filter itself (not mentioning any other fuel line areas):

fuel line fitting - Inlet from tank (I actually have two: dual tanks)
fuel line fitting - out to engine (I actually have two: main and kicker)
Gasket where filter cannister screws onto mounting bracket
Gasket where drain bowl screws onto bottom of cannister

I've never had any air leakage problems at all in many, many years and filter types, but you never know. I really doubt that you have a significant problem there, but no harm double checking.

Plus, I could be wrong, but I believe the fuel restricion alarm is based on pressure, not fuel flow. Therefore, I don't know that a little air in the line would cause the alarm. I have heard (but not experienced) that air in the gasoline line can cause over-oiling though.

My guess is that Jonesg is on the right track.

 

[clanton]

Re: fuel restriction alarm?

If these filters are not OEM or Rayco. The passages in the housing need to be check with steel ball, which should roll thru the passage or use drill bit. The Rayco needs to be sized to the engine, All fittings need to be checked OEM or aftermarket. Alarm is set by vacumn switch.

 

[junior1113]

now another small issue

now another small issue

ok so took it out today and canceled out (bypassed) water seperator still did it. then by passed the new in line fuel filter and this was the problem it had 1/4 connections when the whole boat is 3/8. this was my fault. now that the alarm is off i'm faced with another issue: after fishing for a couple hours i went to take off and rpms were low could only hit 4500 wot then i told my buddie to pump primer ball and it went flat on him. after a minute or two. it came up to 5800 then drove 30 miles nicely. it seems to repeat this after every sitting. and of course on land this is un-noticable. was thinking new primer. boat was fine untill i decided to put a water seperator and new fuel filter. appreiate knowledge and experience.

 

[wilde1j]

Re: fuel restriction alarm?

For your size motor, fuel line size is critical, as you now know. Glad you were able to get it fixed easily.

 

[w2much]

Re: fuel restriction alarm?

Just had the same issue with my 1996 150 Evinrude. Switch out or install a new anti syphon valve, not an aluminum one use the brass kind . Also install a new fuel water seperater canister filter even if your old one is fairly new. You may have water in the fuel filling the filter ( causing a restriction)and ruining your anti syphon valve at the same time. When you change out the filter pour its contents into a glass jar( put of the cigarette first) and view its contents , your may see something interesting. If so clean your fuel filter( on the engine) or replace it. Worked for me. Total cost about 35.00.

 

[junior1113]

Re: fuel restriction alarm?

thanks for input. will put cigarette out so this 35.00 job doesnt cost me 20,000. will post back with out come.

 

[junior1113]

primer ball went flat and motor runs rough

primer ball went flat and motor runs rough

no water in the water seperator. pulled off the anti siphin valve is there a way off knowing if its bad. can this be eliminated? what does it do? sorry for all the questions just learning some thing new. did notice a wire that was not connected to negative battery terminal that fed a ground bank???

 

[wilde1j]

Re: fuel restriction alarm?

If your fuel tank is below the motor, you can remove the anti-syphon valve, and drive the little check ball out using a punch, then replace the AS valve. Sometimes the ball gets hung up, causing a lot of flow resistance. Not even worth checking operation if the tank outlet is below the motor.

 

[junior1113]

Re: fuel restriction alarm?

thanks again to all that answered, figured i might be able save some $ fixing this myself. fuel tank oulet let is aprox. 20" below where gas line goes into fuel pump. so i will knock the ball out. so the only purpose of this ball is to keep gas from flowing out when gas tank is higher than motor?

 

[wilde1j]

Re: fuel restriction alarm?

Yes, in the case of a line break, etc.