Shift interrupt switch - how to adjust??

[Happygolucky]

Hello & Thanks, I guess that means ; 4-5 mph while In forward gear idle !?

Any idea what might be causing unusually high fuel consumption /flow readings (Garmin flow sensor) during low speed 6-7 knots ?
Flow can vary anything between 1 L/nm to 18L /nm … at cruising speed 22-23 knots , it shows a more stable and I assume, accurate reading around 2L/nm

 

[Happygolucky]

fuel flow..

 

[flashback]

I'm not familiar with the new tech stuff. At low speeds you will use more fuel. Your pushing a brick thru the water.. your better off at plane speed.

 

[ROY WILLIAMS]

Hello & Thanks, I guess that means ; 4-5 mph while In forward gear idle !?

Any idea what might be causing unusually high fuel consumption /flow readings (Garmin flow sensor) during low speed 6-7 knots ?
Flow can vary anything between 1 L/nm to 18L /nm … at cruising speed 22-23 knots , it shows a more stable and I assume, accurate reading around 2L/nm

I was the carb float assembly adjustment upper and down , cleaned it of the TB cleaner carb ..the idle adjusting needle is doing the CW tight , then the CCW around 1.5/2 turns ..
I was taking the needle carb out and spraying it then adjust it ..

 

[QBhoy]

Hi. Where did you put the fuel flow sender. Being a carb…it is presumably an analogue flow sender that’s sending a converted signal to your plotter there. Depending on where you’ve fitted it..you might find that the closing of the float on the carb…may be having influence

 

[Happygolucky]

I'm not familiar with the new tech stuff. At low speeds you will use more fuel. Your pushing a brick thru the water.. your better off at plane speed.

indeed true , however I have some distance of no wake/ max 8 knots before I can go to planing speed..

 

[Happygolucky]

Hi. Where did you put the fuel flow sender. Being a carb…it is presumably an analogue flow sender that’s sending a converted signal to your plotter there. Depending on where you’ve fitted it..you might find that the closing of the float on the carb…may be having influence

indeed carb, but flow sensor is nmea2000 placed near tank.. however I just learned from another forum that my mechanical fuel pump is hard to get a stable flowreading from at lower rpms.. and that a “ Pulsation damper” might cure that…

 

[Happygolucky]

I was the carb float assembly adjustment upper and down , cleaned it of the TB cleaner carb ..the idle adjusting needle is doing the CW tight , then the CCW around 1.5/2 turns ..
I was taking the needle carb out and spraying it then adjust it ..

will try that!

 

[QBhoy]

View attachment 385551
indeed carb, but flow sensor is nmea2000 placed near tank.. however I just learned from another forum that my mechanical fuel pump is hard to get a stable flowreading from at lower rpms.. and that a “ Pulsation damper” might cure that…

Think that sounds about right. Might need some gear oil topped up too…if I could be so cheeky to suggest it. Unless you’ve done away with that header system and alarm. All the best.

 

[Happygolucky]

Think that sounds about right. Might need some gear oil topped up too…if I could be so cheeky to suggest it. Unless you’ve done away with that header system and alarm. All the best.

thanks for being cheeky will do asap!

 

[QBhoy]

thanks for being cheeky will do asap!

Haha. No probs. Best of luck !