I just bought a used 2006 22- foot walk-around powered by a single 200 hp Suzuki four-stroke outboard. It has a Navman fuel monitor installed, but whenever I run the boat it jumps around like crazy. I’m not talking about a little fluctuation: One moment it reads 0 gph, and the next, 20 gph. I’ve tried removing and cleaning the transducer, but there was no change. How do I fix it?
 |
|
 |
|
Email This Article >>
You can send this article to up to 5 email addresses separated by comma - ",".
From:
*
Message:
*
|
|
| |
|
|
 |
|
 |
By: Lenny Rudow
February, 2010
You don’t. In fact, the monitor is probably working just fine. Your problem lies in the nature of your motor, not the flow meter. Like many other modern four-strokes it has a lift pump that cycles on and off feeding fuel into the system, which then feeds a second high-pressure fuel pump. The second pump is the one that feeds fuel steadily to the injectors, while that lift pump runs in spurts. As a result, the flow meter is running in spurts, too. Unfortunately, there is no fix for this problem. On the bright side, the fuel meter will still give you accurate information regarding total burn. So, you can use it to keep track of how much you burn on a trip-by-trip basis, and how much fuel remains in your tanks.