Table of Contents
- 1 What makes an outboard motor surge?
- 2 Is it OK to run a four stroke outboard full throttle?
- 3 What causes engine to surge?
- 4 What RPM should I run my Yamaha outboard?
- 5 How fast does a 200 hp boat go?
- 6 How long can you run a boat on muffs?
- 7 How many fuel pumps does a Yamaha 200 HPDI have?
- 8 What kind of surge does a Gale Outboard have?
What makes an outboard motor surge?
Re: Motor surges at high RPM’s On the 225, most times the problem with fuel feed can be traced to one of three things – (1) a deteriorated high pressure fuel filter, (2) water or junk in the VST, (3) or a clogged inline fuel pump filter in front of the injector rail.
Is it OK to run a four stroke outboard full throttle?
As long as you are propped correctly and can hit the upper end of the RPM range, [to run an engine at its maximum throttle all the time] is not a problem. Most smaller engines have two speeds, OFF and WOT. Very rarely does an engine wear out. Keep up with maintenance and you will be fine.
How fast will a Yamaha 200 outboard go?
The F200 I4 rose to the occasion with a top speed of 47 mph at 6050 revs swinging a 17-inch pitch prop, with an optimum cruise of 23.5 mph at 5.2 gph for a net of 4.52 mpg.
Can you run Yamaha outboard on flush port?
Yamaha gives three choices — with a flush bag, muffs, or hose-port connector and says all three methods work equally well. Bag and Muffs: Engine should be vertical, run no more than 800-900 rpm in neutral for 15 minutes with the prop removed. Flushing Port: Engine should not be running; it can be tilted or vertical.
What causes engine to surge?
If an engine is not getting enough fuel (this is called “running lean”), due to fuel pressure (regulated by the fuel pump and regulator), restricted fuel injectors, a vacuum leak or really anything that throws off the fuel mixture going in to the engine, this can cause the surge.
What RPM should I run my Yamaha outboard?
For example, Yamaha states that the WOT rating for its 90HP outboard is 5,000-6,000 RPM with peak power at 5,500 RPM. If the WOT test showed the Yamaha 90 reaching just over 6,000 RPM, you would need to fit a prop with at least 2 inches more pitch.
How do I know if my outboard is running too lean?
Usually when people talk about motors running lean, they are referring to the fuel/air ratio. Signs that the fuel/air ratio is too lean are things like; backfires at high throttle settings, hesitation when the throttle is opened, or the motor actually slowing down the more you open the throttle.
How much fuel does a Yamaha 200 burn?
| Select Yamaha Outboard Test Model | Stroke | Fuel consumption WOT |
|---|---|---|
| Yamaha 175 A HP | 4 stroke | 16.3 GPH |
| Yamaha 200 HP VMAX V6 | 4 stroke | 19.2 GPH |
| Yamaha 225 HP V6 | 4 stroke | 17.7 GPH |
| Yamaha 250 HP V6 | 4 stroke | 23.8 GPH |
How fast does a 200 hp boat go?
A typical 26 feet pontoon with 200 hp motor easily reach speeds up to 40 mph. Even under full load conditions, you can go to 30 mph. From my experience, the optimum speed for water sports is 15 to 35 mph. So your pontoon might be a little slow but will be just fine for any water sports you like to do.
How long can you run a boat on muffs?
Don’t run the engine unattended. Keep an eye on the muffs and make sure they don’t slip off of the water intakes. Regardless of your task, it’s unlikely that you’ll need to run it more than 10 to 15 minutes.
How do you flush a Yamaha outboard in the water?
You’ll find the built-in flushing device, which is a hose fitting, located near the lower rear cowling. Connect the hose to the flushing device fitting and turn on the faucet. Let the freshwater run through the motor for 15 minutes. When it’s complete, turn off the faucet and disconnect it.
Why does my outboard motor keep surging up?
As Ben noted, surging can be caused by crankcase leaks or some other source of air leaks, perhaps in the fuel line or a bad carburetor or reed plate gasket.
How many fuel pumps does a Yamaha 200 HPDI have?
Five (5) fuel pumps, HP fuel pump driver, two fuel injector drivers, 750/1000 psi fuel injectors, multiple cylinder operation, etc.. seem to be every bit as problematic as a common four stroke. If I understand it correctly, it is running fine at the moment.
What kind of surge does a Gale Outboard have?
Currently, there are 0 users and 1 guest visiting this topic. I have ’63 Gale 15 HP 15D15B outboard that is surging at 3/4 throttle to WOT. It is a VERY rythmic, smooth surge that starts somewhere above 1/2 throttle and becomes more pronounced as I go to WOT.
What causes Wot timing to vary on antique outboard motor?
Some of these engines have funky linkages, perhaps the choke valve is fluttering slightly at WOT. Your symptoms surely seem like some sort of fuel restriction issue, but anything is possible. A sloppy mag plate could cause WOT timing to vary just a bit.