outboard doesnt seem 100%

[muskiemike12]

If there is an air leak in the fuel line it will cause issues.

 

[MBH]

MBH » Tue May 21, 2013 7:39 pm[/url]"]Update..


GPS speed is 21 MPH.


And throttle response is very slow from sitting to wot

Ok that's a start. Now you need the tach.

Since the speed is down (and feel of power loss) the RPM's are likely down also.

Until the tach arrives here is something to try.
With the motor off. Remove the cowling. Have someone advance the throttle while you watch the linkage movement. If shifter is hard to get into gear DO NOT FORCE it, spin the prop just a little. Watch to be sure the carb throttle plate is opening fully. The plate will be horizontal, and level and you should be able to see straight into the carb throat.

I did this today it everything looked good to me.

 

[Whoopbass]

Since you've had the boat has it ever ran right?
I would get a spark tester and make sure your getting fire on all 3 cylinders.

 

[MBH]

Since you've had the boat has it ever ran right?
I would get a spark tester and make sure your getting fire on all 3 cylinders.

Checked spark this morning .. got a good spark on all cyclinders.

 

[Whoopbass]

Squeeze the primer bulb until firm then check the carb bowls and make sure they're both full of gas. Do this by removing the drain screws on each bowl.

Is this a 2 or 4 stroke motor?

 

[MBH]

Its a 2 stroke ..

 

[MBH]

Should I replace thespark plug wires?

 

[Whoopbass]

If your getting good spark then your wires are fine. You can change your plugs.
Has this boat ever ran right for you or did you buy it in this condition?

 

[MBH]

It never ran right for me but I rode in it a few years ago and don't remember it being like this. I just left the marina and they said that my prop was too high of a pitch. (15)

 

[Whoopbass]

I have a 40hp Suzuki with a 15 pitch prop on a 15' v-hull and mine runs fine. Takes off like a beast and tops out probably in the low to mid 30's. Your not going to get an extra 15mph by dropping down a couple pitches.
Go talk to the previous owner if possible and see if this is normal. I would also find a new mechanic.

 

[MBH]

Previous owner said it ran low 30s with him. I agree about the prop though

 

[MBH]

Squeeze the primer bulb until firm then check the carb bowls and make sure they're both full of gas. Do this by removing the drain screws on each bowl.

Is this a 2 or 4 stroke motor?

Top and middle had gas in the bowls.. the bottom carb did not

 

[MDCrappie]

MBH » Thu May 23, 2013 4:43 pm[/url]"]

Squeeze the primer bulb until firm then check the carb bowls and make sure they're both full of gas. Do this by removing the drain screws on each bowl.

Is this a 2 or 4 stroke motor?

Top and middle had gas in the bowls.. the bottom carb did not

MBH » Mon May 20, 2013 1:37 pm[/url]"] I did have the carbs rebuilt and the timing was off so that's fixed now.

Find a new mechanic....either float is stuck or not adjusted correctly.

 

[turbotodd]

With the 1.87 gearcase at 21mph, you're only turning barely over 3000 RPM assuming there's no slippage. Tachometer will help you a ton.

I'm putting a guess on the fact that it's running on 1 or 2 cylinders at the most. On a 3 cylinder engine (even on 4,5,6 cyl engines especially 2 strokes), it's tough to tell if it's running all of 'em unless you "know the sound"....meaning experience. In a test tank, pull a plug wire and then start it. Listen to it. Shut it off and then pull one of the others. If you have a dead cylinder, or even a carb that's not feeding it properly, you'll find out which one real quick.

I was also going to suggest a second opinion from another repair facility. I don't liek to use the word "mechanic" because there is a huge difference between a mechanic and a technician. A mechanic fixes stuff sometimes. A technician finds the problem, repairs the cause of problem, and then checks it all over when the repairs are made before calling it "done".

 

[MDCrappie]

turbotodd » Thu May 23, 2013 10:32 pm[/url]"] In a test tank, pull a plug wire and then start it. Listen to it. Shut it off and then pull one of the others. If you have a dead cylinder, or even a carb that's not feeding it properly, you'll find out which one real quick.

If it were me I would NOT do this. If you are not getting fuel to one of the cylinders it means you are also NOT getting any lubrication to that cylinder. You could find this out REAL quick if you run it too long like this. Get fuel flowing to that carb first.

 

[MBH]

So dont even run it like this? I dont mix the gas as it had its oil injected

 

[MDCrappie]

MBH » Fri May 24, 2013 7:30 am[/url]"]So dont even run it like this? I dont mix the gas as it had its oil injected

Doesn't matter if oil is mixed or injected. If the fuel is not reaching the carb, it is not reaching that cylinder. With no oil/fuel in that cylinder with the motor running you have no lubrication. NO lubrication = blown motor.

you be the judge as to whether or not you want to run it.....I would not. I would get gas flowing to all carbs first.

 

[MBH]

10-4.. I'm tempted to try to tackle it myself

 

[MDCrappie]

MBH » Fri May 24, 2013 8:34 am[/url]"]10-4.. I'm tempted to try to tackle it myself

|Pull the line off feeding that carb and squeeze the primer bulb to see if fuel comes out. If it does then the blockage is in the carb, if it doesn't then the blockage is in the feed line.

If blockage is in carb, I would remove, clean and check float adjustment.

 

[MBH]

MBH » Fri May 24, 2013 8:34 am[/url]"]10-4.. I'm tempted to try to tackle it myself

|Pull the line off feeding that carb and squeeze the primer bulb to see if fuel comes out. If it does then the blockage is in the carb, if it doesn't then the blockage is in the feed line.

If blockage is in carb, I would remove, clean and check float adjustment.

I pulled the line feeding into the carb and it was full of gas so I know its blockage in the carb.