Help something went wrong!

[bsh21wash]

I was driving my boat all day today no problems... I was on my way back to the dock when all of a sudden my RPMs dropped from 4000 to little under 3000. I stopped checked things out (oil, wires) everything seemed alright. I started to go again and the boat wouldnt go above 3000 RPMs at full throttle??? There was also blue smoke coming out from the back, never did that before. Any ideas?

 

[Limited-Time]

Re: Help something went wrong!

Blue smoke= oil burning. The first thing I would do is a compression check. A sudden problem could be any thing from a bad head gasket to a holed piston to a bad valve.

 

[bsh21wash]

Re: Help something went wrong!

So I need to buy a compression gauge, then i just hook it up where the spark plugs are right? What kind of numbers am I looking for?

 

[Haut Medoc]

Re: Help something went wrong!

125 or so.....
Anything under 100# would be bad......

They should all be within 10% or so.......​

 

[bsh21wash]

Re: Help something went wrong!

Ive been searching but havent found exactly what I need to do for the compression test.

Any help?? Thanks

 

[MJ76]

Re: Help something went wrong!

Warm up the motor, then shut it down and pull all the plugs. Leave the throttle wide open. Shut off your lanyard switch. Hook up your compression gauge and crank over about 4-5 seconds. Repeat for each cylinder.

 

[bsh21wash]

Re: Help something went wrong!

Ok call me dumb but how can I turn the motor over with both the throttle engaged and the lanyard disengaged?

 

[Coors]

Re: Help something went wrong!

It will turn over, but get no spark.

 

[Don S]

Re: Help something went wrong!

Here are a couple of things that might help.

Compression Test

How to make a Remote Starter

 

[sabastianunf]

Re: Help something went wrong!

be sure to label your plug wires before you disconnect them so you don't get them mixed up when reconnecting.

 

[Bondo]

Re: Help something went wrong!

Ayuh,.......

And I just Pull the Coil Wire,.... Rather than relying on a Lanyard Switch,....
That My boat doesn't Have..........

Don's Links tell the Whole Story,.......

 

[Coors]

Re: Help something went wrong!

lol bondo; you always make me feel better. Lanyard switch- what is that; that be before my boat was born.

 

[I/O WALDO]

Re: Help something went wrong!

Temp.ok?