Interesting.  Our 35 year old 3GM starts immediately every time with throttle 
on dead idle.  About 10 years ago had starting issues and white smoke.  
Replaced injectors and fuel pump – problem solved.  Check the oil level.  If it 
is rising then fuel is getting into the oil which can cause some spectacular 
results.  In our case culprit was broken diaphragm in the fuel pump which of 
course reduced fuel pressure and allowed leak into oil sump.

 

 

John and Maryann

Legacy III

1982 C&C 34

Noank, CT

 

From: CnC-List [mailto:[email protected]] On Behalf Of Josh Muckley 
via CnC-List
Sent: Wednesday, December 06, 2017 11:53 PM
To: C&C List
Cc: Josh Muckley
Subject: Re: Stus-List Hard starting 3GM 30

 

As I recall the Yanmar manual says to start with mid-throttle.

 

Josh 

 

On Dec 6, 2017 9:16 PM, "David Castor via CnC-List" <[email protected]> 
wrote:

FWIW, on my Westerbeke, the owner's manual recommends starting with throttle 
wide open.  Don't know about Yanmar.  It helped a lot when I started doing 
that.  I guess it's good to read the manual sometimes.  

Dave Castor

 

On Wed, Dec 6, 2017 at 11:49 AM, ALAN BERGEN via CnC-List 
<[email protected]> wrote:

Fred:

My 3GMF (20hp) does the same thing.  When I first start it I give it full 
throttle, and it starts fine.  After a race, it starts fine with no advanced 
throttle.  I just assume the fuel is flowing back in the line, and it's taking 
a while to get to the engine.  Some day I'll tighten all the fuel line fittings.




Alan Bergen

35 Mk III Thirsty

Rose City YC

Portland, OR

 

On Wed, Dec 6, 2017 at 10:52 AM, Fred Hazzard via CnC-List 
<[email protected]> wrote:

What causes it to start poorly?  To start it we have to give it full throttle.  
One more clue is that when it first fires some white smoke comes out..

Fred Hazzard
S/V Fury
Portland Or


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