I’ve tried every imaginable throttle position, and yes, full seems to work best as the manual suggests.
I read somewhere that when the throttle is in the full position, it actually retards the injection pump to assist in starting. Richard Arper rtar...@wavecable.com From: Dreuge [mailto:dre...@gmail.com] Sent: Saturday, June 7, 2025 6:39 AM To: cnc-list@cnc-list.com Cc: Richard Arper Subject: Re: Stus-List Yanmar 3GM30F starting Are you putting the throttle to full when cold starting. This works well for my 3QM30 even when it gets down to freezing temperatures. - Paul E. 1981 C&C Landfall 38 S/V Johanna Rose Fort Walton Beach, FL http://svjohannarose.blogspot.com/ On Jun 6, 2025, at 8:58 PM, Richard Arper via CnC-List <cnc-list@cnc-list.com> wrote: This issue may have been discussed previously before I joined the group, but I wanted to throw it out there. I have a 34+ with a Yanmar 3GM30F and its terrible to start when the temperature is maybe 50-60 degrees or less. That's a problem in Puget Sound where we sail all year. Once started, however, it starts perfectly all day after that with just a couple turns. I've read online about others having the same problem and offering starting procedures such as turning over with compression levers open to lubricate, then turn over with no fuel to heat up the chambers. There's even an air preheater that tractors use. But this doesn't solve the problem, and it's to the point where I'm ready to rebuild or repower. However, what's the root of the problem? Is it poor compression? (engine only has 1600 hrs.) Is it bad injectors? Other issues? Trait of this particular engine? My 34 had a 2QM20 that started flawlessly under any conditions, so I know that it's not a lack of glow plugs. Richard Arper rtar...@wavecable.com C&C 34+ Your contributions help pay the fees associated with this list and help to keep it active. Please help by making a small contribution using PayPal at: https://www.paypal.com/paypalme/stumurray All contributions are greatly appreciated.
Your contributions help pay the fees associated with this list and help to keep it active. Please help by making a small contribution using PayPal at: https://www.paypal.com/paypalme/stumurray All contributions are greatly appreciated.
