I agree unless you know otherwise, it is most likely a dirty prop. On Mon, Sep 14, 2020, 10:52 David Miles <mi...@intergate.ca> wrote:
> Our 2GM20F had similar issues with rpm twice. > First time was when we bought the boat. Simple bottom clean and all was > good. > Then, due to C19, we hadn't been out for 5 months and 2300 was our max > while heading to the lift. After the crud and barnacles were removed from > the prop and the bottom, 3600rpm (after fully warmed up) was easy. > This time we installed a SS elbow and the engine now starts better than > ever with nothing more than a slight puff of white exhaust. I suggest dirty > prop. Good luck. > > On September 12, 2020 7:44:47 p.m. Dave S <syerd...@gmail.com> wrote: > > Non C&C content but relevant. My neighbour has an Ericsson 30 with a 16hp >> universal diesel. >> His engine will not rev beyond 1800 In reverse and is similarly >> challenged in forward. It’s dangerous as he cannot proceed faster than 2kt >> against wind and waves. It revs freely beyond 3000rpm in neutral. >> Am thinking it’s either low fuel flow (so work from pickup tube to pump >> to troubleshoot) or a partially blocked mixing elbow. (Re and re) Will also >> assist him in verifying that throttle and shutoff are fully operable at the >> engine and that the air intake is unrestricted. He recently replaced his >> fuel filters. >> Any other thoughts or expertise that might help? >> Many thanks! >> >> Dave - 33-2 (with a well loved and happy Yanmar) >> >> Sent from my iPhone >> _______________________________________________ >> >> Thanks everyone for supporting this list with your contributions. Each >> and every one is greatly appreciated. If you want to support the list - >> use PayPal to send contribution -- https://www.paypal.me/stumurray >> > > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - > use PayPal to send contribution -- https://www.paypal.me/stumurray > >
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