The Cape Dory Board

I have the same 1983 1gm on my 25d. Used to rev up to 3000 in gear now only 2500 rpm. Fuel is good to injector, no air in lines and new filters. Starting is difficult unless warm, but I’m careful to close raw water seacock while cranking. Probably needs a valve job. Replaced exhaust elbow 2022 old o...

I got a cruise air unit with the 25d, does work well but was too heavy to manhandle to the forward hatch by myself. Got a window unit that sits on a small frame it fits in the companionway, easier to lift out of the quarter berth. With a plywood dropboard it seals out the Texas heat pretty well, cou...

Thanks for the replies, after changing the rw impeller White Smoke has cleared up, probably steam. I still can’t rev past 2100 but have bled fuel ane engine runs fine, just not full rpm. Will live with it.

Sure do have the mixing elbow, and I replaced it last year. Original 1983 elbow had a pinhole in the liner. Thanks for reply.

1983 cd 25d, motoring out I noticed white smoke coming from exhaust, water was pumping but less than normal. When I got back I checked the RW impeller and sure enough there was a missing vane. Could not fine The vane in the RW hoses, so I replaced the impeller. Cylinder head was pretty hot as well a...

Follow up, after digging out most of the old hardened water seal (small) I can see a slight lip that the new water seal would fit in. Problem is removing last remaining rubber of original seal from the lip isn’t working. Tried screwdriver, dental pick, wd40 To soften the old hardened seal remaining....

1983 25d replaced water pump in2011, the two seals were included and I have stored with the original pump. Now the newer pump is dripping so I set about to replace the seals in he old pump,and just swap out pumps. Old pump shaft came out nicely, bearings good, but removing old seals , source of orig...

I was looking at the yanmar manual yesterday but didn’t find much reference to low rpm under load. I’m stuck at 2200 in forward and 2400 in reverse. Haven’t touched the throttle linkage, governor, or anything but the fuel filters. Began wondering if the fuel pump diaphragm on 1gm is wearing out,,as ...

Thanks for the replies to my 1gm RPM after filter change request. The local rigger/mechanic bled the high pressure pump this week and really didn’t improve the 2200 rpm under load at 4 knots. For some reason rpm in reverse is closer to what I expect under load at 2500 rpm? For now engine is running ...

On my 25d I changed the fram filter and the primary? Filter on the engine. Took a long time to bleed the air, now the engine runs but only at 2000 rpm under load? I get 3000 rpm in neutral, but not under load. Question- do I still have air in one of the filters. When I open the bleed screws on the e...

Walter, I did a similar setup on my cd25d, but only have the second reef and main halyard led back to,cockpit. 3 lines vs 5. A winch was necessary for raising the main and probably for the reef due to friction. You may want to,evaluate your topping lift for adjustment in the cockpit to assist with t...

I am surprised that nobody has responded to my post. Is cleaning out the exhaust manifold something that just isn’t required and nobody has done it ? I know replacing the exhaust elbow is common and I am getting the new one tomorrow, but I did find some advice on sailnet and from yanmar service in T...

I removed the exhaust elbow yesterday and found a pinhole leak in the inner cylinder, need new elbow. My question is that very little carbon buildup in the elbow but more in the exhaust port/manifold coming out of the cylinder head. I am seeking advice on the best way to clean out this carbon withou...

In the middle of an article cold spell I am asking a question that I should know the answer to! My 1gm has a drain for the cylinder head. I ran an antifreeze mix thru the cold engine (running but not hot) and then drained the cylinder head. My question is about the thermostat, does it open to let co...

I was looking for a replacement exhaust elbow for 1983 1gm at exhaust elbow .com but now can’t find website? Anyone know what happened or where a reasonable stainless elbow I available, new?