The 1GM10 is fresh water cooled with no heat exchanger. I'm really hoping it's not a head gasket. Would there not be water in the oil sump if the gasket were blown?
Brent 27-5 Wild Rover. Sent from my iPhone > On Apr 1, 2017, at 5:06 PM, Gary Russell via CnC-List <[email protected]> > wrote: > > Not to be an alarmist, but white smoke usually means a coolant leak, such as > a blown head gasket. Take a sniff of the exhaust. If it has a sweet smell, > you've got an internal coolant leak. Is your coolant level going down, with > no apparent leak? > > Gary > S/V Kaylarah > '90 C&C 37+ > East Greenwich, RI, USA > > ~~~~~~~_/)~~~~~~ > > >> On Sat, Apr 1, 2017 at 5:50 PM, Josh Muckley via CnC-List >> <[email protected]> wrote: >> You can remove the injector from the block. Turn it upside down, reconnect >> to the fuel pipe, turn the engine over until the injector starts to spray. >> Pop, pop, pop. Watch the spray pattern. It should be a clean, wide cone >> pattern, equally aerated, fine mist. This is a test you should do before >> you send it to a shop. >> >> If you want to attempt to clean it yourself you can unscrew the 2 halves of >> the injector, remove the spring and valve needle. Clean all the pieces with >> something like carb cleaner, berrymans b12 chemtool, or toluine. You have >> to be careful not to scratch any of the internal components. A hardwood >> scraper can be fashioned or paint stir stick or tooth picks. When you >> satisfied, reassemble the same way it came apart. Re-test for spray >> pattern. Re-install. >> >> While you have the injectors out I like to test compression and clean the >> precombustion chambers. They can get pretty well covered with carbon which >> will make them harder and harder to remove. You'll probably want to replace >> the thin copper ring between the two halves. There's also a lead gasket and >> a copper foil disc which go between the injector and the precombustion >> chamber. >> >> Josh Muckley >> S/V Sea Hawk >> 1989 C&C 37+ >> Yanmar 3HM35F >> Solomons, MD >> >>> On Mar 31, 2017 10:06 PM, "Brent Driedger via CnC-List" >>> <[email protected]> wrote: >>> Greetings all. >>> >>> The 1GM10 Yanmar on my 27 began to give me issues last summer. The usual >>> complaints, hard starting, ran well once it was going. I replaced the >>> filter in the fall and my next move is to replace the old fuel and clean >>> the tank. >>> But judging from the white smoke in the exhaust I'm thinking the injector >>> spray pattern is off and I'm getting some dripping. I'm planning to >>> extract and clean it or replace it. >>> Any tips from those who have done this would be appreciated. >>> >>> Brent Driedger >>> 27-5 >>> Wild Rover >>> Lake Winnipeg. >>> >>> Sent from my iPhone >>> >>> _______________________________________________ >>> >>> This list is supported by the generous donations of our members. If you >>> wish to make a contribution to offset our costs, please go to: >>> https://www.paypal.me/stumurray >>> >>> All Contributions are greatly appreciated! >> >> _______________________________________________ >> >> This list is supported by the generous donations of our members. If you wish >> to make a contribution to offset our costs, please go to: >> https://www.paypal.me/stumurray >> >> All Contributions are greatly appreciated! >> > > _______________________________________________ > > This list is supported by the generous donations of our members. If you wish > to make a contribution to offset our costs, please go to: > https://www.paypal.me/stumurray > > All Contributions are greatly appreciated!
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