Moyer Marine Atomic 4 Community

Moyer Marine Atomic 4 Community http://www.moyermarine.com/forums/ Moyer Marine Inc. Parts and Services for the Universal Atomic 4 Engine en Mon, 06 Sep 2010 13:53:01 GMT vBulletin 60 http://www.moyermarine.com/forums/images/misc/rss.jpg Moyer Marine Atomic 4 Community http://www.moyermarine.com/forums/ Leaking Carb..choke lever?!?!? http://www.moyermarine.com/forums/showthread.php?t=4497&goto=newpost Mon, 06 Sep 2010 13:01:30 GMT Hi All. I am in need of advice. Getting ready for a Sunday sail, I discovered to my horror, about 1 gallon of gasoline in my bilge. I have a late model A-4 with Series 68 carburator. I traced the fuel leak to somewhere in my carb. I have never taken off or maintained my carb since I... Hi All.

I am in need of advice.

Getting ready for a Sunday sail, I discovered to my horror, about 1 gallon of gasoline in my bilge.

I have a late model A-4 with Series 68 carburator.

I traced the fuel leak to somewhere in my carb. I have never taken off or maintained my carb since I purchased from PO two years ago.

I am on an Ericson-29 so my access to the carburator side of the engine ranges from extremely tight to nearly impossible to reach. (I will post some photos soon.)

I shut down my fuel valve at the fuel tank, soaked up what gas I could and shut off my electrical system.

After some 2 hours of observation and the use of mirrors, I came to the conclusion that the fuel leak seams to be coming from the Choke Lever. I thought it would be coming from the 1/8 pipe scavange tube connection or a gasket higher up, but no, it seems to be from the Choke Lever shaft/plate.

I am on the verge of removing my carburator all together, bring it home and address the leak issue (If I can).

Does anyone have experience with a leaky carburator in the Choke Lever area? Does this sound possible or right?

Thanks

Matt ]]> Fuel System sproption http://www.moyermarine.com/forums/showthread.php?t=4497 What about the little things? http://www.moyermarine.com/forums/showthread.php?t=4496&goto=newpost Mon, 06 Sep 2010 02:18:33 GMT Mates,
I've learned on this forum about maintaining the A4 to keep her going longer than anyone expected. It's generally accepted around here that regular oil changes, impeller replacements, fuel filters, spark plugs and acid flushes can keep the engine in good running form.

What I don't read about very often are some of the little things not related to engine performance that if let go, can make our lives miserable. Here are some that come to mind (certainly not a complete list, please add your own):

Motor mount adjustment nuts. If they're not tight there's a risk of the engine falling into misalignment. Just ask Shawn.
When's the last time you checked the tightness of the shaft coupler set screws? Throwing her into reverse and having the shaft slip out isn't unheard of. Keep those set screws tight and no problemo.
When was the last time you lubed your bowden cable (the accurate term for the choke cable)? I did mine today with Lewmar winch grease and oh my, what a difference. A stiff cable might not allow the choke to fully close leading to hard starting or perhaps a broken cable.

And so on. ]]> General Maintenance ndutton http://www.moyermarine.com/forums/showthread.php?t=4496 Oil Leak From Pan Plug http://www.moyermarine.com/forums/showthread.php?t=4495&goto=newpost Sun, 05 Sep 2010 15:01:44 GMT Hi, I have a substantial oil leak from the pan plug below the carb. This seems to contradict what i read elsewhere that the oil level is below the plug. I plan to suck the oil out of the dipstick hole, somehow remove the square headed plug (not sure if i can get a socket to fit it, and my... Hi, I have a substantial oil leak from the pan plug below the carb. This seems to contradict what i read elsewhere that the oil level is below the plug. I plan to suck the oil out of the dipstick hole, somehow remove the square headed plug (not sure if i can get a socket to fit it, and my adjustable wrench doesn't get down there), re-tap the hole to clean it up and install a new hex headed plug.

Any advice or ideas on how to get the old plug out and whether the re-tap and new plug will fix it?

Thanks,
re-manufactured A-4 in 1983 C30 ]]> Troubleshooting C3058 http://www.moyermarine.com/forums/showthread.php?t=4495 A stuck engine head http://www.moyermarine.com/forums/showthread.php?t=4494&goto=newpost Sat, 04 Sep 2010 17:10:27 GMT A stuck exhaust valve has forced me to take off the head. I've tapped the valve from the outside, put much MMO into the offending cylinder, and finally conferred with MM and I'm working on getting the head off. I removed the exhaust manifold easily and the head nuts came off without much difficulty. Here is my problem. I can not get the head off. I've tapped it, I've used a putty knife to get between the block and the head.

Is there a trick that I don't know about? How hard can I wack on this this. One thing to note is there is a stud that holds the thermostat housing that looks to be stuck. The other stud came out as I "tried" to unscrew the nut. See pictures. All the other studs look to be free. I just cant seem to get the head and block to separate.

Any and all help is appreciated,

Thanks
Boatminion

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]]> General Maintenance boatminion68 http://www.moyermarine.com/forums/showthread.php?t=4494 Fuel Tank Gasket Fiasco http://www.moyermarine.com/forums/showthread.php?t=4493&goto=newpost Sat, 04 Sep 2010 03:24:39 GMT Last year I had occasion to clean out my aluminum fuel tank to remove water and stray bits of stuff. Amazing what was in there. When re-closing the tank, the main fuller hose plate gasket was not in great shape. A bit deformed, etc. So, I used gasket sealer (Permatex Orange) to help seal... Last year I had occasion to clean out my aluminum fuel tank to remove water and stray bits of stuff. Amazing what was in there.

When re-closing the tank, the main fuller hose plate gasket was not in great shape. A bit deformed, etc.

So, I used gasket sealer (Permatex Orange) to help seal it.

Seemingly that worked, no leaks, and things seemed OK.

This year I happened to check the contents of my Racor fuel filter, and found bits of orange stuff.

So, I decided to open the tank again, to check for problems.

When I opened it up, I was surprised to find that the excess Orange Sealer had liquefied, and was sitting all over the bottom of the tank in slimy streaks.

Needless to say, I cleaned all that mess up, and decided to fabricate a nice new rubber gasket out of new rubber gasket material.

Much better now!

My lesson learned: That Permatex Orange is not gasoline compatible!

I did find a Permatex Ultimate Grey which is gasoline resistant

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]]> Fuel System rpowers http://www.moyermarine.com/forums/showthread.php?t=4493 New Fuel tank, no fuel http://www.moyermarine.com/forums/showthread.php?t=4492&goto=newpost Sat, 04 Sep 2010 03:02:24 GMT I installed a new fuel tank on my Morgan, hooked up the hoses, added fuel and hit the switch but the engine never got a spark. After some checking, the fuel was not making it to the fuel filter. I was expecting the fuel pump on the Atomic 4 to pull the fuel in from the tank once I started cranking.... I installed a new fuel tank on my Morgan, hooked up the hoses, added fuel and hit the switch but the engine never got a spark. After some checking, the fuel was not making it to the fuel filter. I was expecting the fuel pump on the Atomic 4 to pull the fuel in from the tank once I started cranking. Crazy thought I guess. The tank is higher than the engine but the fuel line comes out of the top of the tank before heading down to the fuel filter and engine, so gravity is going to need some help to start. How can I get it to the engine. Can I prime it through the flame arrester? I can get some flow of fuel by sucking on the hose before it gets to the fuel filter, but all in all that seems like an unhealthy approach. I seem to recall somewhere that the fuel pump on the Atomic 4 didn't start working until the engine was running. That will make things a little difficult. Any thoughts on how I can get the fuel to the engine? ]]> Fuel System SailingAlien http://www.moyermarine.com/forums/showthread.php?t=4492 Propeller?? http://www.moyermarine.com/forums/showthread.php?t=4491&goto=newpost Fri, 03 Sep 2010 20:18:46 GMT the prop on my boat was covered with barnacles,but when I scraped down the bottom of my boat I also scraped down the propeller,and it came pretty clean,was thinking about using some wet sanding paper to it as well is this all ok or should I buy a new prop? the prop on my boat was covered with barnacles,but when I scraped down the bottom of my boat I also scraped down the propeller,and it came pretty clean,was thinking about using some wet sanding paper to it as well is this all ok or should I buy a new prop? ]]> Announcements craig deem http://www.moyermarine.com/forums/showthread.php?t=4491 Blown head gasket or??? http://www.moyermarine.com/forums/showthread.php?t=4489&goto=newpost Thu, 02 Sep 2010 17:06:41 GMT Recently acquired a good old Pearson Triton with an Atomic 4. Motor ran well for an hour or so, then lost compression on the two rear cylinders. I can see/feel that the valves are opening and closing. Question is: Is this most likely a blown head gasket (that I can fix in the boat), or... Recently acquired a good old Pearson Triton with an Atomic 4. Motor ran well for an hour or so, then lost compression on the two rear cylinders. I can see/feel that the valves are opening and closing.

Question is: Is this most likely a blown head gasket (that I can fix in the boat), or something more dire.

If this matters: The boat had been unused for a couple of years (out of the water) before I bought it. While the motor was running the temp and oil pressure were normal. I did discover that the choke linkage was miss-adjusted so it was running with an almost full choke - the plugs are very sooty...

First post by the way - love this site!
Barry ]]> Troubleshooting BCinNYC http://www.moyermarine.com/forums/showthread.php?t=4489 <![CDATA[prop pitch & dimensions]]> http://www.moyermarine.com/forums/showthread.php?t=4488&goto=newpost Wed, 01 Sep 2010 20:06:26 GMT My Ranger 29 came equipped with a 2 blade folding prop. I personally cant stand it and would like to replace it with either a stationary 3 blade or maybe even a 3 blade feathering. Problem is that since I believe this to be the original prop I can no longer read any of the info on it. Does... My Ranger 29 came equipped with a 2 blade folding prop. I personally cant stand it and would like to replace it with either a stationary 3 blade or maybe even a 3 blade feathering. Problem is that since I believe this to be the original prop I can no longer read any of the info on it.

Does anybody know what the specs on this or for a new 3 blade would be(pitch, dimension, shaft size, etc...)? I have looked at several different places and recieved several different answers. Anhy help would be truly appreciated. ]]> Fuel System ffmedic http://www.moyermarine.com/forums/showthread.php?t=4488 Atomic 4 sale http://www.moyermarine.com/forums/showthread.php?t=4487&goto=newpost Wed, 01 Sep 2010 01:18:03 GMT 1975 model, runs very well, ready to use.
Electronic ignition and new cables.
Freshwater all its life, does not consume oil (no smoke at the exhaust)
Comes with a spare new mechanical gaz pump, head gasket and transmission cover gasket and impeller.
Also comes with an Indigo propeller 10" X 7.4 three blades.

I am replacing the engine for a diesel because I will cross over the big pond and I need all the autonomy I can get.
Will be available in December 2010 on either side of the Canada / US border near Champlain NY (Montreal, Qc Canada)

Asking price $1,000 or best offer.

Email me for details: rlariviere@videotron.ca
or call me on my cell (514) 213-0594

Richard L. ]]> For Sale Richard Lariviere http://www.moyermarine.com/forums/showthread.php?t=4487 First Posting! http://www.moyermarine.com/forums/showthread.php?t=4485&goto=newpost Tue, 31 Aug 2010 14:49:44 GMT I’m a new owner of a 1979 C&C 36 with the original Atomic 4 engine. I’ve only owned her for less than a year and have been getting to know the engine slowly, very slowly. Although nothing is really wrong, the engine has some quirks to it. She’s been upgraded with electronic ignition and an electric fuel pump and just recently outfitted with a newly rebuilt/cleaned out carburetor. Since the previous owner only spent “some” available time on her she sat at the docks a majority of the time. Starting seems to be difficult after sitting for a week but soon as she fires up (which takes about 5 min.) she’s good for the whole day. It’s sort of like getting your first cup of coffee in the morning.

On my recent outings, and reading here on the forum, I’m noticing that a normal operating temperature should be between 160 and 180 degrees (on the high side). My engine runs about 185 to 190 degrees doing hull speed. I’ve contacted Don Moyer and installed the thermostat by-pass which helped but I think I’m in need of an engine acid flush. Anyone every do that to their engine? I have some reservations as the engine is original and one big rusty pile of machinery.

The boat is well documented but I’m finding that any question I ask the previous owner has left me with more questions so I’m good with exploring, learning and experimenting which is why I’m spending more work days than sailing days. I am happy to say that she’s coming along very well but the real upwind efforts are explaining my time (and expenses) to the wife. ;)

In any case the real obstacle here is working with rust. Rust everywhere and to the point screws and bolts just won’t release without major efforts and as you all know getting leverage in tight quarters is a very big challenge and why work is progressing very slowly. I’ve tried a few penetrating oils but still no luck.

I know this posting is long especially for my first post but its all great topics to discuss and read about as we all have similar experiences.

“Crash” ]]> Introductions Crash http://www.moyermarine.com/forums/showthread.php?t=4485 fuel change... http://www.moyermarine.com/forums/showthread.php?t=4484&goto=newpost Tue, 31 Aug 2010 05:44:21 GMT After running normal gas for a while, and then running non ethanol, is it a good idea to re-time it? Or is it's always a good idea to retime it? ]]> Fuel System Pearson30 http://www.moyermarine.com/forums/showthread.php?t=4484 Fram cartridge filter unit http://www.moyermarine.com/forums/showthread.php?t=4483&goto=newpost Mon, 30 Aug 2010 23:26:08 GMT I have questions about a Fram cartridge filter unit:

1. What does this do?
2. Do I need this plus a polishing filter?
3. How do I service (need to flush it?).
4. Anyone know the cartridge filter PN (I can't read it).
5. Would I ever need to place the whole unit or just the filter?

Thanks,
Phil

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Fram Filter small.pdf (42.6 KB)

]]> Fuel System Phil_E http://www.moyermarine.com/forums/showthread.php?t=4483 Castrol Heavy Duty 30 wt. Oil http://www.moyermarine.com/forums/showthread.php?t=4482&goto=newpost Mon, 30 Aug 2010 21:21:13 GMT Ok. The engine is in the boat and mounted and the shaft connected. It's really close to start up time. I had to make up my mind about the motor oil I wanted to run. Whatever it was I wanted it readily available at all times. I dont want to have to order it.
I looked and looked and looked for someone in the 100 mile radius that "stocked" an SG rated 30 or 10w30 that I could buy off the shelf. No happening !!! At least not in a non-synthetic oil.
So I have decided on using the Castrol HD 30 wt. I think it will work fine but I would like some other opinions good or bad as I have not poured the oil in yet.
Thanks, Butch ]]> Overhaul ButchPetty http://www.moyermarine.com/forums/showthread.php?t=4482 engine is boiling water and flooding http://www.moyermarine.com/forums/showthread.php?t=4481&goto=newpost Mon, 30 Aug 2010 14:15:50 GMT Here is an annoying problem:
After shutdown, the cooling water BOILS in the manifold. The water won't go backwards through the pump, so it gets pushed into the exhaust and can flood the engine. Kind of like a coffee-maker :eek:
Besides for pulling a hose off when I shut down to depressurize, any ideas?
I am thinking of putting a garden hose to the manifold to see if it needs a bunch of crap cleaned out of it. IMHO it shouldn't be able to get that hot. The anti-siphon valve is no help because it lets air IN, not water OUT. ]]> Cooling System joe_db http://www.moyermarine.com/forums/showthread.php?t=4481