Hello all, I think I would reiterate what a few have said here, but the diagnostics are as follows: 1). If the engine is making no noise whatsoever when the pushbutton switch is depressed, check the switch first. You should be able to do this by jumping the contacts momentarily. I had a switch fail, and its pretty easy to find a replacement. Based on your description, I would not expect a hydrolock, but of course, its best to close the seacock until you can get the engine running so you don't suck water into the engine. Jump other places as needed to confirm the issue.
2). As for it dying there are two issues to suspect. First is the coil. When the get hot, they can fail, and then allow you to restart at another time. That has nothing to do with the engine not turning over, though (of course). The second, and also very high on potential failure issues is the combination of points & condenser. After 10+ years of owning our 1977 C&C 27 MKIII, I converted it to electronic ignition by ordering the parts from Moyer Marine. When I got done adding up the cost of points, condenser, cap & rotor, a couple changes and it almost equaled the cost of the Moyer conversion. It was VERY easy to install, and the reliability of the motor jumped 100%. No more overheated coils, burned distributor caps, and even the plugs ran a lot cleaner. Just the ability to rely on the engine to a much greater extent was worth the money. Crank the engine with a plug out, stuck in the plug wire cap and grounded to the engine, and if you don't have spark, its definitely an ignition issue. If the coil is oily on the outside (or is cracked), then definitely replace the coil as a first step. By the way the coils and even the points & condensers can normally be found at an auto parts store - look up the conversions online, or if you can't find them, email me and I can probably get them for you. 3). Dying can also be caused by a carburetor problem, most likely a clogged jet. The carburetor is again, VERY easy to overhaul, and if you are gentle taking it apart, you can probably do it without replacing any of the gaskets in a pinch. I did so for years, and never had to buy new gaskets, but of course others here might criticize me for not doing so. Again, this would have nothing to do with the engine not turning over. Don Moyer's A-4 manual is also highly recommended. It's not cheap, but between the well written descriptions and the photos, its a real lifesaver (much better than the Yanmar manufacturer manuals IMHO). Feel free to drop me an email directly or call my number below if you need more info. Kindest Regards, Bruce Whitmore (847) 404-5092 (mobile) bwhitm...@sbcglobal.net From: Michael Cotton via CnC-List <cnc-list@cnc-list.com> To: Jeffrey Nelson via CnC-List <cnc-list@cnc-list.com> Cc: Michael Cotton <mpc51...@yahoo.com> Sent: Monday, September 18, 2017 8:40 PM Subject: Re: Stus-List A4 Cutting Out I had an ignition coil fail on my A4. It would start and run then cut out. Sometimes restart sometimes not. A coil replacement corrected the problem. On Monday, September 18, 2017, 5:38:28 PM MDT, Jeffrey Nelson via CnC-List <cnc-list@cnc-list.com> wrote: Might try checking the ground on the engine. Mine had that problem a number of years ago, taking it off and cleaning it up solved the problem. Of course mine is a diesel and yours is gas, but I would expect that the ground would be wired similarly. Food for thought. On 9/18/2017 8:15 PM, Randy Stafford via CnC-List wrote: Hi Doug, No noise whatsoever when I pushed the starter button. It was as if there wasn’t enough current to activate the starter, but the batteries *did* have enough charge at the time. Cheers, Randy On Sep 18, 2017, at 3:08 PM, svpegasus38 via CnC-List <cnc-list@cnc-list.com> wrote: Randy, Are you getting any noise out of starter (click) when trying to start? Even if you are hydro locked you should hear a click at the starter solenoid if electrics are good. Check the coil for cracks, check points and condenser, or electronic pick-up, ignition switch for loose/bad connections. Good luck. Sent from my T-Mobile 4G LTE Device Doug Mountjoy POYC Pegasus (for sale) Lf38 Rebecca Leah LF39 -------- Original message -------- From: Randal Stafford via CnC-List <cnc-list@cnc-list.com> Date: 9/18/17 07:29 (GMT-08:00) To: cnc-list@cnc-list.com Cc: Randal Stafford <randy.staff...@comcast.net> Subject: Stus-List A4 Cutting Out Listers- I’m having a problem with my Atomic 4, and hoped you might have some thoughts to share. When I went out for a sail yesterday, she started right up, as always. But then she cut out heading away from the marina. Initially I suspected a fuel flow problem, as the petcock on the tank has become difficult to turn. After ensuring the petcock was in the open position and the tank was full, she started right up again and ran smoothly for a good 10 minutes. Then she cut out again, and wouldn’t start back up after some cranking. I sailed for a couple hours anyway. When I tried to start her to come back in, nothing happened when I pressed the starter button. I assumed my batteries didn’t have enough amperage for the starter, after all the previous cranking, though my other electronics were running fine. So I docked under sail power, pulled the batteries, and brought them home to charge. They both tested at 12.7 volts and 83% charge when I put them on my charger. Now they’re both at 100% and 12.9 volts. So I now suspect a faulty ignition circuit, and possibly a faulty starter circuit. Perhaps a loose connection or broken wire is having the same effect as pushing in the ignition switch. I’ve yet to get into the lazarette and start tracing the wiring and testing with a multimeter, but that’s my next step. I thought I’d write the list first to see if anyone has any quick hypotheses. Thanks in Advance, Randy Stafford S/V Grenadine C&C 301- #7 Ken Caryl, CO _______________________________________________ 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! -- Boat_SigCheers, Jeff Nelson Muir Caileag C&C 30 Armdale Y.C. Halifax | | Virus-free. www.avast.com | _______________________________________________ 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!