I tried starting my yanmar yesterday and after waiting 20 seconds with my key turned to the on position, I pushed the starter button and nothing….. waiting another 10 seconds again nothing. I switched to the other bank of battery pushed the button nothing. Only after waiting another 20 seconds did the engine turn over. I understand the concept of having a good ground and wire connections so last year after purchasing the boat I replaced the battery wire cables as they were corroded and all connections that looked suspect. Also changed out to a new starter button. Batteries are new as well. I can only think it maybe I need a new glow plug. Or maybe I need to wait longer for my glow plug but it seems like it is too long to wait. Any thoughts. My Hunter is 12 years old and the privies owner kept no records as to service routine.
could it be my glow plug ?
- Thread starter eamaral
- Start date
I guess I need to add to my previous post is … I have 2002 Hunter 340, the procedure to start, I believe, turn key to right wait as signal beeps 30 times then push starter button.
I don't think those late model Yanmars have glow plugs. It been a couple of years, but the Yanmar in the BVI charter Beneteau we had just required turning the key to on, then pressing the start button. No preheat. The beeping could be the high temp or low oil pressure alarm that sounds before as you turn key to "on" before pushing start button. It should turn over as soon as you hit the start button. Someone else will jump in and correct me if I am wrong about the start prodecure
I have never heard about the small Yanmars having glow plugs.
You can try advancing the throttle to about 1/2 or so and see if that helps.
You can try advancing the throttle to about 1/2 or so and see if that helps.
No Glow plugs that I know of but I would check the starter solenoid connections. There have been several reports of the starter not engaging.
By "nothing" do you mean the engine did not turn over? Glow plug or not the engine should turn over. And I don't think you have glow plugs.
With a helper check the voltage on the solenoid control (small wire) wire while it is connected and drawing current. Just probe at the connection at the solenoid and engine ground. have the helper hit the start button and note the voltage. You have to have at least 9.5 volts (with current flowing not disconnected and no current flowing) Repair the 11+ quick connectors between the helm and solenoid. Or just neuter the connectors as you will not be taking the engine out much.
With a helper check the voltage on the solenoid control (small wire) wire while it is connected and drawing current. Just probe at the connection at the solenoid and engine ground. have the helper hit the start button and note the voltage. You have to have at least 9.5 volts (with current flowing not disconnected and no current flowing) Repair the 11+ quick connectors between the helm and solenoid. Or just neuter the connectors as you will not be taking the engine out much.
The boat's factory fitted Yanmar engine does not have a glow plug. The fuel is heated to its combustion temperature by compression in the cylinders. To count the beeps of the warning buzzer after turning the key serves no purpose. Your problem is a common one and likely the inability of the wiring from the engine start push button to conduct enough power to activate the solenoid. Check the archives as there are a couple of solutions listed. The one I like best is to rewire and relocate the push button switch to somewhere inside the cabin near the companion way. To start the engine needs to crank to build up the adequate compression to ignite the fuel. Depending on the number of hours on your engine it may be required to open up the throttle some when starting the engine from cold.