New to the Westerbeke diesel generator - is this as loud as it should be?

The 7.6 BTD's use Mitsubishi four-cylinder engines. It's important the valve lash be adjusted per the maintenance schedule. The injectors if over 1000 hours should be sent out and cleaned/tested. You will be amazed how a valve lash and injector service will quite these engines down. Upgrading the water-lift muffler and changing the rubber isolators will also go a long way to quite the boat down. But the most improvement will be a sound enclosure.
Starting the generator - if your setup doesn't have the Monoplex module (looking at your video, it doesn't) then press the Preheat for twenty seconds - it's not really the glow plugs (unless you are in cold climate) that aids in the starting but the lift pump priming the system that gets the generator up and running. The Prestart button does three things - activates the glow plugs, activates the lift pump (that clicking noise), and bypasses the oil pressure switch. Once the machine starts and oil pressure comes above 10 psi the Prestart button can be released.
If, on the other hand, it will not remain running or is spewing black smoke there are other issues. The fact you must crank the engine multiple times when cold lends service is needed. These little engines are very robust.
And, as an edit - never continuously crank these generators; you will fill the cylinders with raw water and that will be a very bad day.
Thanks, yep I read that about raw water ingestion so I stop turning over after about 10 seconds. I was hoping to capture that in that video, of course it fired right up then.

Cold start in this case meant the generator was cold, not the outside air temperature, it was probably in the 60s when I started it Saturday and it took a while.
 
Preheat for 20 seconds and press start that's all there is with mine. First time every time.
 
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Mine starts and runs fine. but i noticed while running my bilge pump keeps running. I noticed water coming out u shaped pipe mounted above the water line. it has a tee of it with a hose draining in to the bilge
 
Mine starts and runs fine. but i noticed while running my bilge pump keeps running. I noticed water coming out u shaped pipe mounted above the water line. it has a tee of it with a hose draining in to the bilge

I'm speculating that you are referring to the siphon break which works like this:

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I haven't seen one with a drain back hose to the bilge......That would seem to defeat the purpose of the duckbill valve which lets air in and keeps water and exhaust gas from leaving the siphon.
 
I'm speculating that you are referring to the siphon break which works like this:

vented-loop-illustration.ashx


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I haven't seen one with a drain back hose to the bilge......That would seem to defeat the purpose of the duckbill valve which lets air in and keeps water and exhaust gas from leaving the siphon.

sorry for hijacking post.
yes thats the part. mine is brass mounted above the generator. So are you saying its not working correctly?
 
sorry for hijacking post.
yes thats the part. mine is brass mounted above the generator. So are you saying its not working correctly?

Their purpose is to create an air break by letting air in...... not let water out of the joint. If you have a picture of yours that would help determine why they put a drain hose on it.

A drain hose is actually a terrible idea because it is pumping water AND Carbon Monoxide into the bilge.
 
The air break prevents siphoning of water back into the generator which is pretty important especially if the generator is below the water line on the boat. In your case the one way check valve has failed and allowing water to flow from the check valve rather than just air flowing in. There should not be any hose on that fitting as PlayDate says above, that will affect the system to allow air in. I believe in the bronze ones the air check valve is replaceable - if you can find one. Get a replacement composite one - they are inexpensive.
 
Their purpose is to create an air break by letting air in...... not let water out of the joint. If you have a picture of yours that would help determine why they put a drain hose on it. finally took a picture for some reason I thought it was bronze. It’s plastic lol
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A drain hose is actually a terrible idea because it is pumping water AND Carbon Monoxide into the bilge.
 

You have a Vetus siphon break. The valve in the top portion needs to be replaced. Lots of YouTube videos on the issue of the valve when it fails leaking into the bilge. I'm not concerned about it being made of plastic. Vetus makes great products.

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I would replace the rubber overflow hose with a clear one so that you can see if there is water in it.
 
8.0 BTD Westerbeke... The raw water pump is made by Johnson Pumps, does anyone know what the part number is?
 
I just got it from Marine Parts Source for FREE !!! I won the drawing they were having...

Generator Raw Water Pump

SKU: MMDW-44747

1 $480.65
Subtotal $480.65
Discount (JP500WINNER) -$480.65
Tax $0.00
Shipping & Handling $0.00
Grand Total $0.00
 
I just got it from Marine Parts Source for FREE !!! I won the drawing they were having...

Generator Raw Water Pump

SKU: MMDW-44747

1 $480.65
Subtotal $480.65
Discount (JP500WINNER) -$480.65
Tax $0.00
Shipping & Handling $0.00
Grand Total $0.00
That's crazy cool!
 

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