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Go Back   SailNet Community > On Board > Gear & Maintenance > Engines > Diesel > Westerbeke - no start post inj. pump rebuild.
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Thread: Westerbeke - no start post inj. pump rebuild. Reply to Thread
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Topic Review (Newest First)
10-30-2014 03:28 PM
thevdeub
Re: Westerbeke - no start post inj. pump rebuild.

Yeah. I realized after googling Injector Port Holes
What should be a good cranking time for the engine. I know more than 20s could damage the starter. But if the pressure is correct, the engine should start in what ? like 2-3 try of 5s each ?

I found this post very detailed about bleeding a Westerbeke 40.
Winterizing Sea Dragon

But still no luck so far.
10-30-2014 10:28 AM
Down2TheC
Re: Westerbeke - no start post inj. pump rebuild.

That was a joke. Bleeding procedure is not impacted by the porthole position.
But if you're getting flow at the injector nuts, you should be golden. You won't see any evidence of pressure there. Verify each injector nut has flow one by one. If I go that far, the engine normally fires up on 2 or 3.
10-29-2014 07:35 PM
thevdeub
Re: Westerbeke - no start post inj. pump rebuild.

Quote:
Originally Posted by Down2TheC View Post
have to conclude that the bleeding process requires the portholes to be open.
Could you elaborate ? after changing my filters, I think I am lacking pressure at the injector level and think I am missing something in the bleeding process.
any help appreciated.
07-05-2012 01:51 PM
Down2TheC
Re: Westerbeke - no start post inj. pump rebuild.

While that's true, it wasn't the cause of the previous failure. When I got the torque wrench I found that I had more than prescribed torque and a subsequent compression test proved that the injector install was fine. (tested via glow plug ports.)

As for the manual, I did that bleeding procedure many times because there wasn't much else to do. As rationalization I'm claiming that the shop found something wrong when they put it on the test bench. They had it in there for an hour before calling me in to see it working. Not sure if that's true... but it relieves me of responsibility for loss of a month on the water. So that's my story and I'm stickin' to it.

6 hours on the lake yesterday (where temps were 10-15 degrees cooler than the 99 on shore) made it all better anyway. I have a boat again so why ask why!
07-05-2012 10:26 AM
Stu Jackson
Re: Westerbeke - no start post inj. pump rebuild.

Quote:
Originally Posted by Down2TheC View Post
FYI - After pulling pump and injectors and taking them back to the shop, everything looked great on the bench. All injectors firing.

So I put it all back together and now it works like a dream. Can't figure out what was different so I have to conclude that the bleeding process requires the portholes to be open. That was the only difference today!

But it works so I won't question why. Thanks all for the suggestions.
G;ad to hear you had success. Betcha feel a LOT better.

What does your owner's manual say about bleeding? Sometime RTFM does actually help. Could it be that when you replaced them you torqued them correctly?
07-02-2012 03:24 PM
arf145
Re: Westerbeke - no start post inj. pump rebuild.

Hopefully, other Westerbeke owners are making a note of that little-known porthole requirement
06-28-2012 04:22 AM
Down2TheC
Re: Westerbeke - no start post inj. pump rebuild.

FYI - After pulling pump and injectors and taking them back to the shop, everything looked great on the bench. All injectors firing.

So I put it all back together and now it works like a dream. Can't figure out what was different so I have to conclude that the bleeding process requires the portholes to be open. That was the only difference today!

But it works so I won't question why. Thanks all for the suggestions.
05-30-2012 02:37 AM
Down2TheC
Re: Westerbeke - no start post inj. pump rebuild.

Injectors and pump are doing their job. Now I'm thinking I was just too much the wuss when torquing down the injectors. I did it by feel, but I'll go back with a torque wrench tomorrow. 12 ft.lbs. may be more than I'm thinking.
05-28-2012 04:16 AM
sigmasailor
Re: Westerbeke - no start post inj. pump rebuild.

Cannot place what you mean by crushable heat sheat, pictures would help.
If you test all 4injectorts you can hand crank the engine and see if pump and injectors deliver.
I agree with you that the sealing of the injectors in the head is a possible problem. Better make shure that was done as per manual. Did you forget to remove the previous washers and now have two?
05-27-2012 09:50 PM
Down2TheC
Re: Westerbeke - no start post inj. pump rebuild.

All good theories. But doesn't explain why it won't fire on WD40.

How about this... All symptoms point to loss of compression. What if the shop gave me the wrong copper washers that go around the nozzle nut on the injectors. That could explain weak to no compression in all 4 cyls. Shooting some soapy water around the base of the injectors and cranking should lead to bubbles if air is escaping at the base of each.

I'll have to check with my T37 forum and see if our injectors actually had those think copper washers. That's the only thing I didn't take a picture of as I broke things down. The injectors were and afterthought and didn't seem very complex so I just popped them out and delivered them to the shop. Can't recall what was on them when I popped them out. They do have that crushable heat shield at the tip.
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