I have a Universal M4-30 and the parts manual has a reference table stating your 5416 was replaced by their M20. It's 16Hp. My manual does not show it but if the hole in the engine block is not threaded, it may be a hole used to indicate a bad engine seal?? I'm guessing. Hope it's something simpler. Chuck S
> On 06/09/2026 9:43 AM EDT Todd Williams via CnC-List <[email protected]> > wrote: > > > Indigo Out We Go (1980 C&C 34) went in the water on Wednesday! We motored > three hours to our mooring and as we were leaving the boat I noticed an oily > streak on the outside of the hull at the bilge output. > > I went back yesterday to investigate and found the bilge full of oil. > Dipstick reads low so I added a quart of oil to identify the details of the > leak. Oil is pouring out of a manufactured hole in the engine block (see > video) in the front right part of the engine below the raw water pump and > left (when viewed from the salon) of the front motor mount. Of course, very > difficult to access. I don’t see a plug lying loose in the bilge nearby. > > https://drive.google.com/drive/folders/1kovA-y1sGBB22IaUBoVRDabmfSAiWcTL > It is a manufactured hole but it is not described in the Westerbeke parts > manual (picture in folder). It is near part 3 (plug) but there are two holes > in that area and the one that I have leaking is different. It does not look > threaded. I can stick a wire up it about 2”. > > As anyone experienced this leak? What was your solution? > > Is there a knowledgeable professional source on Universal / Westerbeke diesel > engines from 46 years ago? > > Thanks, > > Todd > Saco, ME > Please help cover the costs of maintaining this list by making a small > contribution using PayPal at: https://www.paypal.com/paypalme/stumurray All > contributions are greatly appreciated. >
Please help cover the costs of maintaining this list by making a small contribution using PayPal at: https://www.paypal.com/paypalme/stumurray All contributions are greatly appreciated.
