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post #29 of Old 10-01-2012 Thread Starter
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eherlihy's Avatar
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Re: Universal M25 losing power

Originally Posted by Maine Sail View Post
I take a stab;

*Antifreeze tank "appears" mounted too low [It was - now corrected]
*Fluid not filled to correct level
*Leaking RWP face plate gasket [It was - the pump has since been rebuilt, and I have a complete spare]
*Leaking water seal on RWP [Yep - that's #1]
*Alternator adjustment arm on backwards [The entire alternator mount was junk - that's #2]
*Crimp fitting on non-factory temp T not heat shrunk
*Zip tie holding coolant hose is plastic (could melt) [or chafe through - that's #3]
*Poor routing of coolant hose around alternator [Yup - also #3]
*Hose clamp too long
*Ground wire under alt adjustment not ideal location
*Aftermarket oil filter (larger OD) impinging on factory alternator bracket
*Alternator bracket had not been updated despite the timing gear case obviously having been replaced. [also #3]
* Positive 12V wires not properly secured appears to be rubbing on the manifold [That's #4]
*Non-factory tee added to t-stat housing which can lead to improper flow around temp sender/alarm. Should be removed and plumbed correctly. [That's #5]
*Fuel hose on left should be better secured so as not to chafe on RWP
*White 12V wires on left appear to be chafing on fuel bleeder screw & air filter
*FWP, based on corrosion, appears to leak or has leaked [That's #6]
*PCV hose impinged and possibly pinched closed by alternator bracket
*Plastic zip ties in engine spaces are ABYC non-preferred.
*90 degree elbow on RWP can be a debris catcher and can increase head pressure [That's #7]
*Fuel hoses should be double clamped (does not look it but hard to tell)

Sorry I got more than 7 though some are hard to tell from the angle....

You win the prize!

Here is what the SAMS / AMS (& ABYC) Certified Surveyor said about the overall condition of the motor;
Make: Universal Location: Under Cockpit
Model: M 25 Ser.No.: [redacted]
No.Cyl.: 3 H.P.: 25 R.P.M.:
Year: 1987 Hrs.: 171 ? Overhauled:
Fuel System: Hose, 12 VT Fuel Pump, Racor Filter Separator
Cooling System: Fresh Water
Sea Strainer: External and Bronze Internal
Exhaust System: Raw Water Through Vetus Muffler and Exhaust Hose
Electrical System: Alternator Charges Both Batteries.
Ventilation: Natural, Good.
Reduction Gear: Hurth
Engine Beds: F.R.P.
Drip Pan: F.R.P.
Instruments and Monitoring: Universal
Controls: Edson Cables
Engine Started and Ran Very Well
With the exception of the above I find this vessel to be in Good Structural, Mechanical and Cosmetic Condition. If vessel is provided with the proper care and maintenance and the above recommendations are met it should provide many more years of service.
And that was the SECOND surveyor that I hired!

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USCG Licensed OUPV Captain, ASA 101/103/104/105/106/118 Instructor - Also certified in Marine Electrical Systems

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Last edited by eherlihy; 10-01-2012 at 10:11 AM.
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