Interesting engine failure

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alfricke's picture
alfricke
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Posts: 92
Interesting engine failure

Jubilee ('36 Mk2 #1867 Universal 35B) suffered an interesting engine failure a couple weeks back. I had motored most of the way to Drake's Bay (Near San Francisco). When I shut her down, the oil pressure alarm did not sound like it usually does. I quickly started her back up, no problem, but again the oil alarm did not go off during the pre-start routine. Figured the alarm itself had quit. At 0530 the next morning, in dense fog, the engine would not start. I checked filters and fuel flow with my auxiliary fuel pump. No air in the system. On a hunch, I tried starting the engine using the auxiliary fuel pump. Varuuum! She started right up, telling me the problem was at the regular fuel pump. Looking at it I discovered that the white wire lead was snapped off at the crimp! (Perhaps from 16 years of engine vibration/metal fatigue?) I cobbled together a new spade fitting and the problem was resolved, and yes, the low pressure alarm now sounds when it should (due to the relay). It did leave me wondering how the engine ran with no fuel pump coming into the anchorage and how it could start up immediately without the pump. Is there somehow enough engine suction or gravity feed to allow this? Thoughts anyone?

One moral to this is that the  auxiliary electric fuel pump I installed really comes in handy for filter changes as well as being a good back up.

Al Fricke Jubilee

Al Fricke
S/V Jubilee San Francisco Bay
Catalina 36' MkII  #1867
Universal 35-B

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clennox
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Joined: 3/31/14
Posts: 212

Al
I have heard that our boats will run on gravity fuel flow alone. I'm just guessing that your tank was full and the pump quit while you were motoring. Already having a good siphon established it supplied enough fuel to the injector pump.
Our supply/lift pumps only deliver fuel to the injector pump.
Only a guess.

Chuck Lennox
97 MKii Ventura Ca
Island Girl Hull #1611

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rjwilson
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Joined: 4/28/14
Posts: 60

Al,
 
I had the same problem with my fuel pump, and it took a year for me to solve it.  An inspection of the connector that it was arcing so I assumed the pump was running intermittently most of the time.
 
It’s good to hear that I’m not the only one that had this issue.
 
Bob

Bob Wilson
S/V Morning Breeze
2003 Catalina 36, Hull 2122
York River Yacht Club
Williamsburg, VA

Talisman
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Joined: 12/26/07
Posts: 244

Could you show pictures of your auxiliary pump setup?

Enrique
Talisman
1998 36 MK2 Hull #1673
Tall Rig Wing Keel
M35BC engine
Old Saybrook, CT Summer
South Glastonbury, CT Winter
 

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alfricke
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Joined: 4/14/09
Posts: 92

 The basic set up is valve that diverts fuel (prior to the pump on the engine) through the auxiliary electric pump which has an on/off switch that is accessible from both the front and the back of the engine. It is simple and inexpensive and a very nice thing to have. It allows bleeding by one person and is also a back up. It is something I added after a bad experience while singlehanding on a very rollie chaotic ocean. I will take some pics and post them. 

Al Fricke
S/V Jubilee San Francisco Bay
Catalina 36' MkII  #1867
Universal 35-B

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alfricke
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Posts: 92

Here are a couple of pics showing my auxiliary electric fuel pump

Al Fricke
S/V Jubilee San Francisco Bay
Catalina 36' MkII  #1867
Universal 35-B

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