| Author |
Message |
    
Dene
New member
Username: dene
Post Number: 1
Registered: 10-2009
| | Posted on Monday, October 19, 2009 - 03:03 am: | 
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I have just bought a boat with a 80hp Perkins, after running for about an hour if I drop back to idle she stalls, she will restart but stalls when put under the slightest load. let to cool for 20min and all is good again. this makes it a bit hairy coming into a marina. any ideas? |
Glenn Simpson
Member
Username: trackhappy
Post Number: 19
Registered: 07-2009
| | Posted on Monday, October 19, 2009 - 07:14 am: |
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My first guess would be lift pump, weak and at low speed can't keep up pressure. That is easy to change or re-furbish. Otherwise, injector pump would be my next guess. One type has an anti-stall thingy which may be faulty or mal-adjusted. |
Glenn Simpson
Member
Username: trackhappy
Post Number: 20
Registered: 07-2009
| | Posted on Monday, October 19, 2009 - 07:32 am: |
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Here is a link to adjustment if it has this type of injector pump. http://www.tpub.com/content/waterstorage/TM-55-1930-209-14P-9-4/css/TM-55-1930-2 09-14P-9-4_624.htm.I'd be favouring the lift pump theory though.
Let us know what happens. |
Dene
New member
Username: dene
Post Number: 2
Registered: 10-2009
| | Posted on Tuesday, October 27, 2009 - 07:21 pm: |
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Glenn, I think your on the money, I've got a Mech putting a electric fuel pump on and will let you know if this solves the problem.
Thanks for your advice. |
Glenn Simpson
Member
Username: trackhappy
Post Number: 23
Registered: 07-2009
| | Posted on Tuesday, October 27, 2009 - 09:38 pm: |
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Personally, I would have just replaced the mechanical pump. They run for many years and there is no reliance on power to stay running. Either way though, hope it solves the problem. Do let us know. |
Dene
New member
Username: dene
Post Number: 3
Registered: 10-2009
| | Posted on Sunday, November 01, 2009 - 05:14 pm: |
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sorry. 4108. |
Dene
Member
Username: dene
Post Number: 4
Registered: 10-2009
| | Posted on Sunday, November 01, 2009 - 05:16 pm: |
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Well the electric fuel pump did not fix the problem, what's my next move?
I have ruled out any fuel issue up to the injecter pump and any breathing issues. |
Glenn Simpson
Member
Username: trackhappy
Post Number: 24
Registered: 07-2009
| | Posted on Sunday, November 01, 2009 - 11:28 pm: |
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Not many things can stop a diesel engine. Fuel and air in the right quantities at the right time, bit of compression. Getting down to injector pump or lack of compression when hot I am thinking. Get a compression test done, hot and cold I would suggest. (Once had an engine that behaved a little similar and it was a crack in the head which opened up when warm, hence low compression). If they are ok, then get the pump tested or swap it out for a mates one. After that, head off and service including crack test. Sorry it wasn't more simple. |
Dene
Member
Username: dene
Post Number: 5
Registered: 10-2009
| | Posted on Saturday, November 07, 2009 - 08:22 pm: |
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Hi Glenn, I have found a leak in the shaft at the top of the injector pump where the throtle cable attaches. do you think this could create the problem? |
Glenn Simpson
Member
Username: trackhappy
Post Number: 25
Registered: 07-2009
| | Posted on Sunday, November 08, 2009 - 01:54 am: |
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I doubt that would cause it. If anything that wouldleak diesel out as it should be under lift pump pressure. |
