DB 880 wont start

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Guest

RE: DB 880 wont start

Post by Guest » Thu Apr 26, 2012 8:17 am

Turn the fuel cut-off tap off, remove the sediment bowl, remove the rubber sealing ring above the bowl and turn it over and refit. Refit the bowl and tighten the styrup, turn on the fuel tap, let the fuel run into the sediment bowl by slackening off the styrup to allow the fuel to run until it starts to overfill and run over and tighten the styrup up again. I've said this because sometimes when the sediment bowl has been removed, when you re-install it to the lift pump if there is not enough fuel in it it will not create the nesecary pressure to feed the injector pump properly with the correct volume of fuel, it has the effect of fuel starvation. This may not be your problem but the first place to start your investigation.

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erkki
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Joined: Sun Apr 09, 2006 12:02 pm
Location: North Finland

RE: DB 880 wont start

Post by erkki » Thu Apr 26, 2012 5:15 pm

Agree Powerrabbit,

The tractor is starving fuel or has still some air in the pump. Even if there is some grey exhaust when cranking the mixture may be too lean for firing up. A tiny, yes tiny, sniff easy start may do the tirck and make the engine run. If its just air problem the problem may cure itself. If there is an air leak, the tractor will stop afrer running for a while.

RGDS erkki

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richbug
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Joined: Mon Mar 22, 2010 5:32 pm
Location: Pennsylvania, United States of America

RE: DB 880 wont start

Post by richbug » Fri Apr 27, 2012 12:05 pm

What sort of air temperatures are you having where you are? Diesels start much better with warm air. Since it is warming in the Northern Hemisphere, I would imaging it is cooling in the South.


30 seconds, timed? or seems like? 30 seconds is about the limit that I will crank one before giving the starter a rest for fear of overheating it and throwing solder. Lucas starter motors are finicky to start with, no sense in pushing them to the breaking point.
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db2d
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RE: DB 880 wont start

Post by db2d » Thu May 03, 2012 10:57 pm

Do you use the cold start device on the injector pump

SteveCollett
Posts: 599
Joined: Wed Sep 24, 2008 8:17 am
Location: Suffolk

RE: DB 880 wont start

Post by SteveCollett » Fri May 04, 2012 10:00 am

I would consider replacing the lift pump
there is a fiar chance the actuator is well worn by now
also it could be muck in the poppet valves
how is the diaphragm?
at the same time I would replace the filters as well
anything slowing up the fuel to the injector pump will not be helping

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tdickson
Posts: 85
Joined: Thu Oct 29, 2009 3:57 am
Location: Wyee, New South Wales, Australia

RE: DB 880 wont start

Post by tdickson » Sat May 05, 2012 11:29 am

Hi palmdale25.

Any luck with the 880? Which part of Aus are you from?
1967 David Brown 880A / 540113
1968 David Brown 880A / 550795

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jimc1390
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RE: DB 880 wont start

Post by jimc1390 » Sat May 05, 2012 8:28 pm

seeing as it use to start fine but is now playing up after you have played around with fuel system, i suspect air is leaking into the system, the fuel pump is probably remaining primed but needs cranking to get the system preasure back up to where it should be, you could possibly eliminate this by pumping the lift pump up before starting,
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