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RW Salnick
 
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Default Detroit Diesel (DD671N) Questions

Wayne, when the engine is in the "hard to start condition", and then it
finally starts, does it do so on all cylinders, or does it go thru a
period where only 1, 2, 3, etc cylinders are firing for a while before
all 6 finally kick in? This could indicate a very slow leak between the
injection pump and the injectors.

bob


Wayne.B wrote:
On Thu, 26 Jan 2006 06:38:42 GMT, "Calif Bill"
wrote:


I think some people put pressure guages before and after the fuel filter.
You would know what the pressure is when starting and if the fuel filter is
getting clogged.



I have vacuum guages on the suction side of my Racors to provide a
warning if they are starting to load up.

Everything looks normal there.

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Wayne.B
 
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Default Detroit Diesel (DD671N) Questions

On Thu, 26 Jan 2006 15:16:07 -0800, RW Salnick
wrote:

Wayne, when the engine is in the "hard to start condition", and then it
finally starts, does it do so on all cylinders, or does it go thru a
period where only 1, 2, 3, etc cylinders are firing for a while before
all 6 finally kick in? This could indicate a very slow leak between the
injection pump and the injectors.


Usually you can hear one or two kick a couple of times and then they
all light up a second or two later.

On a DD671 there is no central injection pump. Each cylinder has its
own driven by the cam as I understand it.

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Bruce in Alaska
 
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Default Detroit Diesel (DD671N) Questions

In article ,
RW Salnick wrote:

Wayne, when the engine is in the "hard to start condition", and then it
finally starts, does it do so on all cylinders, or does it go thru a
period where only 1, 2, 3, etc cylinders are firing for a while before
all 6 finally kick in? This could indicate a very slow leak between the
injection pump and the injectors.

bob


DD671's don't have an Injection Pump. They have a Fuel Pump that
supplies a common Fuel Rail, to which each Injector tapes off of.
Each individual Injector is then pumped via the Injection Lobes
of the Camshaft. Remember this is a 2 Cycle Diesel, not a 4 Cycle.

Bruce in alaska
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