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CATEGORY LISTINGS > DEUTZ > F2L511 Black smoke problems [ REFRESH ]
Thread Title:

F2L511 Black smoke problems


Created On Monday November 06, 2006 11:20 Diesel Talk
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lecuyerb
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Posts: 3
Joined: Nov 2006

Note Monday November 06, 2006 11:20 View thread in raw text format
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Hi,

I'm fairly new to diesels but have worked on easy stuff for years.

I have an older Bobcat skidsteer with a 2 cyl air cooled Deutz.
Here is the story.

It had used down the diesel in the tank to the lowest point since I owned
the machine ~10 years. I filled it up and started it with my normal procedure
of about %50 throttle open, then start and ran it normally. At the time it had
a trencher attached to it. After running it at %50 for 5 minutes I disconnected
the trencher and went to move and it died from load. After that and ever since
it takes %100 percent throttle and lots of cranking to start. Then when it starts
it smokes like a train pure black and makes all kinds of different noises mostly
bad sounding. It is like it is under a serous load?

What have I tried: Well I figured I got muck in the fuel system so I replaced the
inline and can filter, bled the system and ran it again - same black smoke.

I thought maybe a hydraulic valve was stuck and the hydraulic system was causing a
load so I re attached the trencher and operated it and all the tilt/arms everything
worked.

So I am thinking it is an engine issue? Is it possible I clogged an injector or something?
How can I tell if both cylinders are working? My thought is one is not and that is the load?

I did also check the intake/filter for clogs and it looked real clean.

I really like this unit but the engine is tired and uses oil - I would just in frame it
but I think this problem would still be there?

Any help would be greatly appreciated?

Thanks,

Brian
Elk Grove, CA
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deutzcanada
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Posts: 7
Joined: Mar 2007

Note Saturday March 24, 2007 16:05 View thread in raw text format
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Hi Brian,

A couple of comments, and I am sure others may have some as well.
Diesel engines operate with a high fuel/air ratio. Black smoke from a diesel engine is "normally" a result of improper fuel to air ratio. However, you should have someone pop-test your injectors as well as test the crankcase pressure. Change the air filter, fuel filter, pre-filter and flush out your fuel tank, It only takes one bad batch to ruin your day.
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lecuyerb
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Posts: 3
Joined: Nov 2006

Note Saturday March 24, 2007 18:43 View thread in raw text format
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lecuyerb
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Posts: 3
Joined: Nov 2006

Note Saturday March 24, 2007 18:51 View thread in raw text format
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Hi,

Thanks for the advice.
I tore the engine down this weekend after checking injectors and various cylinder pressures injector pressure etc....

Nothing made sense except low cyl pressure so I tore the topend down hoping for a simple problem like a ring.
It turns out I had a cracked piston that in turn ruined the rod and ruined the crank journal(>1/8" wear).
So I am searching options for either a good used engine, a replacement, or rebuilding mine.

The dilemma is the machine that this engine is in is in very nice condition with all the
hydrostatics rebuilt no leaks and works great - the problem is Deutz stuff in this continent
is extremely expensive. So I am checking my options. Know any sources for F2L511 used
or rebuilt that are not off the charts price wise?
Alternatively I would be interested in sourcing a used usable crank and rod and going the rebuild route.

Thanks,

Brian L'Ecuyer
Elk Grove, California

Not sure why I got a blank post prior to this one....
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