Deutz Diesel Issue

[Corley5]

The 4 cyl Deutz in my C4 forwarder started smoking a few days ago.  The smoke is blue/white to black and smells of raw fuel.  It's not using or gaining oil in the crankcase.  It is low on power and misses now and then but not constantly.  Engine oil pressure is a constant 75lbs.  Running the loader with the throttle set it runs fine, no smoke, no miss.  It idles fine and starts good as it always has.  The problem manifests itself when the machine is moving with the engine load changing.  It almost seems like it's loading up on fuel    I changed the fuel filters a few weeks ago before the problem started and always run clean fuel.  My transfer tank has a filter on it and I use Sea Foam on a regular basis.  Air filter is fine too.  I'm thinking it may be a bad injector    Hopefully not the injector pump.  Any ideas 

[Jeff]

I was going to say pump.

[Corley5]

I really hope it's not the pump   

[mad murdock]

Sounds like a fuel issue fer sure. Got a laser temp gun thingy? Check the exhaust manifold on all 4 and see of you got a cold  cyl. Start there. Hope you get it figgered.

[Gary_C]

Does sound like the pump. Could be the governor in the pump is malfunctioning. What kind of injection pump does it have?

[isawlogs]

  I would put a quart of transmission fluid in the fuel tank and run it through.  Sounds like the pump to me too.   

[Corley5]

  I do have one of those laser temp things    Dee got it for me for Christmas    I'll try that and see what comes up.  I'll have to look and see what brand the pump is.  I haven't paid any attention, haven't had to    but I would bet that it's a Bosch.
  It's 2.8 degrees right now.  I'm gonna wait for it to warm up a bit before venturing out.  I'm glad I haven't sold the old C-5 cable machine.  Looks like it's gonna see some service 

[kiko]

A blown fire ring will cause the blue smoke. A blown fire ring will often sound like an exhaust leak and create low compression on that cly resulting in the smoke.   

[LaserZX]

trans fluid is fine but you would be better to put in a quart of 2 cycle oil in the fuel instead both are fine

  I would put a quart of transmission fluid in the fuel tank and run it through.  Sounds like the pump to me too.   

[Corley5]

What will the addition of mix or tranny fluid do 

[Gary_C]

What will the addition of mix or tranny fluid do 

Provide some lubrication to the injection system parts, todays diesel fuel is considered very dry. The addition of biodiesel will also help, but not in this cold weather as it must be heated to disperse through the fuel.

From what little I know about Duetz engines, it looks like they have a direct injection pump with a mechanical governor included. I suspect the governor is sticking and that is a somewhat common problem in some injection pumps.

Check out this web site for parts. http://deutzpartsdirect.com/ 

[SPIKER]

[/quote]

What will the addition of mix or tranny fluid do 

What will the addition of mix or tranny fluid do 

Provide some lubrication to the injection system parts, todays diesel fuel is considered very dry. The addition of biodiesel will also help, but not in this cold weather as it must be heated to disperse through the fuel.

From what little I know about Duetz engines, it looks like they have a direct injection pump with a mechanical governor included. I suspect the governor is sticking and that is a somewhat common problem in some injection pumps.

Check out this web site for parts. http://deutzpartsdirect.com/ 

beat me to it...   yes will help lube up all of the injection system also free & remove deposits in the pup system.   seem to think about it about time for a little in my tractor
Mark

[Side loader]

  I would put a quart of transmission fluid in the fuel tank and run it through
My A-1 mechanic partner says dextron 2 or equilivant.  That or better.  A dutez is a tough motor.

[treefarmer87]

i have never heard of that does it help? makes sense though

[OntarioAl]

Corley5
Diesel engines built before the days of ultra low sulfur fuel used the fuel to keep the injection pump and injectors lubricated.
 The new fuel does not provide the lubrication necessary so you must regularly supplement your fuel with a lubricant, apparently the process that removes the sulfur “drys” out the fuel.
When I was running several “Detroits”  (6V92,453,353,253) the local Detroit Dealer’s shop foreman told me to dump a quart  of  auto transmission fluid in my tanks once a month told me it cleans and lubricates the injectors. This was when the fuel still had lubrication qualities. I now add about 1 quart of auto transmission fluid to 20 (Can Gallons) for my 353 Detroit, and 91 Jetta turbo diesel
Hope this helps
Al

[snowstorm]

The 4 cyl Deutz in my C4 forwarder started smoking a few days ago.  The smoke is blue/white to black and smells of raw fuel.  It's not using or gaining oil in the crankcase.  It is low on power and misses now and then but not constantly.  Engine oil pressure is a constant 75lbs.  Running the loader with the throttle set it runs fine, no smoke, no miss.  It idles fine and starts good as it always has.  The problem manifests itself when the machine is moving with the engine load changing.  It almost seems like it's loading up on fuel    I changed the fuel filters a few weeks ago before the problem started and always run clean fuel.  My transfer tank has a filter on it and I use Sea Foam on a regular basis.  Air filter is fine too.  I'm thinking it may be a bad injector    Hopefully not the injector pump.  Any ideas 

white or gray smoke is incomplete combustion often times low compression broken rings fire ring. also an injector over fueling can wash the cylinders down  no oil flim on the rings not as much compression. you could pull the injectors and have them tested for spray  and drip. with your finger on an injection line you can feel the fuel pulse. look at exhaust manifold is it wet around any one cylinder? start it check exhaust temp at each cyl.if one is cold there is a reason for it. if you think its a bad injector you can pull it reconect the line turn the motor over with the fuel stop pulled so it wont start watch the spray paten if it squirts or drips  it shouldnt

[lumberjack48]

Scored injectors from this water downed dry fuel, fuel is to clean now, you older guys remember what NB 2 diesel looked like and smelt like, it was nasty stuff.
20 yrs ago i added oil to the fuel in my Detroit, i like to see a Little smoke out of the pipe.

[Corley5]

  I moved the machine back to a job with a barn yesterday  and paid more attention to what it does.  Standing still I can throttle almost all the way up before it starts to miss and smoke.  Otherwise it seems to run fine.  When the machine is moving anytime it calls for more fuel it belches smoke.  I checked the temps on the exhaust manifold and number three is about 20 degrees colder than one and two which are close and #4 is hotter than one and two by about twenty degrees.  No signs of wetness at #3 to indicate raw fuel.
  I dumped a quart of ATF in the fuel this morning and ran it loading the firewood processor for about three hours and plan to run it more  tomorrow to see if it makes any difference.  If not I'll pull it in the barn and start with the injectors    I can't imagine raw fuel washing down the cylinder walls and rings is doing it any good   

[saltydog]

I would think injecters.deutz have a return line to put extra fuel back in the tank. when i rebuilt mine(in the woods)i missed hooking it back up actually didnt run bad just extra smoke.i sure would try injecters before a pump.cheaper and easy.i miss my deutz over 20,000 hrs before first rebuild. awsome engines.

[UN Hooker]

  I would start by checking the fuel line for a air leak between the tank and lift pump, especially the rubber one over the center pin. If that's OK, then check the pressure going into the injection pump under load. If its low, your lift pump may be going bad.
         UN