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Diesel engine oil slobber.

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Huw from West W

01-25-2004 10:53:39

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What causes oil slobber out of the exhaust manifold on diesel engines especially on tractors used around the farmyard on front end loader work.

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RAB

01-26-2004 13:23:51

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Re: Diesel engine oil slobber. in reply to Huw from West Wales, 01-25-2004 10:53:39

They have probably said it all below. Poor injector spray pattern, hitting a too-cool spot and not burning probably due to insufficient compression caused by glazed bores at low revs, caused by not enough hard work, not enough heat and a poor spray pattern.... and round we go again until it all comes out of the exhaust spout, the bores get a better glazing, the rings work less efficiently and.... The dodgy spray pattern could be caused by carbon (unburned fuel on the injector tips) due to a leaky injector.... Take your pick of where the cycle starts.
Regards, RAB
PS Where in west Wales, north, mid or south? I'm in Lincolnshire, just.

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Bunk!!

01-26-2004 07:43:01

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Re: Diesel engine oil slobber. in reply to Huw from West Wales, 01-25-2004 10:53:39

Huw,

Sorry, this is all bunk.

Wind the damned thing up. It will slobber forever if you just putz around with it.

Open 'er up and that slobbering will quit and I don't care what the temp is.

I thought everyone knew this. ?????

Allan

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geok

01-25-2004 18:33:18

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Re: Diesel engine oil slobber. in reply to Huw from West Wales, 01-25-2004 10:53:39

One thing you might check is weither or not your tractor is equiped with a thermostarter. This is a glow plug device that is installed on your intake manifold, when activated a valve opens and lets fuel in across a heating element. Sometimes this valve leaks and raw fuel is circulated into the engine causing black oily exhaust.

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Bob

01-25-2004 16:24:58

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Re: Diesel engine oil slobber. in reply to Huw from West Wales, 01-25-2004 10:53:39

I am have a similar problem that I would like to get input on as well. I have a White 2-105 that is always stored in the barn. It has always been a good running tractor. I use it 3 months out of the year for haying. It was not started in 2 years due to health problems. I started it for the first time the other day. I drove it outside and let it idle for awhile and then drove it back into the barn. It slobbered out the manifold (either diesel or oil or both). Any ideas on what would cause this to happen? I would appreciate any and all input on this. Thanks, Bob

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Michael Soldan

01-25-2004 14:43:45

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Re: Diesel engine oil slobber. in reply to Huw from West Wales, 01-25-2004 10:53:39

Huw, I bought a B250 that hadn't run for several years, it wouldn't start easily and it slobbered around the exhaust it was oily and black, I added diesel conditioner which cleans injectors, removes moisture and fuel system gum, I put a piece of cardboard over the front....it now starts easily, runs better and I don't get the oily goop around the manifold and exhaust, I use the tractor to load manure and other jobs, I think that you have the same problem, most others concur...Mike in Exeter Ontario

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buickanddeere

01-25-2004 19:08:29

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Re: Re: Diesel engine oil slobber. in reply to Michael Soldan, 01-25-2004 14:43:45

So you are another of the "frozen chosen" from Canada on this site. Did Huron Tractor ever find that 7000 series tractor that some twit(s) stole? A diesel particularly in the winter and partly loaded needs coolant temps of 195F. Faulty injectors are more common that most people expect. Can't hurt to pull and spray test them.

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Bob

01-25-2004 11:18:44

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Re: Diesel engine oil slobber. in reply to Huw from West Wales, 01-25-2004 10:53:39

Make sure you have a properly operating thermostat installed, and then cover enough of your radiator with cardboard so the engine gets to proper operating temperature.

Watch your heat gauge, and be sure to remove the cardboard when the weather warms up!

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Aces

01-25-2004 11:08:23

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Re: Diesel engine oil slobber. in reply to Huw from West Wales, 01-25-2004 10:53:39

Yo is right just need to work it hard and maybe different oil.

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nhboyd

01-25-2004 11:04:40

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Re: Diesel engine oil slobber. in reply to Huw from West Wales, 01-25-2004 10:53:39

an injector is not working properly. what is leaking out the ex. is fuel not oil. idiling is when it is worst. have your injectors rebuilt or put in new one.

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01-25-2004 11:03:07

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Re: Diesel engine oil slobber. in reply to Huw from West Wales, 01-25-2004 10:53:39

Your engine is not getting warmed up doing those chores. Take your tractor out and really put it to work and make it run hot. That should clear up the problem.

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Eric Rylander

01-25-2004 11:50:55

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Re: Re: Diesel engine oil slobber. in reply to Yo, 01-25-2004 11:03:07

As others have stated, you are not working this engine to operating temparature. As far as the injectors, that's a maybe. Even if they are in good working order, it can still happen.

A good tune up is always a great idea, have you set the valve lash lately? Air filter clean?

I work on marine diesel engines and generator sets. A very common complaint is a smoking generator set slobbering out the exahust, goo-ing up the turbocharger compressor housing and the aftercooler air side (if aftercooled) because the boat builder sizes these units for the maximum electrical load and 90 percent of the time a 90kw generator is being operated with 25kw of load.

At 3000 hours you end up having to re sleeve the thing because the cylinder liners are glazed up due to "washing down" with unburned fuel.

You need to run that baby hotter and load it up!

Eric

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