sledgehammer
Well-Known Member
i was tramping bush with my d8h when suddenly the air filter burned. there were no fires around, nothing else burned. the filter just started burning. it didn't do any damage, but what the heck would cause this?
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air filter caught on fire
- Thread starter sledgehammer
- Start date
sledgehammer
Well-Known Member
no it doesn't.
sledgehammer
Well-Known Member
no muffler either, just a straight pipe off the turbo
sledgehammer
Well-Known Member
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it started running like crap so i shut it off. then smoke started coming out of the air cleaner. took the filter off and the paper was all burnt. once i got the filter out and fired it up it ran 100%
Davvinciman
Well-Known Member
Are you running a pony motor to start the engine? I am really feeling my age thinking about that.
sledgehammer
Well-Known Member
sledgehammer
Well-Known Member
the dozer ran for two hours before the filter burned. so of the pup engine sent lames through the intake it would somehow have to travel through the turbo and to the filter and burn two hors later.
sledgehammer
Well-Known Member
it's the 235 hp. it has a canopy and engine shields.
DPete
Senior Member
I meant it only has one air cleaner element correct, no safety element
sledgehammer
Well-Known Member
that's correct.
DPete
Senior Member
Has to be some kind of freak deal. Could you tell if the burned part started on the dirty or clean side of the element? I suppose the starting engine could spit a hot piece of carbon toward the intake and it smouldered until it lit but how remote is that? If the pony exhaust thru the intake manifold leaked same thing could happen I guess, though the main engine would have been getting dirt from the pony exhaust pipe. Don't know if you will ever find out.
sledgehammer
Well-Known Member
the entire element burned out so i have no clue which side started first.
I have had my old 2U's running and they will sent up a nice hot chunk of soot/carbon/whatever once in a while when I am running them hard and every now and then I am lucky enough to have one land in the back of my neck, and I can tell you that it feels just like weld splatter.... so if you get just the right chunk sucked into the filter I can see where it would light up the element.
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3rdGenDslWrench
Well-Known Member
Sledge, wonder if you might have a hole rotted through the housing of the air filter? Then like everybody else said trash laying on the exhaust manifold got hot, ignited and sucked up into the filter?
Our D7F did the exact same ordeal this spring. Started running like crap, Bill shut it off, smoke poured out. Pulled the air filter covers off fast, filters engulfed. Filters had very low hrs on them.
Ever run one at night? then you can see sparks sometimes come out of the exhaust. I would assume it to be red hot carbon bits?
We believe our machine simply sucked in a spark and lit the filters up. Burned the right down to the metal mesh, no paper left at all.
Ever run one at night? then you can see sparks sometimes come out of the exhaust. I would assume it to be red hot carbon bits?
We believe our machine simply sucked in a spark and lit the filters up. Burned the right down to the metal mesh, no paper left at all.
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