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hi i have a hyundai robex lc3(NNN) NNN-NNNN2000 and when it is…

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hi i have a hyundai...
hi i have a hyundai robex lc3(NNN) NNN-NNNN2000 and when it is working it alot of blue blowes black outa the engine but does not burn any engine oil or use water any ideas
Submitted: 9 years ago.Category: Construction and Road Equipment
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Answered in 8 minutes by:
11/30/2012
Mechanic: Wayne, Journeyman replied 9 years ago
Wayne
Wayne, Journeyman
Category: Construction and Road Equipment
Satisfied Customers: 17,777
Experience: worked on many road graders, Bull dozers , skid steers, Rollers
Verified
Hi I'm Wayne,
I will help you with this,
Good Evening

this is a injector problem, you have worn/bad injectors,
that is exactly what would happen
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Customer reply replied 9 years ago


is ther any way of checking this how do u know its not the injector pump

 

Mechanic: Wayne, Journeyman replied 9 years ago

Hi
Reason I know that it is not the injector pump
is that will not cause a over fueling,
only injectors will
to check , remove all injectors , take to a pump shop , and they will check spray Pattern
this is the only way to check
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Customer reply replied 9 years ago

hi went to shop today and the checked and cleaned the ingectors and they wer perfect when i fired it up again same problem its fine when its ideling but when working black smoke everywhere

Mechanic: Wayne, Journeyman replied 9 years ago
Hi
When you removed the injectors,
to check spray pattern, what pressure did they pop of at
in the Tester
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Customer reply replied 9 years ago


have not got a clue but the guy at the shop said it definitely not my problem because if it was there would be a rough idle and blach smoke while reved and not working


 

Mechanic: Wayne, Journeyman replied 9 years ago
Hi
Thank you for that

How many miles you have on engine
so we know it's not injectors
and you say bluish, black smoke
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Customer reply replied 9 years ago


well its a excavator so its hours and thers about 4500 hours could it be the turbo


 

Mechanic: Wayne, Journeyman replied 9 years ago
Hi Thank you for that
Sorry for the delay
that would equate to 270K miles
so next things I would suggest
valve adjustment,
make sure air filtration system has no clogged , dented pipes , restrictions
Turbo , would lack of power, and blow oil from Exhaust stack
so No Not that
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Customer reply replied 9 years ago


thats no problem,ya no oil out of exhaust,would valve adjustment be a big job? and thanks for the help

Mechanic: Wayne, Journeyman replied 9 years ago
Hi
No valve adjustment is pretty easy , about 30-45 min
let me know what engine you have , model,make I will give you the Specs
don;t forget to check the intake system
this will cause a black smoke also
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Wayne
Wayne
Wayne, Journeyman
Category: Construction and Road Equipment
Satisfied Customers: 17,777
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Experience: worked on many road graders, Bull dozers , skid steers, Rollers

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