Puts out black smoke when revving

Tiny
PAULYCOXY
  • MEMBER
  • 2008 HONDA CRV
  • 2.2L
  • 4 CYL
  • TURBO
  • 4WD
  • MANUAL
  • 80,000 MILES
When I rev my car it puts quite a bit of smoke out. Only just started doing it. No codes on diagnostic. Do you think it could be an injector?
It boosts good too.
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Sunday, January 26th, 2020 AT 4:54 AM

5 Replies

Tiny
SCGRANTURISMO
  • EXPERT
Hello,

Yes, it very well could be a fuel injector that is stuck open. Black smoke is usually a sign that too much fuel is being burnt by your engine. How are you managing your fuel or is the turbo stock?

Thanks,
Alex
2CarPros
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Sunday, January 26th, 2020 AT 5:34 AM
Tiny
PAULYCOXY
  • MEMBER
Engine is standard mate, turbo stock.
There was quite a bit of difference between the mg delivery on injector 3.
1.2.4 where around about 0.60.
Injector 3 was -1.9.
So something a bit wrong.
Removed them for testing tomorrow.
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Sunday, January 26th, 2020 AT 6:02 AM
Tiny
SCGRANTURISMO
  • EXPERT
Hello,

Okay, how are you testing the fuel injectors? Do you have them on a flow bench? Usually you test fuel injectors with a Digital Multi-meter [DMM] and test the resistance across the terminals. You want to do this when they warm and then again when they are cold. Usually a high impedance fuel injector should have between 10 - 15 Ohms of resistance. Fuel injectors will usually fail when they get warmed up because the coils inside of them will expand with the heat a short out. You can usually see a difference in the Ohms from when they warm and then when they cool down. Please get back to us with what you find out.

Thanks,
Alex
2CarPros
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Sunday, January 26th, 2020 AT 8:12 AM
Tiny
PAULYCOXY
  • MEMBER
I'm just going to put them into Delphi diesel mate. Let them check them out.
Will let you know what they find pal.
Thanks
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Sunday, January 26th, 2020 AT 8:20 AM
Tiny
KEN
  • ADMIN
I have seen a bad turbo cause this. can you remove the inlet or exhaust tube to check end play? Here are 2 guides to help us fix the problem:

https://www.2carpros.com/articles/how-turbo-chargers-work

and

https://www.2carpros.com/articles/engine-black-smoke

Please run down these guides and report back.Please let us know what you find. We are interested to see what it is.
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Wednesday, January 29th, 2020 AT 9:25 AM

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