Vehicle & Technical > Defender

injectors

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davidlandy:
What would be a symptom of a dodgy injector?
smoke - what colour? , noise?

DIL:
You will get white smoke (unburnt diesel)
Can make running a bit lumpy and some times give a knocking noise as the diesel isnt atomised properly when injected.

davidlandy:
cheers Mark

is it likely to be bellowing out white smoke or more of a haze ?

or does it depend on the size of the problem?

Porny:
Increased smoke... usually light grey, won't be black (at idle)

More pronounced diesel knock esp. at idle...

Low power...

Noise wise - if your getting more of a diesel knock at idle, then disconnect each injector one at a time, unitil the noise goes away...  thus finding a dodgy injector.

White smoke... may be a dodgy head gasket rather than a dodgy injector.


Ian

davidlandy:
ian

mine dont smoke at idle or on startup - even from cold after long periods of time.

it black smokes prior to turbo spool up - ie floor it in top doing 25-30 and there it is!

then grey smokes thru the rev range, or when left on idle for a while then give it a big rev.

not loosing coolant and is only using a drop of oil.

so I was thinking about injectors now.

fuel was adjusted up, but then i backed it off to where it was (I marked it)

... I even reconnected the egr

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