[DML] Re: Failed emmissions AGAIN
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[DML] Re: Failed emmissions AGAIN



I have cleaned many sets of injectors. I have never found a "clogged"
one. What I DO see is injectors with lousey spray patterns (very
common) and a few that open at too low a pressure or dribble. In all
cases I have been able to make them work better, not always like new
ones, but certainly good enough so that the engine will run well. When
an injector has a bad spray pattern the fuel isn't atomized well and
the fuel does not get evenly distributed and therefore does not burn
effiecently. I believe the injectors "gum up" from disuse. On a car
that was never stored (or unused for an extended period of time) I
suspect the injectors would never get to the point they would have to
be cleaned. Gasoline sold today is formulated for fuel injected cars
and has cleaners built in to the additive package. For cars that are
used on a regular basis these cleaners will keep the fuel system
clean. They WILL NOT clean up a contaminated system. Even the fuel
system cleaners that you can buy like Techron, as good as they are,
will not clean up a contaminated system. It can't hurt to try a bottle
but don't expect miracles. If you suspect a contaminated fuel system
the first thing to do is to inspect the inside of the fuel tank. No
sense in cleaning up injectors if your fuel tank has dirt or water
inside! BTW the injectors have a fine screen inside to prevent small
particles from getting into the injector. If the screen gets dirty
enough to be plugged up you have bigger problems than a bad fuel
injector! Using glass jars to catch fuel can be dangerous, if one
should break and you have a spark you could ruin your day!
David Teitelbaum
vin 10757




--- In dmcnews@xxxxxxxxxxxxxxx, "therealdmcvegas" <dmcvegas@xxxx> wrote:
>
> You really can't clean the injectors yourself. The BOSCH shops that
> clean them simply run some solvent thru them for a short period of
> time. That's great if you've got a bit of gum that's clogging up the
> injectors, but can't clear out hard debris, or repair a weak spring.
> So it's probably more economical to just replace all of the injectors,
>








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