Re: Spray-type carb cleaner into inection system Q

["content22207" <brobertson@xxxx>]

You're spraying through the air intake. Fuel injection is sealed (only
way to get cleaner in there is through gas tank). 

Weak knee'd deposits (oil, soot, etc) can be removed this way. True
carbon buildup (if you've got any) is basically welded to the pistons.
One way to identify carbon buildup is if engine diesels after car
turned off (red hot deposits continue ignition). You can also identify
if compression HIGHER than factory specs. Most of your cloud was
simply burned carb cleaner, but it surely took some impurities with
it. In fact I call the procedure "making smoke" -- usually a bottle of
injector cleaner poured directly down the throat of a carb -- and my
vehicles ALWAYS run better afterwards.

Unless your air filter is pitiful, soot on the air sensor plate is
coming back from the valve cover. Make sure your engine is combusting
OK: fuel mixture not too rich, good hot spark, timed OK, etc. 

Someone w/ emissions will have to answer questions re: O2 sensor and
catalytic converter (I'm not using my O2 sensor if anyone wants --
14,000 miles).

Cleaners through the fuel system are reported possible to encrustate
the spark plugs, but I've never seen it.

Bill Robertson
#5939

>--- In dmcnews@xxxx, "stupadazzo2002" <mopar2me@xxxx> wrote:
> (This may be a re-post but I can't remember any replies)
> 
> Are there any consequenses of spraying carb cleaner inside the top of 
> the fuel injection system (without air cleaner)with the engine 
> running?
> 
> I noticed for the first time today I have black build-up (which has 
> only recently started) inside the intake and on the diaphragm 
> entering the system. I warmed the engine and sprayed a spray-style 
> carb cleaner into the top while running the engine around 2000 RPM. 
> It belches a horribly poisonous smelling cloud when you do this.
> 
> Will this spray-style carb cleaner harm the engine, exhaust, 
> catalytic converter, or especially the O2 sensor? I just had a new O2 
> sensor installed and I don't want to ruin it. Anyone? Is there a 
> different recommendation? Or can I do this safely?
> 
> Chris
> #3876