So I just want to pick up a can of carb cleaner, point it in there, and
fire away? This gunk build-up is a normal thing?
Marty Galyean wrote:
>
> After some thought I remembered that with MPI (mulit-point injection) the TB
> and upper intake runners never see the gas/air mix which normally keeps it
> clean. Any injector cleaner added to the fuel never reaches this area
> either. So what you are seeing is PVC vapor build-up with micro dust
> particles and the only way to remove it is to clean it out by hand with carb
> cleaner. I think its ok to spray carb cleaner in directly while engine is
> running with outer intake removed, but CHECK ON THIS, as I'm not sure the
> effect carb cleaner has on the O2 sensors.
>
> Marty
>
> Marty Galyean wrote:
>
> > Its likely just intake 'gum'. Gas mixed with dust (too small for filter to
> > catch), and some solidifed oil vapor (from the PCV tube on the intake)
> > etc. all baked into a gooey mess. You might just need to run some
> > injector cleaner through more often (every 5th tank or so). Clean it up
> > with carb cleaner while you have it open.
> >
> > Andy Levy wrote:
> >
> > > Well, I installed my QuickD TB just a few minutes ago. And I found
> > > something very, VERY scary. When I pulled the stock TB, the sweet
> > > stench of petroleum hit my like a ton of bricks. The gasket was loosley
> > > stuck to the TB (I expected it to adhere to the intake manifold), and
> > > had a thin film of an oily substance on it. As did its mating surface
> > > on the manifold. Looked at the inside of the TB, and the "engine side"
> > > of the vanes was COATED with what looks, feels and smells like oil.
> > > Hopped up on the bumper, and shone a flashlight into the belly of the
> > > beast.
> > >
> > > There is a film coating the ENTIRE inside of the intake manifold. I
> > > reached a finger inside to touch it. Either it's oil or a VERY
> > > convincing substitute.
> > >
> > > Well, we now know what's causing my ping, don't we? I probably don't
> > > even HAVE a belly-pan gasket!
> > >
> > > This after Sam Dell Dodge told me they checked for an intake manifold
> > > leak 2 weeks ago. I go back in on Thursday for them to re-examine the
> > > ping. An earful they sahll receive.
> > >
> > > Please excuse me whilst I take the truck out for a spin to teach the
> > > computer a few new things - and see what kind of balls the TB gave it.
> > > --
> > > -andy
> > >
> > > http://home.twcny.rr.com/andylevy/ --- andylevy@bigfoot.com
> > > -------------------------------------------------------------
> > > "We like AMD. The enemy of our enemy is our friend."
> > > --- Jonathan Schwartz Sun senior vice president
> > > -------------------------------------------------------------
-- -andyhttp://home.twcny.rr.com/andylevy/ --- andylevy@bigfoot.com ------------------------------------------------------------- "We like AMD. The enemy of our enemy is our friend." --- Jonathan Schwartz Sun senior vice president -------------------------------------------------------------
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