On Feb 13, 5:25 pm, Steve <n...@spam.thanks> wrote:
> > So, the question is, why, instead of just running a foot of hose to
> > carry the coolant to the throttle body, do they use a foot of hose to
> > run it through a steel tube siamesed to the steel tube that carries
> > the input air for the PCV and then out another foot of hose? Are they
> > trying to heat the air for the PCV up before it gets into the engine?
> > Are they trying to cool the coolant before it gets to the throttle
> > body? The mechanical stability for the thing is entirely from the PCV
> > inlet connection at each end.
>
> > What gives??
>
> That's the state of PCV systems today. In order to lower emissions they
> run them so near the ragged edge of too little flow to keep the engine
> clean that they have to HEAT the PCV air to keep the gookum from
> condensing out and clogging it. This is why so many engines die of
> "sludge" in the oil these days- the PCV systems are no longer flowing
> enough air to keep the internals of the engine as clean as they once did.


Mm. Never thought of that; heating to prevent the gook and/or ice from
clogging. Thanks, guys.