See inline....

"Mike Romain" <romainm@sympatico.ca> wrote in message
news:408E6EDD.A0F4C209@sympatico.ca...
> Nope....
> ;-)

So I'm still Farked up!! :-)

> The 4.0 engine uses a CCV valve (closed crankcase ventilation). This is
> a small hole in the rear grommet of the 4.0 valve cover with a small
> plastic tube in it that goes to the intake manifold. This small hole is
> 'metered' so a certain amount of suction is always there. The hole can
> be cleaned out with a paper clip.

This I understand. My MPI Kit has this.

> Then the intake for the engine comes from the air filter and goes to the
> front grommet on the valve cover.

This I understand. My MPI Kit has this.

> The 4.0 engine does not tie in the charcoal canister to the CCV system,
> it uses a different canister all together that purges through a special
> fitting on the 4.0 air filter box.

This I got. MPI Kit has this.

What I'm not understanding is that in the article there is more parts going
from the front gromet than what I have. Perhaps this is a difference
between a stock 4.0L and the MPI kit.

I have only one line coming from the front gromet of the valve cover to the
air breather assembly and attaches to a fitting. On the other side of that
fitting is the tube that goes to the charcoal canister. The fitting is
basically a T fitting.

I'll try to get a pic of what I have to show you but it's basically how I
discribed.

Thanks,

Bill


> Basically you have to use one system or the other, you cannot 'easily'
> mix and match them and expect the engine to run right.
>
> I have heard of folks getting a PCV valve for the 4.0 cover and
> converting the cover over to the 4.2 system.
>
> I think this is easier and cheaper than going the other way. Just the
> right canister for the 4.0 cover is $100.00 or more, where a couple
> grommets and chunks of hoses for a PCV are cheap.
>
> I do know that folks have posted here about switching the CCV over to a
> PCV on a 4.0 valve cover, maybe ask that specific question.
>
> Mike
> > > http://www.off-road.com/jeep/cheroke...ltr/blowby.htm
> > >

 

You have a kit, and a broken kit (in my opinion) to boot.

This has absolutely no bearing on any stock vehicle, it is a compromise.

Mike

William Oliveri wrote:
>
> See inline....
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:408E6EDD.A0F4C209@sympatico.ca...
> > Nope....
> > ;-)
>
> So I'm still Farked up!! :-)
>
> > The 4.0 engine uses a CCV valve (closed crankcase ventilation). This is
> > a small hole in the rear grommet of the 4.0 valve cover with a small
> > plastic tube in it that goes to the intake manifold. This small hole is
> > 'metered' so a certain amount of suction is always there. The hole can
> > be cleaned out with a paper clip.
>
> This I understand. My MPI Kit has this.
>
> > Then the intake for the engine comes from the air filter and goes to the
> > front grommet on the valve cover.
>
> This I understand. My MPI Kit has this.
>
> > The 4.0 engine does not tie in the charcoal canister to the CCV system,
> > it uses a different canister all together that purges through a special
> > fitting on the 4.0 air filter box.
>
> This I got. MPI Kit has this.
>
> What I'm not understanding is that in the article there is more parts going
> from the front gromet than what I have. Perhaps this is a difference
> between a stock 4.0L and the MPI kit.
>
> I have only one line coming from the front gromet of the valve cover to the
> air breather assembly and attaches to a fitting. On the other side of that
> fitting is the tube that goes to the charcoal canister. The fitting is
> basically a T fitting.
>
> I'll try to get a pic of what I have to show you but it's basically how I
> discribed.
>
> Thanks,
>
> Bill
>
> > Basically you have to use one system or the other, you cannot 'easily'
> > mix and match them and expect the engine to run right.
> >
> > I have heard of folks getting a PCV valve for the 4.0 cover and
> > converting the cover over to the 4.2 system.
> >
> > I think this is easier and cheaper than going the other way. Just the
> > right canister for the 4.0 cover is $100.00 or more, where a couple
> > grommets and chunks of hoses for a PCV are cheap.
> >
> > I do know that folks have posted here about switching the CCV over to a
> > PCV on a 4.0 valve cover, maybe ask that specific question.
> >
> > Mike
> > > > http://www.off-road.com/jeep/cheroke...ltr/blowby.htm
> > > >

 

You have a kit, and a broken kit (in my opinion) to boot.

This has absolutely no bearing on any stock vehicle, it is a compromise.

Mike

William Oliveri wrote:
>
> See inline....
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:408E6EDD.A0F4C209@sympatico.ca...
> > Nope....
> > ;-)
>
> So I'm still Farked up!! :-)
>
> > The 4.0 engine uses a CCV valve (closed crankcase ventilation). This is
> > a small hole in the rear grommet of the 4.0 valve cover with a small
> > plastic tube in it that goes to the intake manifold. This small hole is
> > 'metered' so a certain amount of suction is always there. The hole can
> > be cleaned out with a paper clip.
>
> This I understand. My MPI Kit has this.
>
> > Then the intake for the engine comes from the air filter and goes to the
> > front grommet on the valve cover.
>
> This I understand. My MPI Kit has this.
>
> > The 4.0 engine does not tie in the charcoal canister to the CCV system,
> > it uses a different canister all together that purges through a special
> > fitting on the 4.0 air filter box.
>
> This I got. MPI Kit has this.
>
> What I'm not understanding is that in the article there is more parts going
> from the front gromet than what I have. Perhaps this is a difference
> between a stock 4.0L and the MPI kit.
>
> I have only one line coming from the front gromet of the valve cover to the
> air breather assembly and attaches to a fitting. On the other side of that
> fitting is the tube that goes to the charcoal canister. The fitting is
> basically a T fitting.
>
> I'll try to get a pic of what I have to show you but it's basically how I
> discribed.
>
> Thanks,
>
> Bill
>
> > Basically you have to use one system or the other, you cannot 'easily'
> > mix and match them and expect the engine to run right.
> >
> > I have heard of folks getting a PCV valve for the 4.0 cover and
> > converting the cover over to the 4.2 system.
> >
> > I think this is easier and cheaper than going the other way. Just the
> > right canister for the 4.0 cover is $100.00 or more, where a couple
> > grommets and chunks of hoses for a PCV are cheap.
> >
> > I do know that folks have posted here about switching the CCV over to a
> > PCV on a 4.0 valve cover, maybe ask that specific question.
> >
> > Mike
> > > > http://www.off-road.com/jeep/cheroke...ltr/blowby.htm
> > > >

 

You have a kit, and a broken kit (in my opinion) to boot.

This has absolutely no bearing on any stock vehicle, it is a compromise.

Mike

William Oliveri wrote:
>
> See inline....
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:408E6EDD.A0F4C209@sympatico.ca...
> > Nope....
> > ;-)
>
> So I'm still Farked up!! :-)
>
> > The 4.0 engine uses a CCV valve (closed crankcase ventilation). This is
> > a small hole in the rear grommet of the 4.0 valve cover with a small
> > plastic tube in it that goes to the intake manifold. This small hole is
> > 'metered' so a certain amount of suction is always there. The hole can
> > be cleaned out with a paper clip.
>
> This I understand. My MPI Kit has this.
>
> > Then the intake for the engine comes from the air filter and goes to the
> > front grommet on the valve cover.
>
> This I understand. My MPI Kit has this.
>
> > The 4.0 engine does not tie in the charcoal canister to the CCV system,
> > it uses a different canister all together that purges through a special
> > fitting on the 4.0 air filter box.
>
> This I got. MPI Kit has this.
>
> What I'm not understanding is that in the article there is more parts going
> from the front gromet than what I have. Perhaps this is a difference
> between a stock 4.0L and the MPI kit.
>
> I have only one line coming from the front gromet of the valve cover to the
> air breather assembly and attaches to a fitting. On the other side of that
> fitting is the tube that goes to the charcoal canister. The fitting is
> basically a T fitting.
>
> I'll try to get a pic of what I have to show you but it's basically how I
> discribed.
>
> Thanks,
>
> Bill
>
> > Basically you have to use one system or the other, you cannot 'easily'
> > mix and match them and expect the engine to run right.
> >
> > I have heard of folks getting a PCV valve for the 4.0 cover and
> > converting the cover over to the 4.2 system.
> >
> > I think this is easier and cheaper than going the other way. Just the
> > right canister for the 4.0 cover is $100.00 or more, where a couple
> > grommets and chunks of hoses for a PCV are cheap.
> >
> > I do know that folks have posted here about switching the CCV over to a
> > PCV on a 4.0 valve cover, maybe ask that specific question.
> >
> > Mike
> > > > http://www.off-road.com/jeep/cheroke...ltr/blowby.htm
> > > >

 

You have a kit, and a broken kit (in my opinion) to boot.

This has absolutely no bearing on any stock vehicle, it is a compromise.

Mike

William Oliveri wrote:
>
> See inline....
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:408E6EDD.A0F4C209@sympatico.ca...
> > Nope....
> > ;-)
>
> So I'm still Farked up!! :-)
>
> > The 4.0 engine uses a CCV valve (closed crankcase ventilation). This is
> > a small hole in the rear grommet of the 4.0 valve cover with a small
> > plastic tube in it that goes to the intake manifold. This small hole is
> > 'metered' so a certain amount of suction is always there. The hole can
> > be cleaned out with a paper clip.
>
> This I understand. My MPI Kit has this.
>
> > Then the intake for the engine comes from the air filter and goes to the
> > front grommet on the valve cover.
>
> This I understand. My MPI Kit has this.
>
> > The 4.0 engine does not tie in the charcoal canister to the CCV system,
> > it uses a different canister all together that purges through a special
> > fitting on the 4.0 air filter box.
>
> This I got. MPI Kit has this.
>
> What I'm not understanding is that in the article there is more parts going
> from the front gromet than what I have. Perhaps this is a difference
> between a stock 4.0L and the MPI kit.
>
> I have only one line coming from the front gromet of the valve cover to the
> air breather assembly and attaches to a fitting. On the other side of that
> fitting is the tube that goes to the charcoal canister. The fitting is
> basically a T fitting.
>
> I'll try to get a pic of what I have to show you but it's basically how I
> discribed.
>
> Thanks,
>
> Bill
>
> > Basically you have to use one system or the other, you cannot 'easily'
> > mix and match them and expect the engine to run right.
> >
> > I have heard of folks getting a PCV valve for the 4.0 cover and
> > converting the cover over to the 4.2 system.
> >
> > I think this is easier and cheaper than going the other way. Just the
> > right canister for the 4.0 cover is $100.00 or more, where a couple
> > grommets and chunks of hoses for a PCV are cheap.
> >
> > I do know that folks have posted here about switching the CCV over to a
> > PCV on a 4.0 valve cover, maybe ask that specific question.
> >
> > Mike
> > > > http://www.off-road.com/jeep/cheroke...ltr/blowby.htm
> > > >

 

"William Oliveri" <wuji@bigvalley.net> wrote in message news:<c6kj8o$ckolo$1@ID-193866.news.uni-berlin.de>...
> Hi all,
>
> I just looked at the 4.0L valve cover which will be going on my 4.2/4.0
> combo and I noticed the PCV valve was clogged with gook (on the inside of
> the valve cover are three screws which allow the PCV casing to come away
> from the valve exposing the PCV Valve itself).


I just had my 60,000 mile checkup in my '99 TJ Sport and they replaced
both these parts as part of it. I looked into doing it myself first
and at least the PCV part was cheap.

Matt

 

"William Oliveri" <wuji@bigvalley.net> wrote in message news:<c6kj8o$ckolo$1@ID-193866.news.uni-berlin.de>...
> Hi all,
>
> I just looked at the 4.0L valve cover which will be going on my 4.2/4.0
> combo and I noticed the PCV valve was clogged with gook (on the inside of
> the valve cover are three screws which allow the PCV casing to come away
> from the valve exposing the PCV Valve itself).


I just had my 60,000 mile checkup in my '99 TJ Sport and they replaced
both these parts as part of it. I looked into doing it myself first
and at least the PCV part was cheap.

Matt

 

"William Oliveri" <wuji@bigvalley.net> wrote in message news:<c6kj8o$ckolo$1@ID-193866.news.uni-berlin.de>...
> Hi all,
>
> I just looked at the 4.0L valve cover which will be going on my 4.2/4.0
> combo and I noticed the PCV valve was clogged with gook (on the inside of
> the valve cover are three screws which allow the PCV casing to come away
> from the valve exposing the PCV Valve itself).


I just had my 60,000 mile checkup in my '99 TJ Sport and they replaced
both these parts as part of it. I looked into doing it myself first
and at least the PCV part was cheap.

Matt

 

"William Oliveri" <wuji@bigvalley.net> wrote in message news:<c6kj8o$ckolo$1@ID-193866.news.uni-berlin.de>...
> Hi all,
>
> I just looked at the 4.0L valve cover which will be going on my 4.2/4.0
> combo and I noticed the PCV valve was clogged with gook (on the inside of
> the valve cover are three screws which allow the PCV casing to come away
> from the valve exposing the PCV Valve itself).


I just had my 60,000 mile checkup in my '99 TJ Sport and they replaced
both these parts as part of it. I looked into doing it myself first
and at least the PCV part was cheap.

Matt

 

Matt wrote:
>
> "William Oliveri" <wuji@bigvalley.net> wrote in message news:<c6kj8o$ckolo$1@ID-193866.news.uni-berlin.de>...
> > Hi all,
> >
> > I just looked at the 4.0L valve cover which will be going on my 4.2/4.0
> > combo and I noticed the PCV valve was clogged with gook (on the inside of
> > the valve cover are three screws which allow the PCV casing to come away
> > from the valve exposing the PCV Valve itself).
>
> I just had my 60,000 mile checkup in my '99 TJ Sport and they replaced
> both these parts as part of it. I looked into doing it myself first
> and at least the PCV part was cheap.
>
> Matt

It is not a PCV valve guys....

It is a CCV grommet with a hole in it. They are two different systems.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's