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Re: 91 XJ: rear valve cover grommet to CCV mismatch
"Doug" <pigdos@nospam.com> wrote in message news:IBZte.2081$Bx6.1034@newssvr13.news.prodigy.co m... > I don't have a clogged orifice in the rear valve-cover CCV plumbing because > it's not really connected at all. That's the problem the grommet in the > valve-cover doesn't match up with the CCV elbow fitting. The grommet in the > valve cover is merely a round hole whereas the CCV elbow fitting is designed > to be rotated and locked in place (kinda of like the oil filler cap) rather > than just plugged in. OK... all my XJs (93, 98, 00) had round holes... > The CCV plumbing is all new because I was having oil blowby into the air > filter. The problem is the rear valve cover CCV plumbing never fitted so > there's plenty of room for a vacumn leak and I'm pretty sure nothing is > being ported from the valve cover to the intake manifold because the > connection is so loose. I see... the round hole is an improvement! The tangs made it leak more... any slight leakage and your crankcase is not evacuated. > Because of all the above I'm thinking Jeep/Chrysler/Damniler must have > changed either the rear valve cover grommet design or the valve cover design > since '91'. Yes, I can certify that. > I think I'll look into Bill's idea and see if I can find and elbow that will > mate to the existing grommet and CCV plumbing. Exactly... __ Steve .. |
Re: 91 XJ: rear valve cover grommet to CCV mismatch
The parts guy at Jeep tracked down the right CCV assembly: 10 bones for 2$
worth of plastic. Apparently the Cherokees have featured at least two different valve covers. -- there is no .sig "Stephen Cowell" <scowell@sbcglobal.net> wrote in message news:DD5ue.582$5w3.22@newssvr11.news.prodigy.com.. . "Doug" <pigdos@nospam.com> wrote in message news:IBZte.2081$Bx6.1034@newssvr13.news.prodigy.co m... > I don't have a clogged orifice in the rear valve-cover CCV plumbing > because > it's not really connected at all. That's the problem the grommet in the > valve-cover doesn't match up with the CCV elbow fitting. The grommet in > the > valve cover is merely a round hole whereas the CCV elbow fitting is > designed > to be rotated and locked in place (kinda of like the oil filler cap) > rather > than just plugged in. OK... all my XJs (93, 98, 00) had round holes... > The CCV plumbing is all new because I was having oil blowby into the air > filter. The problem is the rear valve cover CCV plumbing never fitted so > there's plenty of room for a vacumn leak and I'm pretty sure nothing is > being ported from the valve cover to the intake manifold because the > connection is so loose. I see... the round hole is an improvement! The tangs made it leak more... any slight leakage and your crankcase is not evacuated. > Because of all the above I'm thinking Jeep/Chrysler/Damniler must have > changed either the rear valve cover grommet design or the valve cover > design > since '91'. Yes, I can certify that. > I think I'll look into Bill's idea and see if I can find and elbow that > will > mate to the existing grommet and CCV plumbing. Exactly... __ Steve .. |
Re: 91 XJ: rear valve cover grommet to CCV mismatch
The parts guy at Jeep tracked down the right CCV assembly: 10 bones for 2$
worth of plastic. Apparently the Cherokees have featured at least two different valve covers. -- there is no .sig "Stephen Cowell" <scowell@sbcglobal.net> wrote in message news:DD5ue.582$5w3.22@newssvr11.news.prodigy.com.. . "Doug" <pigdos@nospam.com> wrote in message news:IBZte.2081$Bx6.1034@newssvr13.news.prodigy.co m... > I don't have a clogged orifice in the rear valve-cover CCV plumbing > because > it's not really connected at all. That's the problem the grommet in the > valve-cover doesn't match up with the CCV elbow fitting. The grommet in > the > valve cover is merely a round hole whereas the CCV elbow fitting is > designed > to be rotated and locked in place (kinda of like the oil filler cap) > rather > than just plugged in. OK... all my XJs (93, 98, 00) had round holes... > The CCV plumbing is all new because I was having oil blowby into the air > filter. The problem is the rear valve cover CCV plumbing never fitted so > there's plenty of room for a vacumn leak and I'm pretty sure nothing is > being ported from the valve cover to the intake manifold because the > connection is so loose. I see... the round hole is an improvement! The tangs made it leak more... any slight leakage and your crankcase is not evacuated. > Because of all the above I'm thinking Jeep/Chrysler/Damniler must have > changed either the rear valve cover grommet design or the valve cover > design > since '91'. Yes, I can certify that. > I think I'll look into Bill's idea and see if I can find and elbow that > will > mate to the existing grommet and CCV plumbing. Exactly... __ Steve .. |
Re: 91 XJ: rear valve cover grommet to CCV mismatch
The parts guy at Jeep tracked down the right CCV assembly: 10 bones for 2$
worth of plastic. Apparently the Cherokees have featured at least two different valve covers. -- there is no .sig "Stephen Cowell" <scowell@sbcglobal.net> wrote in message news:DD5ue.582$5w3.22@newssvr11.news.prodigy.com.. . "Doug" <pigdos@nospam.com> wrote in message news:IBZte.2081$Bx6.1034@newssvr13.news.prodigy.co m... > I don't have a clogged orifice in the rear valve-cover CCV plumbing > because > it's not really connected at all. That's the problem the grommet in the > valve-cover doesn't match up with the CCV elbow fitting. The grommet in > the > valve cover is merely a round hole whereas the CCV elbow fitting is > designed > to be rotated and locked in place (kinda of like the oil filler cap) > rather > than just plugged in. OK... all my XJs (93, 98, 00) had round holes... > The CCV plumbing is all new because I was having oil blowby into the air > filter. The problem is the rear valve cover CCV plumbing never fitted so > there's plenty of room for a vacumn leak and I'm pretty sure nothing is > being ported from the valve cover to the intake manifold because the > connection is so loose. I see... the round hole is an improvement! The tangs made it leak more... any slight leakage and your crankcase is not evacuated. > Because of all the above I'm thinking Jeep/Chrysler/Damniler must have > changed either the rear valve cover grommet design or the valve cover > design > since '91'. Yes, I can certify that. > I think I'll look into Bill's idea and see if I can find and elbow that > will > mate to the existing grommet and CCV plumbing. Exactly... __ Steve .. |
Re: 91 XJ: rear valve cover grommet to CCV mismatch
The parts guy at Jeep tracked down the right CCV assembly: 10 bones for 2$
worth of plastic. Apparently the Cherokees have featured at least two different valve covers. -- there is no .sig "Stephen Cowell" <scowell@sbcglobal.net> wrote in message news:DD5ue.582$5w3.22@newssvr11.news.prodigy.com.. . "Doug" <pigdos@nospam.com> wrote in message news:IBZte.2081$Bx6.1034@newssvr13.news.prodigy.co m... > I don't have a clogged orifice in the rear valve-cover CCV plumbing > because > it's not really connected at all. That's the problem the grommet in the > valve-cover doesn't match up with the CCV elbow fitting. The grommet in > the > valve cover is merely a round hole whereas the CCV elbow fitting is > designed > to be rotated and locked in place (kinda of like the oil filler cap) > rather > than just plugged in. OK... all my XJs (93, 98, 00) had round holes... > The CCV plumbing is all new because I was having oil blowby into the air > filter. The problem is the rear valve cover CCV plumbing never fitted so > there's plenty of room for a vacumn leak and I'm pretty sure nothing is > being ported from the valve cover to the intake manifold because the > connection is so loose. I see... the round hole is an improvement! The tangs made it leak more... any slight leakage and your crankcase is not evacuated. > Because of all the above I'm thinking Jeep/Chrysler/Damniler must have > changed either the rear valve cover grommet design or the valve cover > design > since '91'. Yes, I can certify that. > I think I'll look into Bill's idea and see if I can find and elbow that > will > mate to the existing grommet and CCV plumbing. Exactly... __ Steve .. |
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