Luvtohunt Posted November 23, 2008 Share Posted November 23, 2008 Checked the air filter today in my 88 MJ and had water in it. It was on the edge nearest the fire wall, about an inch and a half of the filter. Its a 4.0 liter 6 cyl. Any advice? Any explanation? Thank you. Link to comment Share on other sites More sharing options...
project88mj Posted November 23, 2008 Share Posted November 23, 2008 :hijack: i have a simular problem with oil on my filter can some one address both problems :help: Link to comment Share on other sites More sharing options...
HKB3 Posted November 23, 2008 Share Posted November 23, 2008 Two different problems Read up on the oil problem here: http://jeep.off-road.com/jeep/article/articleDetail.jsp?id=257985 Very common with the 4.oh Water in air filter? first step would be to find out where the water is coming from then go from there Link to comment Share on other sites More sharing options...
Luvtohunt Posted November 24, 2008 Author Share Posted November 24, 2008 Two different problemsRead up on the oil problem here: http://jeep.off-road.com/jeep/article/articleDetail.jsp?id=257985 Very common with the 4.oh Water in air filter? first step would be to find out where the water is coming from then go from there Ya, I was trying to figure out where the water would come from, any idea? It appears to be coming from the two small hoses (vacuum lines?) in the back of the air box. Any help would be appreciated. Link to comment Share on other sites More sharing options...
project88mj Posted November 24, 2008 Share Posted November 24, 2008 could be condinsation? Link to comment Share on other sites More sharing options...
Luvtohunt Posted November 24, 2008 Author Share Posted November 24, 2008 could be condinsation? maybe, its not like pure water, its like foam? Any advice? Link to comment Share on other sites More sharing options...
DirtyComanche Posted November 24, 2008 Share Posted November 24, 2008 Sure it's water? Link to comment Share on other sites More sharing options...
project88mj Posted November 24, 2008 Share Posted November 24, 2008 color of the foam would help a little if it is yellow to brownish it could be oil? :dunno: Link to comment Share on other sites More sharing options...
HKB3 Posted November 24, 2008 Share Posted November 24, 2008 is the water pre-filter or after the filter? Maybe some rain/road water got into the air box? Link to comment Share on other sites More sharing options...
manche Posted November 30, 2008 Share Posted November 30, 2008 you could of had oil in your line and the water may of been sitting on the oil which it would turn to a yellow ish white brown color :smart: Link to comment Share on other sites More sharing options...
aemsee Posted November 30, 2008 Share Posted November 30, 2008 As your CCV looses it's ability to properly vent the crank case, the engine will begin to push combustion blow by in to the air box. As the water vapor and oil vapor combine it forms a whitish/ brownish foam. Look in the oil fill tube for almost any 4.7 and you will see the same stuff, as thats where the rocket scientists decided to put the PCV valve and the gasses condense on the colder plastic. Link to comment Share on other sites More sharing options...
manche Posted December 1, 2008 Share Posted December 1, 2008 i should probaly stick a pcv valve on mine i just have a pcv elbow :ack: i get blow by btw wats the big cylinder looking thing on the back of the valve cover were the vacuum hose hooks up :???: Link to comment Share on other sites More sharing options...
mfpdm Posted December 1, 2008 Share Posted December 1, 2008 i should probaly stick a pcv valve on mine i just have a pcv elbow :ack: i get blow by btw wats the big cylinder looking thing on the back of the valve cover were the vacuum hose hooks up :???: That's a crankcase breather/filter or as the parts manaul calls it, (filter, ventilation valve part# 53002466). Not many auto parts stores carry them but the dealership can get it for you. I just got one from them for $11 if I remember right. :cheers: Link to comment Share on other sites More sharing options...
manche Posted December 1, 2008 Share Posted December 1, 2008 thx maybe this will help with my fuel economy :cheers: Link to comment Share on other sites More sharing options...
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