Calgary Jeep Association

4x4 Related Groups => Tech Talk => Topic started by: unsung_hero on March 19, 2007, 01:45:25 PM

Title: pressure building in oil pan and blowing out gaskets
Post by: unsung_hero on March 19, 2007, 01:45:25 PM

i'v got a 89 yj 2.5L and like the title say i've got pressure building in oil pan and blowing out gaskets it even shooting to dip stick out  :cry:  lol if any has some ideas on how this could be fixed, if any that would appreciated

Title: Re: pressure building in oil pan and blowing out gaskets
Post by: frenchy on March 19, 2007, 02:22:53 PM

Quote from: "unsung_hero"

i'v got a 89 yj 2.5L and like the title say i've got pressure building in oil pan and blowing out gaskets it even shooting to dip stick out  :cry:  lol if any has some ideas on how this could be fixed, if any that would appreciated

New oil pump maybe ?

Title: pressure building in oil pan and blowing out gaskets
Post by: wrenchead99 on March 19, 2007, 07:47:36 PM

check pcv valve, pcv hoses,  if all is well, do a compression test and/or leakdown test to determine if the engine is any good.

Title: pressure building in oil pan and blowing out gaskets
Post by: BUKI on March 19, 2007, 09:26:57 PM

Quote

check pcv valve, pcv hoses, if all is well, do a compression test and/or leakdown test to determine if the engine is any good.

Ya what he said

Title: pressure building in oil pan and blowing out gaskets
Post by: superles on March 19, 2007, 09:29:29 PM

That type of pressure build up is defenitely blow by from poor compression ring seal. Your compression must be low on one or more cylinders. Also check to see if you have oil in the coolant or coolant in the oil as it may also give an indication of a cracked block or head/head gasket problem.

Title: pressure building in oil pan and blowing out gaskets
Post by: cLAY on March 19, 2007, 10:28:40 PM

Check the easy stuff first, being the PCV system. I had a kinked hose in my PCV sytem that was causing a similar problem. I replaced my valve cover, rear main and pan gasket before I realized that the oil was coming from the dipstick tube due to the crankcase overpressurizing. Turns out that one of my PCV lines had gone soft over the years and kincked closed on one of the bends. Looked ok untill I completly removed it and looked inside. A new hose and all was good.


I don't see how an oil pump wiould help.............

Title: pressure building in oil pan and blowing out gaskets
Post by: frenchy on March 19, 2007, 11:00:30 PM

Quote from: "cLAY"

I don't see how an oil pump wiould help.............

Nope, don't think it would...  LOL I was just thinking about the pressure release valve on some of them... for some reason...but that shouldn't blow the dipstick out.

Title: pressure building in oil pan and blowing out gaskets
Post by: unsung_hero on March 21, 2007, 10:09:05 AM

thanks every one all great info  as soon as i get the chance i'll get under the hood again