heavy oil consumption- not plenum
#21
02-29-2012, 03:03 PM
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thanks for that drewactual i feel a little better that i might not have to tear it down. the home made oil catcher i put in is a glass bottle between the pcv and the intake to see how much oil the pcv is drawing in i watched it run a couple days ago cold and could watch a steady stream of oil coming from the hose into the bottle, a small stream but still seemed excessive.
#22
02-29-2012, 03:09 PM
Champion
thanks for that drewactual i feel a little better that i might not have to tear it down. the home made oil catcher i put in is a glass bottle between the pcv and the intake to see how much oil the pcv is drawing in i watched it run a couple days ago cold and could watch a steady stream of oil coming from the hose into the bottle, a small stream but still seemed excessive.
the rattle test of the PCV will lie to you with an inferior (for the task) PCV.. get that dealer one, dude..
#23
02-29-2012, 03:12 PM
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nah.. there will be some air pressure coming out of there- it's almost a certainty.. the blow-by shouldn't exceed the vacuum of the intake (and in turn, relaxing the check and allowing oil by)..
@ 150 dry, chances are you're okay.. if there is significant difference is when you'd be concerned.. 150 dry is holding good compression, and to the point I doubt you'd see more than 10#'s added wet.. which is good.. iirc 5# is the threshold, but it's usually when the dry is 100~130ish and the wet on the same cylinders is >+5 of that..
you either have a gross vacuum leak somewhere or a bad PCV.. I'd lean on the PCV.. they spit an amazing amount of oil left 'unchecked'.. the other option is a regulated vacuum leak which allows the reasonable blow-by pressure to exceed the intake vacuum..
after you replace the PCV with a dealer product, check your vacuum plugs at the manifold, and start following them back..
@ 150 dry, chances are you're okay.. if there is significant difference is when you'd be concerned.. 150 dry is holding good compression, and to the point I doubt you'd see more than 10#'s added wet.. which is good.. iirc 5# is the threshold, but it's usually when the dry is 100~130ish and the wet on the same cylinders is >+5 of that..
you either have a gross vacuum leak somewhere or a bad PCV.. I'd lean on the PCV.. they spit an amazing amount of oil left 'unchecked'.. the other option is a regulated vacuum leak which allows the reasonable blow-by pressure to exceed the intake vacuum..
after you replace the PCV with a dealer product, check your vacuum plugs at the manifold, and start following them back..
#25
02-29-2012, 03:34 PM
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#26
02-29-2012, 03:37 PM
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#27
02-29-2012, 03:40 PM
Have you taken a peek at those terminals in the underside of the distributor cap? I've seen this quite a few times. Whenever I see two firing-order adjacent cylinders ashing up, I almost always see a bent distributor shaft or worn bushings allowing the shaft to wobble. The tell-tale if you don't have a scope handy is scoring on the terminals opposite the ashy ones, three/five/six for your one/eight problem.
It's be cool if it were that easy, huh?
It's be cool if it were that easy, huh?
Wouldn't explain my oil consumption though.......
#28
02-29-2012, 03:50 PM
Grand Champion
True, but it's worth a look next time you've nothing better to do, if you haven't yet worked up the courage to do the compression test. 
Have you vacuum tested the monstrosity? Could be valve stem seals making cute little fudgesicles on those intake valves. Easy fix if you catch it before the crud gets too deep and the stems stretch.
Have you vacuum tested the monstrosity? Could be valve stem seals making cute little fudgesicles on those intake valves. Easy fix if you catch it before the crud gets too deep and the stems stretch.
#29
02-29-2012, 03:51 PM
True, but it's worth a look next time you've nothing better to do, if you haven't yet worked up the courage to do the compression test.
Have you vacuum tested the monstrosity? Could be valve stem seals making cute little fudgesicles on those intake valves. Easy fix if you catch it before the crud gets too deep and the stems stretch.
Have you vacuum tested the monstrosity? Could be valve stem seals making cute little fudgesicles on those intake valves. Easy fix if you catch it before the crud gets too deep and the stems stretch.
#30
03-22-2012, 09:21 PM
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Update been using the mopar pcv and no smoking when engines cold and drastically reduce oil consumption, in fact I haven't had to add any oil to it since I put the pcv in. Still getting the bucking and jerking when it reaches operating temp even though I replace the o2 sensor with a new ntk. I guess now I can concentrate on that one. Thanks for the help.
