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View Full Version : Oil Consumption from dirty or clogged PVC Valve?


Evrgrnmtnman
06-19-2008, 11:47 AM
Has anyone ever heard of a dirty or clogged PVC valve causing oil consumption or loss of oil?

Red_Chili
06-19-2008, 12:02 PM
I suppose it could, if crankcase pressures were high as a result. It's gotta go SOMEwhere. Maybe out your seals.

Tanglefoot
06-19-2008, 12:58 PM
They say it's one of the things to check. I replaced mine but it didn't seem to change anything.

I'm still trying to figure mine out. Whenever I get off the trail and back on the paved road I get a steady stream of blue smoke out the tailpipe for a mile or two and then it's clear again. Could the bumps or angles be causing oil to go where it's not supposed to be?

On street driving it doesn't burn very much. I'm a little dismayed that it burns at all--it's only been 40k miles since the rebuild.

Eric

Squishy!
06-19-2008, 01:22 PM
I had a friend with 5,000 on a rebuild (22-R) and his rings shattered in number four cylinder. Huge cloud of blue smoke came out the tail pipe then cleared up. didn't burn any oil after that, but it still had broken rings.

Rzeppa
06-19-2008, 05:25 PM
Has anyone ever heard of a dirty or clogged PVC valve causing oil consumption or loss of oil?

My thinking is along the same lines as Bill's. What is the consumption/loss rate? I didn't notice excessive blue smoke from your tailpipe last Sunday. Have you checked for leaks underneath?

The previous F engine in my 71 smoked so much from worn and broken rings, Kevin Ehrlick made me tailgunner one year on a Slaughterhouse run. I protested "But she WANTS to be a diesel!". Yet that plus leaks from a number of spots only lost a quart between changes every 2500 miles.

Rzeppa
06-19-2008, 05:26 PM
Oh yeah, another thought: What do the spark plugs look like?

Evrgrnmtnman
06-19-2008, 06:02 PM
This is on my 88 Toy. 22RE with 4,400 miles on the rebuild. We have replaced the brand new head with another brand new head thinking it was the valve guides. I thought it may have been the rings not seating. No visible leaks of any kind, and no plumes of smoke at all......So where is the oil going? The thinking now is let's try the PVC valve. Next step will be to replace the block..
:confused:

Red_Chili
06-20-2008, 09:50 AM
How much oil consumption? 1 qt/3K miles? 4 qt/3K miles?

Evrgrnmtnman
06-20-2008, 10:42 AM
How much oil consumption? 1 qt/3K miles? 4 qt/3K miles?
5qts over the 4,400 miles

Red_Chili
06-20-2008, 12:03 PM
Geez. Guess you never have to change your oil. :lmao:

Evrgrnmtnman
06-20-2008, 01:15 PM
I decided the simple solution was just to put some "stop leak" in the oil and see what happens......."Not"!. Get another engine block next week....can't imagine anything except it being the rings.

Red_Chili
06-20-2008, 01:25 PM
Can't you just rebore the existing block? Or, perhaps, only change the rings if the cylinders are undamaged?

Evrgrnmtnman
06-20-2008, 02:11 PM
Gonna try a few more things since I have oil pressure fluxuations on the oil gauge, and varing oil stick levels when I check the oil. Replace PCV, oil sending unit, oil pump. By the way, just want to say it's been great working with Jesse over ATLR. Seems he willing to do whatever it takes to make the customer happy. GREAT Custom Service.........:thumb:

Rzeppa
06-20-2008, 05:49 PM
Hey CJ, 1 qt/thousand miles could be worn out engine leaking, or rings not sealing. Not Valdeze, not no compression at all, but somewhere in between. Do you have puddles were you park? If not, then what's your compression? Between those two, plus a plug reading, it should give a quick and easy indication of where the oil's going, well short of a, pardon the pun, short block.

I'm thinking puddles base on the lack of blue smoke I saw last Sunday. I worked on my daughter's car this morning, and talk about Valdeze!

Rezarf
06-21-2008, 09:33 AM
I'm still trying to figure mine out. Whenever I get off the trail and back on the paved road I get a steady stream of blue smoke out the tailpipe for a mile or two and then it's clear again. Could the bumps or angles be causing oil to go where it's not supposed to be?



Eric

I have found when I run at steep angles, I get blue smoke out the pipe until I am on level ground. Maybe the oil is sloshing around on the top end?

Guessing here.

Drew

beatdown83fj60
06-22-2008, 07:07 PM
Oh crap this is terrible news, I'm potentially picking up one of those rebuilt engines in Colorado Springs some time this week and this is definitely making me second guess the quality on those engines. I figured there was a reason they are only $1195 after you return your core. P.S. since it is a recently rebuilt engine is there any chance that maybe the rings just haven't completely seated yet? (forgive me if it's a dumb question but I'm not exactly an engine guru).

Rzeppa
06-23-2008, 06:47 PM
Oh crap this is terrible news, I'm potentially picking up one of those rebuilt engines in Colorado Springs some time this week and this is definitely making me second guess the quality on those engines. I figured there was a reason they are only $1195 after you return your core. P.S. since it is a recently rebuilt engine is there any chance that maybe the rings just haven't completely seated yet? (forgive me if it's a dumb question but I'm not exactly an engine guru).

Not a dumb question at all, and definitely something to consider. In personal experience with factory rings and a nice, coarse honed cylinder wall, they don't take more than a hundred or three miles to seat well, certainly not thousands of miles. I have heard of chrome rings taking longer and not even seating ever, but I have no first hand experience with that.

If you are thinking of buying a short or long block and putting it in yourself, you may also consider buying (or picking up for free) a builder for cheap and kitting it yourself. It's time consuming, but rewarding and great learning experience. I now have around 14k on the F I built for my 71 a couple years ago and continue to drive it every day and wheel her on weekends.

I now have two 2F and one F builder in my garage on stands and am trying to decide who's next :-)

My F cost about $150 in rings and bearings; the gasket/seal kit I already had lying around and I didn't bother to do any machining. Figure on another couple hundred for each of those. I bought a rebuild gasket/seal kit for my daughter's 22RE and it was around the same ~$100 or so as an F/2F kit. Machining might run between a hundred to two hundred, don't know how much a 22RE head costs to get done. I did my own on my F, basically cleaned everything up real good and lapped the valves with paste. Last 2F head I had a shop do was around $200 but that included new valves and springs.

beatdown83fj60
06-23-2008, 07:33 PM
Too late, I just got back with the engine a few minutes ago :D . They have a pretty decent warranty on it and use rock auto parts (same as engnbldr) and I need this truck immediately as it is my dd plus I have been borrowing a car for a bit and need to return it. The good news is (I guess) that I got ripped off on a used engine from somebody on TTORA so I have two cores, and I plan on keeping one and slowly building it myself to learn how to do it. I can do a good number of things to a vehicle but engine work was never something I've even had experience with. I just hope my engine doesn't have the oil consumption problem but I have spoken with several other people on CO4x4 that have gone through APR and haven't had any problems so I think this might be an isolated incident. I'm also currently on the hunt for a place that has the space for me to do that where I can still save some cash to buy a house. Money rules everything around me lol.

Evrgrnmtnman
06-24-2008, 06:59 AM
Not to worry! I think the problem was the original head which was brand new. I understand that 1 in about 1000 will have or get a broken valve guide. It looks like this other brand new head is holding up, also we put a new PCV, oil sensor, oil pump since my gauge was fluxuating oil levels. Seems like it's settled now. My advice, replace all the little additions to the engine like the PCV,oil sensor, etc.. since your putting in a new engine anyway. The cost isn't that much, and will help eliminate those little problems.. Your right, the warranty is pretty good.....

beatdown83fj60
06-24-2008, 06:47 PM
We'll find out, I think the truck will be running next friday, or maybe one week later at the most and will also be coming back to me with a 5 speed instead of an auto :bowdown: I can finally do atleast some mild wheeling again :blah: I'll shut up now, I'm just STOKED.


Evergrnmtnman, did you buy a longblock or a short block? The reason I ask is because I bought a longblock and it came with a new oil pump. I was kind of wondering if I should go get an OEM oil pump because it is somewhat of an important part, although I've never heard anything bad about ANY rock auto parts including head gaskets etc. Also I haven't even looked at my engine too closely because it's stored at work but did it come with metal backed guides for the timing chain? Seems like I should throw mine on if the engine didn't come with them.

Evrgrnmtnman
06-24-2008, 07:48 PM
I bought a long block through Jesse with the new head, and he did the install. I think he just put in a Asain(hope spelling is right) oil pump. The engine has always run really good, just some goofy things popped up, but seems to be working perfectly now. I think you will enjoy it.

Rzeppa
06-24-2008, 08:30 PM
Joe Calleja at CTS is big on the OEM valve chain tensioner and guide for 22REs versus aftermarket kits, but (speaking for him from our conversations) the aftermarket pumps themselves aren't much different.

Evrgrnmtnman
06-25-2008, 06:17 AM
We'll find out, I think the truck will be running next friday, or maybe one week later at the most and will also be coming back to me with a 5 speed instead of an auto :bowdown: I can finally do atleast some mild wheeling again :blah: I'll shut up now, I'm just STOKED.
Who is installing your engine?

beatdown83fj60
06-25-2008, 06:41 PM
My friend Bill at Evergreen automotive is installing my engine. I used to work for him and he has always helped me out when I was in a crunch with my vehicles. I trust him to do the work with my life. I was going to go through Jesse but I'm getting the labor done a little bit cheaper and he doesn't mind doing the 5 speed swap at the same time for the same cost.