I deleted the pics, sorry, the journal in question on mine was visibly damaged at the point where the polished journal met with the rough cast lobe, and subsequently undersized. If this is a problem, and it caused the rings to break or fail in some way, fixing the rings alone is temporary, I'd at least remover the rod cap, and check that journal. Any problem there will be visible. Somewhere someone, perhaps many, suggested the rings, sounded pretty well backed up too. I'd pull that piston and re-ring that one, and once you see how easy that is, you'll probably do them all. Make sure that it was not caused by something else.
FWIW, the cyl walls on mine were absolutely beautiful when I took it down, I had a terrible slap by the time I did the real repair, and was anticipating wall damage. I was pretty shocked. Renewed my faith in that particular motor. I don't think any one thing is going to lead you to the source of your situation. But, checking out that piston/rings seems like it might give you a handle.
| > > If the purge valve is blown, it effectively shuts down the PCV system so | > > oil blows into the air filter. | > >
| > > The only test I know is to pinch off the line from the canister to the | > > PCV system at idle to see if the idle changes. If the idle changes, the | > > canister purge is dead. | > >
| > > A dead canister will also cause an unstable idle speed. It will vary up | > > and down and surge slightly. | > >
| > > No, a dead canister will not just get one cylinder 'wet'. I also don't | > > believe a dead canister or blow by of any type can pool oil in the | > > bottom of the intake manifold or in the individual fingers leading to | > > the cylinders. | > >
| > > When my air filter filled with oil, it dripped out on the ground. The | > > lip of the intake prevents oil from dripping down the throat of the carb | > > or TB unless the oil in the air filter is deeper than
1/4" or so and you | > > have the air filter that sits on top of the carb or TB. | > >
| > > I still think gas and bad injectors man..... | > >
| > > How was the gas mileage on that engine? | > >
| > > If it was mine, I think I would put the carb back on and see what | > > happens before spending a dime on it. | > >
| > > Mike | > >
| > > William Oliveri wrote: | > > >
| > > > Mike, | > > > Is there any way to test a charcoal can detatched from the jeep? | > > >
| > > > Would a bad charcoal Can cause the effect like we see in #2 cylinder? | > > >
| > > > When I checked the other items (air filter tube/housing, pcv tube, | > throttle | > > > body) I also looked at the air filter. It was dirty at the bottom but | > > > nothing that bad. Remember, this air filter is sprayed with oil so | the | > oil | > > > I sprayed it with accumulated at the bottom. Like an ounce or so. | You | > > > couldn't even get your hands wet with it. Not to the degree you | > discribe. | > > >
| > > > Bill | > > >
| > > > > You need someone that knows engines and isn't just out to take you | > > > > money. | > > > >
| > > > > Something really strange is going on..... | > > > >
| > > > > What you are now describing is blow by, big blow by. | > > > >
| > > > > You cannot have this with 150 psi compression unless the PCV valve | is | > > > > just plain broken or shut off from a bad charcoal canister. | > > > >
| > > > > What did your air filter look like? It 'must' have been just full | of | > > > > oil to have the intake with oil pools in it. | > > > >
| > > > > If it wasn't full of oil, then you do not have 'blow by'. | > > > >
| > > > > You also 'must' have had one big blue cloud following you with the | > > > > amount of oil you describe in the intake, no two ways about it. | > (unless | > > > > it is gas wash) | > > > >
| > > > > You are aware that a dead charcoal canister will produce enough blow | b | > y | > > > > to really imitate a blown engine right? It will soak an air filter | in | > a | > > > > week. | > > > >
| > > > > I am really almost thinking that someone sold you a dead FI system. | I | > > > > think it was broken and giving them the same fits and strange | symptoms | > > > > you are getting so they unloaded it on you. | > > > >
| > > > > Gas wash is very strange if you haven't seen it before. It takes | very | > > > > little gas to wash down the dirt and oil and make a messy slurry | that | > > > > almost looks like oil. This can pool in an intake manifold or into | a | > > > > piston. | > > > >
| > > > > You are describing injectors leaking down and pooling in the intake | or | > > > > 'gas wash'. | > > > >
| > > > > Good luck Bill! | > > > >
| > > > > I am out of ideas. | > > > >
| > > > > Mike | > > > >
| > > > > William Oliveri wrote: | > > > > >
| > > > > > I took the intake manifold to a perfomance shop today to have the | > > > injector | > > > > > in question tested and the mechanic told me it's highly unlikely | to | > be | > > > > > cylinder wash. He looked at the intake manifold and saw oil in | each | > > > > > manifold "finger" (which I didn't see before) and when he opened | the | > > > > > throttle there was a pool of oil in the there. When I looked in | the | > > > same | > > > > > place when the intake was on the engine I didn't see a drop. I | felt | > and | > > > ran | > > > > > a q-tip inside the pcv valve hose and didn't come back with any | oil | > > > stains. | > > > > > I put my hand inside the filter hose which connects to the | throttle | > body | > > > and | > > > > > I didn't feel any oil there either. Of course, this was closer to | > when | > > > I | > > > > > started this process and not in the later days. Could be it got | > worse | > > > in | > > > > > the end or was pooled in the intake and didn't show up in the | > throttle | > > > body. | > > > > > He told me Blow By was going on and I needed a new engine. | > > > > >
| > > > > > Is there anything else that could be going on as I'm getting ansy | > about | > > > > > pulling this piston. Could there be some effect which is | affecting | > only | > > > #2? | > > > > > Should I have him test #2 injector anyway and see what he finds? | > > > > >
| > > > > > Thanks, | > > > > >
| > > > > > Bill | > > > > >
| > > > > > > I saw a 'generic' rebuilt engine quote. | > > > > > >
| > > > > > > They only fix what is messed up on those kind of quotes.... | > > > > > >
| > > > > > > Still looks like a gas washed cylinder to me though... | > > > > > >
| > > > > > > Mike | > > > > > > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 | > > > > > > 88 Cherokee 235 BFG AT's | > > > > > >
| > > > > > > William Oliveri wrote: | > > > > > > >
| > > > > > > > Looks like my pistons are .40 over. There's a 40 on top of | the | > > > pistons. | >
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