Update to my 32v saga. PCV or some real bad? Oil in cylinder, mod guys please read!

[dville_gt]

If it were coolant, You should see a pretty distinct green tint to the plug - also, the idle and driving would be real 'fluttery' sounding and a very obvious dead cylinder.

FWIW, I've had those plug wires go bad where they'd arc down inside of the cylinder head to the walls - which obviously, made it run like hell.

Thanks for coming in here, this damn car kept me up last night, just seems like a perplexing issue, coolant looks fine, oil level looks good (haven't drained it yet), intake looks nasty inside (as seen above), pcv system full of oil, yet only the front most (front most runner inside the intake at least) cylinder is soaked with some type of fluid, all the other cylinders look dry. Just trying to figure out a possible scenario.

assuming the leakdown looks okay, i am going to buy an intake manifold gasket set, pull the lower, clean the imrc plates, put it all back together with new plugs/wires/pcv and see what happens.

[dville_gt]

They actually don't even look like the same type of plug...

they are both autolite 764's

[turbostang]

Thanks for coming in here, this damn car kept me up last night, just seems like a perplexing issue, coolant looks fine, oil level looks good (haven't drained it yet), intake looks nasty inside (as seen above), pcv system full of oil, yet only the front most (front most runner inside the intake at least) cylinder is soaked with some type of fluid, all the other cylinders look dry. Just trying to figure out a possible scenario.

assuming the leakdown looks okay, i am going to buy an intake manifold gasket set, pull the lower, clean the imrc plates, put it all back together with new plugs/wires/pcv and see what happens.

No problem.

Engine dynamics and shit that goes on inside the plenum are strange phenomina no matter how you look at it, there's probably one of a million reasons why that oil is pooling near that cylinder. Rest assured, it has a HIGH probablility of coming from the PCV valve. (it has a direct path to oil splash in just about every engine) This happens a LOT more often than you think.

[dville_gt]

odd thing to note, looks like the autolite 764 was replaced by the 104 which is a full length thread vs. the half thread of the 764, seems like this would allow the plug to go further into the cylinder, correct?

764


OE Style
Platinum
Gap @ 0.054
1/2 Thread
Use Until Inventory Is Depleted

104

Platinum
Gap @ 0.054
Replaces AP764
Full Thread
Original Equipment Design Change

[greenbullitt]

odd thing to note, looks like the autolite 764 was replaced by the 104 which is a full length thread vs. the half thread of the 764, seems like this would allow the plug to go further into the cylinder, correct?

764


OE Style
Platinum
Gap @ 0.054
1/2 Thread
Use Until Inventory Is Depleted

104

Platinum
Gap @ 0.054
Replaces AP764
Full Thread
Original Equipment Design Change

no, it will not. that was a design change and the full thread plug will also work with the later heads and full threaded inserts

[dville_gt]

No problem.

Engine dynamics and shit that goes on inside the plenum are strange phenomina no matter how you look at it, there's probably one of a million reasons why that oil is pooling near that cylinder. Rest assured, it has a HIGH probablility of coming from the PCV valve. (it has a direct path to oil splash in just about every engine) This happens a LOT more often than you think.

that really does make me feel better about the situation, i get stuck in the mechanics of a problem and have trouble when things don't fit the mold perfectly. like i've said, i'd have not problem imagining the problem if it were affecting more then just the one cylinder, but since it's just the one i cant help but think it is something unique to that cylinder. with that said my process of elimination just isn't working real well, plug doesn't look oily nor clean, cylinder is not clean, from what i can see through the small injector bung the runner doesn't look real oily (although i cant get much of a view), the intake looks very oily but the other cylinders seem to have faired much better, etc. etc.

[dville_gt]

no, it will not. that was a design change and the full thread plug will also work with the later heads and full threaded inserts

ah, i see, so the threads on the earlier heads only came up half way, but the seat for the plug is in the same spot, so with the newer plug half the threads will not be used but the seat height is the same?

[Diabolic]

I had an oil separator or catch can on my 97 Cobra with a brand new Ford installed crate engine. I would empty the small plastic container about once a week. Oil in the intake is very common. You get no fuel over the IMRC plates to clean off the carbon so you really should clean them by hand or reassemble and seafoam the engine. Be sure to put a good amount of dialectic grease under the boots to keep out moisture. The rubber or foam gaskets are just not enough. Mine would always develop a miss after I washed the engine. It's best wash with a wet rag in a bucket of water and simple green. Keep it as dry as possible. I say you have nothing to worry about. Put it back together, replace boot's and plugs, seafoam after reassembly and stop worrying about it.

[dville_gt]

All cylinders showed leakdown between 15 psi - 20psi, the affected cylinder showed among the lowest at 15psi. Granted this was on a cold engine. So I guess I should pull the lower, clean imrc's, then replace pcv and fire it up?