Restore of my 1986 Bronco XLT

[Gary Lewis]

Well done on the pump arm!

As for the snap ring, I don't remember if mine had one or not.  But I don't see a place for one on yours.  

[ReneH]

Hmm...it looks like a groove there over the synchrone ring...but as I've said there was none as I'd disassembled the t-case.


Another question: I've bought the universal joint yoke from moog...but it's much too small for the output yoke on my t-case...
Rockauto

Downwards is the new one from moog...

So, have I've ordered the wrong or is rockauto.com wrong?

[85lebaront2]

I would suspect Rock Auto. I ordered a manual lever position sensor for a 1990 E4OD, there is a TSB from Ford regarding the updated MLP design as the original was prone to water intrusion. Guess what they sent, the original 1990 switch, when I contacted them it was "that's what you ordered".

Parts stores here are no better for the most part.

[ReneH]

Today I want to do my yearly oil and filter change. Now I see that I haven't bought the zinc oil additive, that I have used before...

Do you think I can try it without? If the lifters makes some noise, can I add it later?

Maybe there are also some alternatives to the comp cams 159, I currently use...

Liqui Moly 

[ReneH]

So as changing my spark-plugs,  I've decided to take a look into the cylinders...

That's what I've found:



Passenger side 1 to 4


Drivers side 5 to 8


That's number 8


Inlet and outlet valve no. 7



And that's number 8...

Does this look like that there is a problem?

[mat in tn]

yearly?

[mat in tn]

number eight looks to have an oil problem. its getting oil from somewhere. its small enough to possibly be from pcv accumulation. how is the pcv setup? I ask this as there are some cases where the pcv has been connected to a runner in the intake and not into a common point of the plenum and then the vapors accumulate/condense there. mostly common in carbureted engines but I think you are still using efi. pull the pcv hose and check for wet oil. it may be a good time to add a catch can in line before the intake.

[ArdWrknTrk]

It started life as a EFI 5.0
Of course it has oil in #8, that's where the PCV goes.

[mat in tn]

my point exactly (with a little explanation of how and why)

[85lebaront2]

Exactly, Jim, the 302 EFI manifold does have the PCV  inlet at the back. I do not know what valve covers he is using. I don't know if the stock ones on the EFI 302s have a baffle under the PCV location.

[ReneH]

Hmm...ok...PCV...

I've connected it to the common point on the plenum. End this point ends in cylinder no. 8?




Maybe this could be a part of the problem?



What's about the color of the inlet valve on #8?

[85lebaront2]

The combustion chamber and valves on #8 show that there is oil being drawn into the intake. The intake design would allow oil in the plenum to be drawn into #8 runner. Due to the fact that the engine sits at a slight angle any liquid in the lower portion on the plenum will run to the rear of the chamber.

I have a similar issue with my Chrysler Lebaron, the internal baffle in the valve cover does not do a good job of separating the oil from the air plus there is only one inlet/outlet for crankcase ventilation.

[ArdWrknTrk]

It's a known (and solved!) problem with the early EFI engines.
Sometimes oil gets in and diesels.
Then the top ring land gets broken out of you get a hole melted in the piston.

I don't think either one of these could happen without immediately noticing.
It's a brand new engine, not some 200k mile beater out for a grudge match and "send it!"

The solution is to lead it to the common plenum and plug the intake runner.

I'm sure there are 'kits' or 'packages' for this work, at least they used to be everywhere.

[ReneH]

Ok. That sounds good.
My first though was, that it has to do with my former lifter/cam problems.

So, I don't understand hundred percent what the way to solve is...as far as I know, I need the pcv valve for not getting an over pressure inside the engine.

So what should or what do I have to plug?

What's about my oil filler cap with the filter on it? Is that ok or part of the problem?

[ArdWrknTrk]

The baffled filter on the other valve cover is fine.

There are about a million posts detailing the PCV, its problem and solution.

I'd assume Gary has a tutorial, or perhaps Matt has a link to someone who knows what they're doing?

[mat in tn]

one of the fixes was where the later versions had the pcv draw connection moved to the front of the plenum between the front two runners instead of at the rear.  the best correction that I can recommend is a catch can. this should get mounted to the firewall higher than the pcv to allow drainback into the valvecover and then a longer hose connecting to the intake. or you could source a later model upper which can bolt on perfectly. catch cans are used more in high revving, high stress situations like road course racing but you can use one too.

[ArdWrknTrk]

100%
This is more of a competition thing, but obviously you still have some blow-by from the rebuild.

A* leakdown test would tell you a percentage, but it probably just needs to be driven enthusiastically  and the rings will finish seating.

[ReneH]

Ok, so you mean something like that:

Ebay1

Ebay2

[mat in tn]

exactly! although I cannot read German

[ArdWrknTrk]

I wouldn't use the degas bottle with the breather.

The whole point of PCV is to draw a very slight vacuum on the crankcase, and pull oil vapor from the far side valve cover and crankcase Into the engine.