92' crankshafts in a stock engine festiva...

[muleskinner]

I did the Seafoam fog & worked/cleaned the piston rings to try to unstick them ..... for the 2nd time. This time I also used some PB blaster in the cylinders, also MMO. When I removed the spark plugs before I started the treatment, they were all looking good. No oil or carbon.
Here is a short video of the Seafoam fog.

[zoom zoom]

LOL yea you did that one right lol, I wish the wind wouldn't have been blowing it would have kept everything whited out!

Probably have to do that a couple times, it's burning carbon and oil buildup if it's smoking which means it's working!

[muleskinner]

LOL yea you did that one right lol, I wish the wind wouldn't have been blowing it would have kept everything whited out!

Probably have to do that a couple times, it's burning carbon and oil buildup if it's smoking which means it's working!

Yea, that was the second time. After the first time, it still consumed oil. That's why I did it the second time. If it still consumes oil after the second time, I think I will take apart the air intake & vac lines to see if anything is clogging it. The spark plugs look good when I remove them.

[Pu241]

sea foam through the intake will help with carbon buildup, but for stuck rings a piston soak like John suggested is probably the best bet. Or at least give it a piston soak then fog it. I'll leave the MMO vs sea foam debate to someone else!

Piston soak ..mmo day one remove plugs level pistons, Fill will mmo let set 24 hrs . Day two spin several times make huge mess , rock engine back and forth for half hour , level pistons refill all plug holes let sit 24 hrs . Day three rock every hour , half turn one way half turn the other . Level pistons REFILL . Day four . Rock pistons with sharp sudden pushes every half hour . Move everything within twenty feet and crank engine 30 seconds . Clean mess install plugs start seafoam the crap out of booster line START AND RUN TEN MIN AT 4G . Pay epa fine and change oil and run crap out of it for an hour . WORKS EVERY TIME .

Muleskinner, I think Seafoam is great for readily available carbon(piston crowns,valves, and combustion chamber) when introduced in the intake.
But, it isn't going to get down to the rings.
And to be clear, we are not talking straight up carbon, this is just highly degraded hydrocarbons.
Straight carbon burns off in air at 600°C, a water shift reaction might force its conversion to CO and CO2 at a lower temp.
But again I doubt the pistons see that kind of temp especially as aluminium melts at 660°C, I'm not sure what temp the alloy the B3 pistons are made of, so could/likely be higher.
Point is, using MMO in the manner Shade out lined is likely more effective, as MMO contains Bromo Benzene and will likely solvate much of carbon crud in the rings given time to work.
To be sure, I do not like to burn MMO in the combustion chamber, as it generates HBr acid which can erode metal and damage the O2 sensor.
Just my thoughts.

[muleskinner]

Muleskinner, I think Seafoam is great for readily available carbon(piston crowns,valves, and combustion chamber) when introduced in the intake.
But, it isn't going to get down to the rings.
And to be clear, we are not talking straight up carbon, this is just highly degraded hydrocarbons.
Straight carbon burns off in air at 600°C, a water shift reaction might force its conversion to CO and CO2 at a lower temp.
But again I doubt the pistons see that kind of temp especially as aluminium melts at 660°C, I'm not sure what temp the alloy the B3 pistons are made of, so could/likely be higher.
Point is, using MMO in the manner Shade out lined is likely more effective, as MMO contains Bromo Benzene and will likely solvate much of carbon crud in the rings given time to work.
To be sure, I do not like to burn MMO in the combustion chamber, as it generates HBr acid which can erode metal and damage the O2 sensor.
Just my thoughts.

Yes, I did soak it good with MMO the 1st try. The 2nd try I used more of the Seafoam than the MMO. I also used PB blaster & I mixed it all with a little oil.
I noticed in all the cylinders the piston rings were holding the fluid in.

[Pu241]

Shadetree,you ever use 100% biodiesel to breakup/dissolve Piston ring crud?
Its a ester, and is a really good solvent, just thinking about this.
Wonder how many engines could be saved through a simple soaking?

[scitzz]

The key is going to be soaking. Letting all those chemicals soak on the rings, one by one, with a little movement every so often, and a lot patience, will probably turn thetrick.

First thing I usually do when I by a junkyard motor is pull the plugs and spray pb blaster into the cylinders.

Running around outside the asylum again with my tappy talky appy

[muleskinner]

I did a 3rd treatment last week and it's back to eating 1 quart of oil every 100 miles.
The weird thing is, no smoking when driving the car, or when I put the seafoam in the cylinders, the seafoam stays in the cylinders so the rings are holding in the seafoam.
Could I be focusing in the wrong area??
The oil also gets black after 2 weeks of driving & now the car will not stay running while driving! Every time I push in the clutch the car wants to stall.
Could it be something with the air intake system? Like the BAC (bypass air control) or something clogged in the air intake? I have already checked the vane air meter and replaced it with one I know works.

[muleskinner]

Well, I did a 5th treatment and still the same.

My conclusion is, the piston rings are worn. I have spent too much money now just on Seafoam and MMO to keep doing this and hoping it will stop consuming oil. With the oil turning black in a 2week time, gas vapors must be getting past the rings and burns the oil. That is why there is hardly any smoke from the car.

I will probably take the engine out of Blue and put the one from Silver streak in it & I do a seal and gasket replacement & check the rings on that engine, but not till after April sometime (having a b6 put in SS).

As for the Engine out of Blue .... I will probably do a ring job on it eventually ... along with anything else it needs. Maybe put it in Shadow.

I will have a nice garage to do all this work then & I already have an engine stand & an engine hoist. Anyone can come and watch or help when the time comes.

[Advancedynamix]

Have you checked your PCV system? I think there is supposed to be a restrictor in the hose going to the intake pipe and if it's not in there, you'll consume oil. I'm not certain the b3 has this, but I know it's a possible problem with other b series Mazda engines. Also, if your crank vent system isn't working properly, you'll have ring sealing issues. Before pulling your engine again, take a look at everything, and show us what you find.

[Movin]

^^^ What he said, has the oil baffle plate in the top of the valve cover been removed and everything cleaned up? That is part of the vent and can push oil out there while driving, but it gets atomized going through the throttle so it takes a lot to smoke.

[frogman]

I did not see any diagnosis for the problem. Vacuum gauge checks, compression test or compression leak down test. It is hard to tell where one is at if you don't really know where you started from. Cleaning things out with Sea Foam and unsticking with Marvel Mystery Oil is a good thing for most older engines, no matter what.

[muleskinner]

^^^ What he said, has the oil baffle plate in the top of the valve cover been removed and everything cleaned up? That is part of the vent and can push oil out there while driving, but it gets atomized going through the throttle so it takes a lot to smoke.

No, but it does have a fairly new pcv valve. The valve cover was off at one point, but I wasn't there when it was switched. I assume it was checked and cleaned, if it was needed.
I'm not sure about the restrictor in the hose going to the intake pipe?! Not sure what/where he is talking about?