I did a earch here but not 100% answers found.
Here's the story.....

I bought my 79' about 2 months ago. 110,000 miles Car runs beautifull except for a few oil leaks and a stalling problem as soon as the choke opens.
So I decide to fix the oil leaks. The first leak was the oil cooler. So I take it out and have it send to be tested and welded. I figures since the car will be of fthe road a few days that I would put some Marvel Mystery Oil in the engine to clean it up. Well the oil cooler could'nt be fixed so i had to get a used one. Long story short car sat for 2 weeks with MMO in it. I did rotate the engine daily though. So I put the oil cooler in, next leak is the OMP lines. For now I decide to just disable the OMP and premix.
I get the car started lots of smoke for a few min, then clears up. I go for a ride through the neighborhood, everything seems fine. Next morning drive 4 miles to work and I notic ethe car is stumbling. I figure the plugs are shot from the MMO. So i change the plugs, and the oil while I'm at it. Start the car runs fine go home.
Thismorning I notice some smoke from the exhaust. If I gradually bring the car up to speed it's fine, if I floor it I go into james bond mode!!!!!.

Here's what I did that may have caused this if it's not the oil seals.
I added 6 oz of premix to 6 gallons of gas I put in the car(allmost empty tank)
I *may* have put in an extra qt of oil becouse I was allowing for an empty oil cooler

Now today I added 10 more gallons of gas to the tank, drained the oil and filled up to correct levelbefore my ride home. Still had the smoke problem.
I just took it out on the highway (dark out) and beat the hell out of it. I did'nt notice any smoke from the headlights of the car behind me.

Could the MMO in the engine so long hurt anything?
Was it too much oil in the Pan?
was it too much premix in the gas?
Maybe the mmo did'nt burn off completly in the short drives I did?

Help Please, I don't want to hear that after 2 months of owning this car the engine is shot

 

drive it dude keep a check on your oil get some new omp lines when the oil seals are bad the engine most of the time smokes when you get out of the gas

 

Engine sounds okay. Probably just too much MMO.

 

with six oz. of 2 stroke to 6 gal (128 oz.*6) the ratio is easy to compute.... 128:1. Your smoke isn't from this, infact it might be on the low side if you completely disabled the OMP. Not sure 'cause I run both

 

left-over MMO in your thermal reactor perhaps.

 

Sounds like too much pre-mix with the MMO.

 

Your engine should be fine. My 80LS made it to 210k mi before the engine overheated due to coolant making it past an internal seal - never took it apart to find out where.

In any case, the engine should have a lot more mileage left in it. Likely, the MMO in there for a few days probably was cranking out into the thermal reactor piping and if you don't drive it for a few miles on the freeway, can stay in liquid form, coating the inside of your exhaust system to build up smoke every time it heats up enough.

A few high RPM runs on the freeway should blow out any residue in there. How much MMO did you use? I'm going to post a new note re: my ATF treatment, check out that thread for some info,...