Oil system

steplift20 · #1 08-03-2021, 05:18 PM

1988 150 Mercury black max 2 stroke,,,,,,today I had a very hard start trying to start the motor, start and conk out Smoked a very lot like the plugs were loaded with 2 stroke oil, after a couple of minutes I got her running the smoke cleared out after about 5 minutes, what would cause a 2 stroke oil injection system to get flooded with oil? Any help would be appriciated Thanks

phatdaddy · #2 08-03-2021, 06:31 PM

Everytime you spin the crankshaft, you are pumping oil into system and with engine not running , it does not burn the oil you are pumping.

Does that motor have a choke or the enricher valve

steplift20 · #3 08-03-2021, 06:36 PM

Yes it does, when you push in the ignition let it activates the Enricher valve, but I think I remember having a problem years ago and I had to change a one way check valve but I can't remember , and I did notice that my inline fuel filter is coloered blue , the same color as the oil.

THEFERMANATOR · #4 08-06-2021, 09:50 PM

Overfilling your oil tank can also cause this on a Merc. Mercury pressurizes the oil tank via a hose with a checkvalve in it on the bottom cylinder. If you overfill the tank with oil, start the engine, shut it off without using much oil, as the pressure in the tank bleeds off through the checkvalve, oil will pump back into the engine as the pressure supply hose is lower than the filler on the tank. Learned this one the hard way on my XRI when I put the oil injection back on it to sell it. Guy showed up to see it run and I ended up smoking out the yard.

steplift20 · #5 08-07-2021, 05:47 PM

Ferm,I can't believe you said that. The reason I said that is when the last time I started and ran my engine and shut her down I filled the oil resivoure to the top than that's when I had the problem with the oil flooding ,since then I started her up and no issues she runs perfect,the only thing that I did was fill the oil tank to the brim than a couple of days later that's when she wouldn't start,,,,,,,thank you for the reply to my issue,,,you are the best.

steplift20 · #6 08-08-2021, 08:17 AM

Quote:

Originally Posted by steplift20

Ferm,I can't believe you said that. The reason I said that is when the last time I started and ran my engine and shut her down I filled the oil resivoure to the top than that's when I had the problem with the oil flooding ,since then I started her up and no issues she runs perfect,the only thing that I did was fill the oil tank to the brim than a couple of days later that's when she wouldn't start,,,,,,,thank you for the reply to my issue,,,you are the best.

Ferm if you ever relocate to nj Let me know you will me my mechanic for sure