So i have come to the conclusion that my new crawler is an hg, not an oc3. It seems to run good. It has a LOT of blow by. To the point where oil is spraying out the oil fill tube. I t wont even pull it self up my drive way. It bogs down. There is no back firing or anything to lead me towards bad timing. I noticed last night when I was running it that there were some sparks coming out of the stack. This is my first crawler and i would really like to get it going. Any ideas?
sounds silly but might it be overfilled with oil?
It is just above 4/4 mark
Sounds like it's just plain worn out and the cylinders need bored out. Or it could have a hole in a piston.
Regarding oil level - make sure you clean off the area around where the dipstick is inserted so it can go ALL THE WAY DOWN. My HG42 had so much crud built up behind the starter that a 4 quart oil change only showed to the tip of the stick, because it wasn't fully inserted into the dipstick tube.
I don't think the sparks mean anything other than combustible material in the exhaust pipe getting hot enough to light up on the way out. What do your plugs look like?
Oil spraying out the filler tube? Again, sounds like too much oil. Blow-by yes, oil spray no.
Why not do a cheap 4 quart oil change?
Low power might be caused by late timing. It certainly isn't advanced, or you'd have had kick-back on starting, and probably a bent starter armature.
But the blow-by does sound like very worn rings or cylinders.
If it were mine, I'd check the plugs first for oil as Mrprecision suggested, and the possibility of overfilling.
Then a compression test. I'd almost bet you'll find readings in the 50-70 psi range rather than over 100.
That would indicate an overhaul is needed.
Good luck with the old girl. It's a treat to see them kept running!
And let us know what you find.