| Author | Message | ||
     M2statz |
I posted this in the "Old School" section also... Broke apart my primary because I thought that I had blown the main shaft seal, was pumping fluid out the primary vent, and there was about a gallon of gas in the primary. I have not ridden the bike since I winterized it last fall. Sea Foam in the gas, let it idle and then turn the gas off. Started the M2 this spring and after a nice warm up, it starts pumping the fluid out the primary vent. My questions are 1) Is it a bad needle seat or needle in the carb and 2) will washing all that gas through the cylinders strip the oil of the rings, valves and walls causing a bigger issue, 3) do I have have to worry about compression now? Thank god for the service manual, but I think I am at the limit of my mechanical ability. Thanks for any help... | ||
| Nukeblue |
the carb needle for sure. i had one do the same thing that sat for a couple years. it filled up the oil tank the blew out all over the bike. once it even hydro-locked the engine! . anyhoo, the rings are/were just fine. in my case | ||
| Sifo |
How does that happen with the gas shut off? And into the primary? Do these still have a vent between the crank case and the primary like the old iron head sportys? I would check the oil tank for gas too. | ||
| F_skinner |
Carb needle. I believe the ironheads stopped using the vent valve in 77 or 78. I am not sure since it has been a while since I have worked on one and I have drank since then. I doubt you will need to change the oil in the crankcase but check to make sure your main shaft seal is good. Frank | ||
| Sifo |
I thought they stopped using the vent too, but wasn't sure. I'm just not clear on the pathway for the gas to get into the primary. I would expect the engine oil to be totally polluted by the time it shows in the primary. I could be totally wrong on that though. I doubt you will have any lasting issues with rings, etc. once you have the cause sorted out though. | ||
| Nukeblue |
i think the gas goes through the crank seal into the primary much easier | ||
| Nukeblue |
we ended up having to clean out the gas tank too. and don't forget the line to the carb, we forgot that and it did it again! | ||
| Sifo |
Could be, I'm just not familiar with that happening like that. There's a lot of thing I'm not familiar with. That makes waking up each morning very a great thing to do! | ||
| F_skinner |
Yes, you may be right... If it were me I would drain everything. And please check the main drive shaft seal... It really sucks when your hauling butt and try to use the rear brake with oil all over the rear tire. | ||
| M2statz |
Nukeblue that was my next question...the seal appears to be OK. Will check the lines next and will flush them. Thank you! | ||
| Nukeblue |
cool, good luck! | ||
| M2statz |
Frank asked a good question over in the "Old School" section, How does one check the main seal to make sure it was not leaking? | ||
| F_skinner |
Yeah, I am sure there is a way to do it but I always know when it is bad buy the drippage coming from the bottom of the seal. I wonder it you can just make sure you have oil in the crankcase and wait for a couple of hours to see if it is leaking. I better have a beer and think about it. | ||
| M2statz |
Please let me know what you come up with...Oh...and I hope you let me know about the seal also!!  | ||
| Nukeblue |
change it or hope for the best. i bet there is some way with compressed air & soapy water but you would have to know where to tap in with the 2 or 3 psi air pressure. then spray around it & watch for bubbles. i say hope for the best. i'm sure the seal is solvent resistant right? | ||
| Swampy |
If your crankcase oil gets diluted with gas it might become thin enough to start leaking into the primary through the crank seal, but then what would come out is a thin oil, not oil then gas separate from one another. Maybe what came out was water with an oily gas smell? If the primary got filled with water from say an over vigorous washing, and then you rode it, the water would heat up, expand and then start pushing the oil out of the primary. Also was your engine oil down, and was it diluted with gas? |
