![]() ![]() The maintenance side of things gets a bit complicated. They’re also typically louder and some people like the louder, rougher sound. People like them because firing twice as fast gives them real get up and go, it means less weight, and more power on those smaller bikes if size restrictions apply. Basically it’s like if you ride a pushbike, a 2 stroke is you peddling with both feet, where as a 4 stroke is only peddling with one - your legs are the same size and deliver the same force on the same bike, but if you use both feet you apply that force twice as often. So in a 2t there’s ignition every time the piston finishes its up stroke, on a 4t it’s every other. The below thread contains lots of information on how the oil injection system works.They make more power per cc of cylinder because they fire twice as often. Some cheaper oils will smoke more than others, and all oils will smoke somewhat. I replaced both valves on my motor when I had a "too much smoke" problem on my motor. If this valve is stuck open, it will allow oil to drain/siphon from the reservoir tank into the fuel line while the motor is off. This is the check valve that is located in-line between the oil pump and the fuel pump. However, there is another check valve that, if defective, can cause too much oil to flow into the fuel line after the motor is turned off. If you have too much pressure in the system, it can only be caused by this check valve. It is the only check valve that regulates the pressure in the sytem. The Crankcase Pressure One Way Check Valve is one of three check valves on the oil injection system. You wrote kind of a long confusing narative and I don't know what the "tee check valve" is, but I'll try to answer what I understand. I still have that cheaper oil in the remote but dont see how that could be doing all this.Also it has had the same problem with 2 different motors and the tee valve was used on bth so I thought for sure that was it.Once u told me its job.But now im lost again. Its brand new so again any more help Ill keep trying every thing u guys say. I am not sure but it seems like that tee, it does not bleed from the bottom even by blowing air threw it 100 psi. Did u say there was a third check val somewhere? Also checked lines to remote tank made sure they didnt get rev somehow they were right. opened tank top, pressed that enricher button finally started. Started up 2 hrs later fired right up.Happy love u guys, but then today was going out, until I checked remote tank to much press plus there was oil all the way into fuel line.Draned some fuel. Alittle press in the remote tank but nothing like before. which is oil to res tank on motor ? Thought that had prob fixed. I changed the crank ckeck val which is the air press into remote tank right?. ![]() Perhaps someone else on the forum may be able to do this and report the results. I will not be using my boat for several weeks, so I can not do an actual time measurement on my own motor right now. I have read of other people having "too much smoke problems" and finding pressure remaining in their remote tank for hours or days, which is clearly too long. Based upon my own experience, if the pressure remains in the tank for longer than 15-30 minutes after motor shut down, then I would think that the valve is suspect. There are no Mercury published specs on this, as far as I know. The question, of course, is how long after the motor is turned off does it stop being normal for the pressure to remain in the tank. It is also normal to hear a hiss when removing the cap on the remote tank right after the motor is turned off. It is normal to have some pressure in the remote tank while the motor is running and for the pressure to remain in the tank a short while after the motor is turned off. The below link contains a very long discussion on the potential problems that can result from a failed valve in the oil injection system. I would suggest that you just go ahead and replace it to see if it solves the problem. This valve is easy to replace and not very expensive. The symptom of having too much pressure in the oil tank is the best indicator of it's failure. While I generally prefer to confirm that a component is bad before replacing it on a hunch, there are no practical bench tests that you can perform on this valve to test it for proper operation. If you have too much pressure in the system, then I would suspect this valve as the culprit. While there are two other valves on the oil injection system, the Crankcase Pressure One Way Check Valve is the only one that regulates pressure. It regulates the PSI level of pressure in the oil tank while the motor is running and releases this pressure soon after the motor is turned off. ![]() The Crankcase Pressure One Way Check Valve is responsible for generating the air pressure in the oil injection system. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |