Re: 200 ocean runner smokes
I'm going to add to what iwombat said.
I had a similar problem, but I will tell you how I corrected it.
I
did have a faulty VRO replacement from the dealer that was immediately replaced with a new one. They are like anything else. Every once in awhile they DO have a bad one slip through the cracks, and I just got the bad one on that time around.
You should absolutely follow all of the proper test procedures immediately after installing the new VRO to ensure it is in good working order. If you need a list of things to do I can post it. You need to count the pulses of the VRO at low AND high RPMs to make sure it is correct and in good working order. New or not. This is the first thing that should be done after installation. Don't just hook it up , and assume it works fine just because it is new.
Next, you might have an air leak somewhere that doesn't show itself until the necessary pressures of your engine present themselves. An example would be that it smokes excessively at high RPMs. In that case you need to check the pressures at High RPMs. Only then may it rear it's head, and you find out the source of the problem. You can test the engine at idle all day long, but in this instance you would never find the issue.
Finally, in a pinch you can remove the anti-siphon valve, but I wouldn't unless you just have to. I would replace it if it's not letting enough air through. Sometimes they get stuck, and don't allow enough air through which causes the engine to work harder to pull the necessary fuel through the hoses. The result is an engine that is starving for fuel which is dangerous, because this leads to overheating, and power head damage.