VRO2 Pulse limiter installation question

[dajohnson53]

Hi - I've posted before about this new to me low hours 1990 J200TXESM. The engine has always started very nicely and runs well at all RPMs. Although I've been running premix, I'm about to switch to clear fuel because the oil level in the tank goes down at the correct rate for fuel burning.

I've identified the pump as VRO2 by its fittings, etc. I've also - I think - identified the pulse limiter as probably the original old style black one and have purchased a new blue faced one.

The problem is: it looks like a bear to get at the thing to replace it. I'm thinking I have to remove many other parts as well.

Any words of wisdom about the easiest way to actually get at the pulse limiter to screw it out and screw the new one in? Thanks for any pointers you can give. I do have an OEM shop manual, but it doesn't have any step by step on this.

Related question: is this an "emergency" situation - is my engine in dire danger because of the old pulse limiter? If I continue to operate the engine (have put about 10 hours on it so far), do I need to be paranoid about the pulse limiter? If I'm worried, would it help at all to run premix in the tank, or is that irrelevant to the pulse limiter?

Thanks for any help you can give.

 

[ottertail]

Re: VRO2 Pulse limiter installation question

It is best to change it. Pre mix has no effect on the pulse limiter. Its purpose to to protect the air motor of the VRO from engine back fire. There are many out there that have not been changed out but take the time to get to yours and chage it

 

[dajohnson53]

Re: VRO2 Pulse limiter installation question

It is best to change it. Pre mix has no effect on the pulse limiter. Its purpose to to protect the air motor of the VRO from engine back fire. There are many out there that have not been changed out but take the time to get to yours and chage it

Thanks. If you could continue, please: So I understand it would mess up the fuel pump. IF the old pulse limiter does cause a problem, is it a catostrophic problem - leaving you dead in the water, or is it something like a failing fuel pump where pumping the primer bulb can get you on plane and home?

I'm going to take another good look at it tomorrow and maybe go for it. It looks like a dead easy job if I can get to it without breaking something else. That's my problem: easy projects go awry when other parts need to be messed with and end up broken or such.

I'd go ahead and have a shop take care of it, but all my local shops are "first come, first served" which means you drop the rig off and wait, no appointments taken. In the mean time, the engine really is running just fine and I'd hate to miss the short summer waiting for something to be done that really isn't critical.