3 cylinder VR..

[JoeKanuck]

I've had the 86VR for a few weeks and after some tinkering, I got it running pretty good...some popping at idle but that's about it. I decided to check the back right diaphragm, just to see its condition.

 

As it turns out, it was in pretty good shape...a couple of pinholes but that's it. I reinstalled and decided to see how the slides work looking down the air filter hole. To my surprise, three were pulsing freely but #3 was not moving at all.

 

I took the diaphragm out and it came out in sections. The metal piece which holds the diaphragm and plastic washers together had separated from the sleeve. I reassembled the unit at what a difference. All of a sudden, I had a 4 banger.

 

I saw a cheapo carb sync tool somewhere consisting of clear fuel line in two loops and ball bearings. I made one of these and after a 5 minute carb synch, (#3 was way out), it goes like a scalded cat.

[slick97spirit]

Awesome, some on here would probably like to see pictures of that carb sync tool.

[JoeKanuck]

I stole the idea but I can't remember where. I searched for the images but no luck. I'll try to upload pics of mine and try to explain them.

 

The first shows the whole unit in all its glory. There are two bits of hose; a complete circle in the middle with a bead in it and a long piece the goes to two carbs. At the bottom of both loops are plastic beads. The closed loop inner bead is the 'zero' point for the guage. It will find the bottom of the loop which will indicate the balance point of the carbs.

 

I used a bit of rubber hose on the ends to seal properly to the carbs. So it goes like this;

 

Black rubber -> plastic tubing -> kink in tubing, (this serves both as vacuum restriction and prevents the bead from going too far) -> half a loop containing silver bead

 

Hopefully this makes sense. This is merely the X-1 version I assembled for about 5 bucks and 10 minutes. On the X-2 model, ideally I would have harder clear plastic tubing for the bottom of both circles so there will be less friction on the bead.

 

That might add a couple of bucks to the device but sacrifices must sometimes be made for the greater good.

 

I'll be glad to answer any questions...or accept any answers.