PCV Hose

[Ront]

Hi  I'm getting ready to put my carbs back in on the sick FJ1200 I just bought and I noticed a hose running from the top of the crankcase to a bottle of oil he has wedged in behind the air box on the right side.  Does anyone know how this hose is supposed to be routed and what it should run to?  I noticed a couple empty threaded holes behind the airbox on the fight side. Am I missing something. Thanks

[movenon]

With a stock air box the hose go's up to the front side of the air box from the engine. There should be a fitting there to slip the hose onto. It is a pain to hook up that's probably why it was rerouted ?
Look at item 21 . http://www.2wheelpros.com/oem-parts/1989-yamaha-fj1200w-air-filter-non-california-model-assembly.html
George

[markmartin]

If you just can't get  the hose to go into the box, you might want to buy a new Item #21.  I couldn't get my air hose back into the grommet and kept trying until I broke the grommet.  It is still an awkward maneuver to get the hose into the grommet and box , but the hose will slide into a nice new supple grommet much easier than a 20+ year old hard and brittle grommet.  Also, I lubed the end of the hose with little spot of liquid soap.

[markmartin]

Has anyone circumvented this hose/grommet/air-box connection with a crankcase breather filter?

http://www.rpmracingca.com/proddetail.asp?prod=Engine%3ABreatherFilter&cat=39] [url]http://www.rpmracingca.com/proddetail.asp?prod=Engine%3ABreatherFilter&cat=39[/url]

[FJmonkey]

Yes, anyone that has come to their senses and tossed out the stock air box and filter to put pods on has. It makes working on the carbs so easy, and now there is room for other stuff under the seat.

[Ront]

 The fj1200 I just bought has a hose running from the crankcase breather to a bottle of oil.
I wonder if the engine has bad rings and lots of blow by. Hope not going to check compression

[Pat Conlon]

You can get a lot of crankcase blow by (worn piston rings) on high mileage FJ's. With this blow by comes oil mist and instead of running this oil mist thru your carbs (not a good idea) you can intstall a filter on the end of the vent hose. It helps if you install a long hose which allows the oil to cool, condense and drain back into the crankcase. If the blow by is excessive you can always install a catch can (or bottle) to contain the oil. They do require periodic draining.

Even with worn piston rings and low compression, these FJ engines just keep running and running.

[movenon]

Also a nice time to consider Duel UniPod's.... Makes life simpler and adds a lot of extra room.

http://www.rpmracingca.com/proddetail.asp?prod=Carb%3ARPMPod&cat=24

George

[Ront]

But the bike only has 27,000 miles. Anyway getting ready to check compression. Thanks

[Pat Conlon]

Warm engine, remember to hold the throttle wide open....report back your numbers. Cheers

[Ront]

Carbs are still off so  can't warm the engine.  Leaving soon to get compression gauge