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Where does the boost sensor vacuum line go?

Started by DarthLoser, November 16, 2012, 11:35:25 AM

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DarthLoser

November 16, 2012, 11:35:25 AM
I just bought an '89 FJ1200 and I live in California, so I have lots of extra stuff for emission requirements.  So I'm doing a tune-up and I find a vacuum hose that's broken near the carburetor.  I follow this hose up to the front of the bike near the headlight and it's connected to a boost sensor.  Where did the other end go?  I can't find a vacuum diagram that include a boost sensor, can I get some help???

Thanks!

Dads_FJ

#1
November 16, 2012, 12:35:13 PM
Not sure about the Cali model, but check out the intake boots.  Each of the four boots have a port, one vacuum line should go to your petcock, one to the boost and the other two should have caps on them.  And a bit of advice, take some time to introduce yourself in the intro section...
John S.

'84 Yamaha FJ1100
'89 Yamaha FJ1200
'94 Yamaha WR250
'80 BMW R100S/Sidecar
'39 BSA WM20

Pat Conlon

#2
November 16, 2012, 01:16:14 PM
The vacuum line attached to the intake manifold port on the #2 carb.
1) Free Owners Manual download: https://tinyurl.com/fmsz7hk9
2) Don't store your FJ with E10 fuel https://tinyurl.com/3cjrfct5
3) Replace your old stock rubber brake lines.
4) Important items for the '84-87 FJ's:
Safety wire: https://tinyurl.com/99zp8ufh
Fuel line: https://tinyurl.com/bdff9bf3

RichBaker

#3
November 18, 2012, 02:13:30 AM
'89 has a fuel pump, no vac to the petcock... So , only one vac line.
Rich Baker - NRA Life, AZCDL, Trail Riders of S. AZ. , AMA Life, BRC, HEAT Dirt Riders, SAMA....
Tennessee Squire
90 FJ1200, 03 WR450F ;8^P

movenon

#4
November 18, 2012, 10:10:57 AM
Quote from: Pat Conlon on November 16, 2012, 01:16:14 PM
The vacuum line attached to the intake manifold port on the #2 carb.     

:good2: :good2:
Life isn't about having the best, but about making the best of what you have...

1990 FJ 1200

DarthLoser

#5
December 06, 2012, 10:44:33 AM
Thanks for the help guys!  The bike's running a lot better now.  Thanks again.
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