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Fuel line

Started by Picopower, April 08, 2013, 02:37:06 PM

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Picopower

April 08, 2013, 02:37:06 PM
Question, I'm replacing my fuel lines and am wondering if anyone knows how long the line from petcock
Is for my 85 fj1100' mine is short. It measures 14 inches. And that's not off the ground.
It's prob not short by much but it's very difficult to remove tank while keeping it attached.
Also my petcock dribbles fuel when on run position, and I don't think it should.
Thanks
Pico
1985 FJ1100
1975 GL1000
1976 GL1000
1976 BMW2002

flips

#1
April 08, 2013, 05:35:24 PM
Hi Pico.

The fuel line has to be short due to limited space between the tank and the carbs.If its too long or incorrectly routed its likely to kink and you will have fuel starvation issues.Mine is just long enough to raise the rear of the tank about 10 centimeters/ 4 inches and chock it up to get at the fuel line clamp for removal.I believe your petcock is vacuum operated and should only allow fuel to flow on the run position when the engine is running applying a vacuum to the diagpraghm.It might require rebuilding (new oring) or replacement.

Hope this helps  :drinks:

Jeff P
Stay rubber side down.

Pat Conlon

#2
April 08, 2013, 08:15:41 PM
Exactly right Jeff.:good2:
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

FJmonkey

#3
April 08, 2013, 09:40:30 PM
Quote from: Picopower on April 08, 2013, 02:37:06 PM
Question, I'm replacing my fuel lines and am wondering if anyone knows how long the line from petcock
Is for my 85 fj1100' mine is short. It measures 14 inches. And that's not off the ground.
It's prob not short by much but it's very difficult to remove tank while keeping it attached.
Also my petcock dribbles fuel when on run position, and I don't think it should.
Thanks
Pico

On the 84 to 87 the line routs around the top of carb #2, I pop the line out from the carb and now have room to lift the tank more and remove the line. Not sure if fuel pump route the same.
The glass is not half full, it was engineered with a 2X safety factor.

'86 Ambulance - Bent frame, cracked case, due for an overhaul
'89 Stormy Blue - Suits my Dark Side

RichBaker

#4
April 12, 2013, 02:04:50 AM
Fuel pump line is routed completely differently.... across top of airbox, down the side to the pump.
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

crzyjarmans

#5
April 13, 2013, 09:06:09 AM
Quote from: flips on April 08, 2013, 05:35:24 PM
Hi Pico.

The fuel line has to be short due to limited space between the tank and the carbs.If its too long or incorrectly routed its likely to kink and you will have fuel starvation issues.Mine is just long enough to raise the rear of the tank about 10 centimeters/ 4 inches and chock it up to get at the fuel line clamp for removal.I believe your petcock is vacuum operated and should only allow fuel to flow on the run position when the engine is running applying a vacuum to the diagpraghm.It might require rebuilding (new oring) or replacement.

Hope this helps  :drinks:

Jeff P
This is probably why mine will keep flowing fuel, I put a inline shut off, just before the carbs, Maybe a new petcock is in order?
Shawn Jarman
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