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Author Topic: Fuel Delivery (74 550)  (Read 637 times)

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Offline nrd2052

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Fuel Delivery (74 550)
« on: June 16, 2009, 07:33:06 PM »
Just got everything buttoned up on my project 550 and I went to start it. It runs just fine for a second on starting fluid, but then it stalls out. I have the petcock open (tried both positions) and the fuel lines don't seem to be getting any gas. when i took the tank off to paint it, I did take the lever off of the petcock to try and diagnose a leak it had when i bought it. I am fairly certain that i put it back together properly. with the fuel line off, i can get it to dribble a little bit of gas but not a whole lot.

Any thoughts?
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Offline fmctm1sw

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Re: Fuel Delivery (74 550)
« Reply #1 on: June 16, 2009, 07:35:31 PM »
Is your cap vented properly?  Do it with the cap off and see what happens...
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Quote from: 754
Dude is that a tire ? or an O-ring..??

Quote from: inkscars
This is not a pod thread
This is not a #$%* on my vacuum gauges thread
This is a help or GTFO thread.

1973 CB350F
1973 CB350G
1975 CB550K
1983 GL650I
1973 CB750K3 (http://forums.sohc4.net/index.php?topic=92888.0)
1984 Kawasaki KLT-250 (AKA 3 wheeler of death)
1994 Honda TRX300
1999 Honda TRX250

Offline nrd2052

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Re: Fuel Delivery (74 550)
« Reply #2 on: June 16, 2009, 07:37:32 PM »
good call, i didn't think about that
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Offline nrd2052

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Re: Fuel Delivery (74 550)
« Reply #3 on: June 16, 2009, 08:01:01 PM »
easy fix, that was it!

Now, how do i go about venting it properly?
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Offline Spanner 1

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Re: Fuel Delivery (74 550)
« Reply #4 on: June 16, 2009, 08:29:45 PM »
With respect, guys, I don't think your prob. is solved...the flow of gas from the tank needs to be 'big' and steady...if you turn the gas on with only a 'dribble' flow and wait a few mins., the carbs will fill and the bike will start. Have you ridden the bike on the road a few miles ? A gas-cap vent blocked would not show-up for several miles as the vacuum in the tank would take time to build.
Rust in tank sucked into the petcock seems more likely, IMO.
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If your sure it's a carb problem; it's ignition,
If your sure it's an ignition problem; it's carbs....
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