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  #61  
Old 12-04-2012, 08:41 AM
spectre6000 spectre6000 is offline
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Assuming I'm up and running this afternoon, what are the details on tomorrow's meeting?
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  #62  
Old 12-04-2012, 08:57 AM
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Quote:
Originally Posted by spectre6000 View Post
Assuming I'm up and running this afternoon, what are the details on tomorrow's meeting?
7:30-9pm Stevenson Toyota.

Most arrive between 7-7:15 to bat the chat in the parkng lot before the meeting.

Raffle will be a good one......
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  #63  
Old 12-04-2012, 12:04 PM
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Got the carb back together last night and got everything plumbed back in today. It fired up allright. I hear a hissing sound that I can't seem to place. It sounds like it might be the evap system box on the inner fender near the carb, but it's hard to track a quiet sound like that with the engine running right there. Can anyone tell me if a hissing sound is in any way expected (I've never dealt with emissions equipment), or do I need to track down a vacuum leak? It's also a bit on the stumbly side (further indication of a potential vacuum leak), but I didn't give it time to warm up or mess with the carb adjustments at all... Any thoughts?
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  #64  
Old 12-04-2012, 12:08 PM
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Sounds like a vacuum leak. Better get it fixed. 6mm hose is your friend. Check your brake booster hose as well. Is your EGR hooked up? Post up some pics of your carb/vacuum hose layout.
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  #65  
Old 12-04-2012, 12:16 PM
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you can take a can of brake cleaner/carb cleaner and spray it around to find the leak. when the engine sucks it up the idle will change.

Propane works too (from an unlit torch tip)
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  #66  
Old 12-04-2012, 12:30 PM
spectre6000 spectre6000 is offline
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I'm headed down to town to pick up a steering damper and some hardware here in just a few minutes. Looks like and carb cleaner and vacuum hose are on the list as well... I was really hoping that was one of those cruiser eccentricities like the straight cut gear whine... The crappy thing is, I can hear it continue to hiss after I shut it off, but there's no way to get out and around fast enough to track it down...

Vacuum line that goes out of frame top right goes to the vacuum diaphragm on the carb (which tested fine by hand while I was rebuilding the carb). The one going to the left of that goes to the carb base. The other two go to the air pump and the distributor advance.



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  #67  
Old 12-04-2012, 01:00 PM
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Yep - nothing obvious from the pictures. And disregard my previous EGR comment - I keep thinking yours is a '75 (dang you Jacket)
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  #68  
Old 12-04-2012, 01:56 PM
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I tracked down a vacuum "whistle" and the base of the carb on my FJ40 by putting a 1/2" stick of CPVC pipe (which can bend nicely) to my ear and listened for the leak at the other end. You can put this pipe in very small spaces and track down exactly where it is coming from.
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  #69  
Old 12-04-2012, 02:03 PM
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As others have indicated, the hissing sound is very likely a vacuum leak. Looking at the photos, you still have the Vacuum Switching Valve (VSV) installed. I don't have any insight on how it should be connected up. If you decide to bypass it; you will need a connection from the carb base to the choke pull off diaphram and then the connection from ported vaccum to the dizzy - everything else (if it exists) on the carb can be capped off.
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  #70  
Old 12-04-2012, 02:12 PM
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having the EVAP system hooked up is good too.
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