Rotten O-rings!
Looks like the stealership that did the carb rebuild was phoning it in.
All the fuel rail and overflow joint o-rings were cracked and brittle.
Replaced with the OEM gaskets, and now not a whiff of gas.
Unfortunately, while muscling the carb and airbox together after sunset,
I buggered the threads where the airbox screws to the left side frame.
Should have worked in daylight to make sure the boots were correctly
seated and screwed in the airbox before tightening the boot clamps. So
now thread repair goes to the end of the work queue :\.
Cheers,
-ntd
On 06/08/2014 02:21 AM, Neil Dantam wrote:
Dear Nighthawkers,
After a long wait on an order from Partzilla (guess that's why they're
cheap), I was finally ready to open up the clutch -- until I saw a
puddle of gas on the pavement and a quick drip coming from between the
center carbs. So, clutch repair day became carb repair day. I'd
noticed a much smaller gas leak earlier and tightening/replacing some
hose clamps had seemed to fix it. Guess not...
So today, I pulled off the airbox and carb. Getting the airbox out felt
like a Chinese ring game. The joint between the airbox housing and the
carb boots looked pretty bad (pic attached), so I slathered some
Hondabond HT around the
seam. Currently waiting on that to cure. Probably would have been
better to use a black sealant (Hondbond's a nice gray color). It's
mostly under the side covers though, so not too bad.
Inside the carbs, nothing looked obviously wrong. Service records I got
with the bike show a carb rebuild last year. Float bowl gaskets looked
OK, though they seemed a bit large for the groove they fit in. Is that
normal? Float action had no resistance. Needles looked clean. On the
T-joint for the fuel line between the middle two carbs, the gaskets
looked a little flat. I can also rotate the T-joint about 10 degrees,
which seems odd. That seemed to be where the fuel was dripping from, so
maybe that's the culprit? I would think that those gaskets would have
been replaced in the previous carb rebuild, but who really knows...
Guess I'll put everything back together and see if it was just a
mis-seated gasket. If the leak persists, maybe I'll try a new gasket
set. And I still need to see about the clutch...
This is an increasingly inauspicious start with the 750. My old 250 was
nearly indestructible -- until an Accord set us in their sights.
Wondering when that fabled Honda reliability's gonna show up on the
new machine. Ah well, at least I've got an excuse to turn a wrench.
Cheers,
-ntd
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<https://lh4.googleusercontent.com/-m2MWB-xDSSs/U5P2jwEdbrI/AAAAAAAAABE/mVGQ9pPqxVg/s1600/IMG_20140607_185716.jpg>
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