Quote:
Put a Holley 390 (#2464) on my slant.
...and that was your first big mistake! 
I bet it's the needle/seat and it's flooding. when gas overflows it usually runs down the "barrels" and seeps out the throttle shafts.
D/W
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| Leaking Holley 390 https://slantsix.org/forum/viewtopic.php?t=16388 |
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| Author: | imnoisydart [ Wed Mar 01, 2006 4:32 pm ] |
| Post subject: | Leaking Holley 390 |
Put a Holley 390 (#2464) on my slant. Runs good, but when it is hot it drips fuel . One time I noticed it dripping under the throttle shaft. The next time I thought it might be leaking under the secondary metering block (not plate). Aside from obviously checking the tightness of the fuel bowls (which I think I must have done originally), what should I be looking for when I tear it down? |
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| Author: | Dennis Weaver [ Wed Mar 01, 2006 5:04 pm ] |
| Post subject: | Re: Leaking Holley 390 |
Quote: Put a Holley 390 (#2464) on my slant.
...and that was your first big mistake! I bet it's the needle/seat and it's flooding. when gas overflows it usually runs down the "barrels" and seeps out the throttle shafts. D/W |
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| Author: | CStryker [ Wed Mar 01, 2006 5:29 pm ] |
| Post subject: | |
Also sounds like it could be a leaking power valve... you install the anti-blowout kit? If not, I highly reccomend it the next time you have it apart. |
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| Author: | DusterIdiot [ Thu Mar 02, 2006 3:52 pm ] |
| Post subject: | Hot spot too... |
One other reason for boiling out the mains is a hot spot, if the thing runs fine during cold weather, or during the warm up cycle and doesn't boil over after a short hop...it can be the above...if you get it during a heat soak (long ride/ lots of in town traffic) then shut it off and it pukes because the gas is boiling out the bowl and has no place to go but the path of least resistance...then you need to work on a phenolic spacer or pull the manifold heat flap and see what happens... (This is where a TQ might shine because it's a plastic bodied carb...) -D.Idiot Seen that before... |
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| Author: | slantzilla [ Thu Mar 02, 2006 9:09 pm ] |
| Post subject: | |
Rick, where have you got the floats adjusted at? You should just be able to see the fuel at the bottom of the sight hole, it should not be running out at all. |
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| Author: | dusty7t4 [ Fri Mar 03, 2006 5:08 am ] |
| Post subject: | |
I had a o-ring go once, on the balancing tube running from side to side. quick replacement fixed everything -dave |
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