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What would make Holley Carb overflow when hot?
#11
Jim, already took it apart twice to look for dirt or anything that could be clogging a passage, cleaned, blew it out with air compressor, no difference though.
Also hooked up the fuel pressure gauge and it sits at 6.5-7lbs and does not rise.
Im gonna hook up the vaccum/boost gauge after I drill/tap manifold and check that before I take carb apart again.
2008 Saab 9-7x Aero 6.0V8 AWD 5000lbs
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resonator delete,homemade cold air,otherwise stock
1994 Mustang Gt convertible.. stock

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#12
10-4. You've discovered a NEW problem, then. To ME, at least,lol.
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#13
Even w/o the cross over passages, wouldn't you still want the phenolic spacer/ insulator? :dunno:
My Perfect 5th Vehicle Would Be A Towtruck

'90 LSC/SE, Black on Black in Black, 347", T5, springs, ground effects.

'94 F150 4X 306, B303

'70 MK III, 76 K miles, pretty but has issues

'01 Durango, the wifes grocery getter.

Previously: '66 Cont'l Coupe, '75 Town Coupe, '79 MK V, '83 MK VI, '86 Cont'l, '94 Cont'l,

'89 MK VII BB

(and I have the unused parts to prove it Wink )
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#14
engine compartment in my boat doesnt get hot, intake is barely warm after a long run
2008 Saab 9-7x Aero 6.0V8 AWD 5000lbs
[email protected]
resonator delete,homemade cold air,otherwise stock
1994 Mustang Gt convertible.. stock

[Image: image.php?u=20525&type=sigpic&dateline=1385997332]
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#15
I bet you have those plastic/styrene floats.
As they age they absorb gas and release it when you slow down or shut it off, causing the gas to over flow. Brass floats sometimes get a leak making them heavier.
A blown power valve will make it rich when running, but not cause the gas to overflow when shut off.
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#16
Brass floats however we did take apart again and found minute particles in the seats that
wasnt there before, took off the fuel/water seperator filter and cut it apart and found sediment in the filter
so cleaned everything up and installed a new fuel/water seperator filter and all seems to be back to normal.
Have never run lower than 1/4 tank so Im thinking there is some junk floating around bottom of tank, next time I pull boat out we are going to empty tank completely, filter the fuel as it goes out and back in and all should be well with the world.
2008 Saab 9-7x Aero 6.0V8 AWD 5000lbs
[email protected]
resonator delete,homemade cold air,otherwise stock
1994 Mustang Gt convertible.. stock

[Image: image.php?u=20525&type=sigpic&dateline=1385997332]
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#17
Quote:There could be some flakes of rust or other shit stuck in the needle and seats, had that happen and caused what you describe.


Even after cleaning a couple times we missed some tiny ass shit in it,,
seems to be running fine now.. Chnaged the fuel/water sep filter which we found had sediment in it as well.
2008 Saab 9-7x Aero 6.0V8 AWD 5000lbs
[email protected]
resonator delete,homemade cold air,otherwise stock
1994 Mustang Gt convertible.. stock

[Image: image.php?u=20525&type=sigpic&dateline=1385997332]
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#18
MANY yrs ago, I had a Dodge p.u. that I bought from the back row (ready to be scrapped in other words).
Said back row was bordered by a low area (swamp).
Truck ran OK for ~ 3 mo's, then started gagging. Found some unknown junk in the fuel bowl :chin:
Kept happening, and when I finally pulled the tank, there was a 10" cat tail in there, and it looked like only about 1/4" was gone.
If I still had that truck it would probably STILL be acting up.
My Perfect 5th Vehicle Would Be A Towtruck

'90 LSC/SE, Black on Black in Black, 347", T5, springs, ground effects.

'94 F150 4X 306, B303

'70 MK III, 76 K miles, pretty but has issues

'01 Durango, the wifes grocery getter.

Previously: '66 Cont'l Coupe, '75 Town Coupe, '79 MK V, '83 MK VI, '86 Cont'l, '94 Cont'l,

'89 MK VII BB

(and I have the unused parts to prove it Wink )
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#19
:yes:
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