One more quick Quadrajet question..sorry
Thread Starter
Melting Slicks
Joined: Mar 2006
Posts: 3,342
Likes: 7
From: Connecticut
Originally Posted by olescarb
the stock air valve spring setting is 3/4 turn past the valves lightly seated on your #7043202
the leak would most likely be a air bleed (syphon break) that is plugged causing the fuel to syphon into the bore after the engine is shut off OR it could be a bad bowl casting that has a fuel passage that leaks into that throttle bore.
try to take a look to see where the gas is leaking from with the top off the carb. the fuel level should not drop in the bowl other than fuel evaporation, i have seen 2 q-jet fuel bowls that had bad castings in the 30 plus years i have been doing carbs for a living so it is not very common.
henry @ oles carb
the leak would most likely be a air bleed (syphon break) that is plugged causing the fuel to syphon into the bore after the engine is shut off OR it could be a bad bowl casting that has a fuel passage that leaks into that throttle bore.
try to take a look to see where the gas is leaking from with the top off the carb. the fuel level should not drop in the bowl other than fuel evaporation, i have seen 2 q-jet fuel bowls that had bad castings in the 30 plus years i have been doing carbs for a living so it is not very common.
henry @ oles carb
It looks like the spring is either broken or it simply fell of the adjuster...too bad its still leaking fuel into the primary on the passenger side and I have no idea why.
Its a great running carb except for the fact that it floods after sitting for 1or 2 minutes after I shut the engine off ....Then I have to hold it to the floor to get it started..... this is damn frustrating
Last edited by Bob Onit; Jul 18, 2006 at 12:00 AM.
Safety Car
Joined: Dec 2004
Posts: 4,071
Likes: 0
From: San Diego CA
Originally Posted by Bob Onit
I put the air horn from my original 73 QJ on this carb thats giving me all the trouble and the secondary problem is solved
It looks like the spring is either broken or it simply fell of the adjuster...too bad its still leaking fuel into the primary on the passenger side and I have no idea why.
Its a great running carb except for the fact that it floods after sitting for 1or 2 minutes after I shut the engine off ....Then I have to hold it to the floor to get it started..... this is damn frustrating
It looks like the spring is either broken or it simply fell of the adjuster...too bad its still leaking fuel into the primary on the passenger side and I have no idea why.
Its a great running carb except for the fact that it floods after sitting for 1or 2 minutes after I shut the engine off ....Then I have to hold it to the floor to get it started..... this is damn frustrating
Drifting
Joined: May 2005
Posts: 1,629
Likes: 4
From: Somers CT
Originally Posted by Bob Onit
Its a great running carb except for the fact that it floods after sitting for 1or 2 minutes after I shut the engine off ....Then I have to hold it to the floor to get it started..... this is damn frustrating
Thread Starter
Melting Slicks
Joined: Mar 2006
Posts: 3,342
Likes: 7
From: Connecticut
Originally Posted by Kalway
So you've got it running good now?
Originally Posted by TopGunn
Needle valve on the float not sealing off the pressure allowing the bowls to overfill maybe ??? Fuels wells leaking badly???
While I had the airhorn off (the carb was still on the car) I filled the float bowl with gas.
It only leaked on the passenger side.
I cant imagine what is causing this
Melting Slicks
Joined: Feb 2003
Posts: 3,053
Likes: 4
St. Jude Donor '03,'11
Originally Posted by TopGunn
Needle valve on the float not sealing off the pressure allowing the bowls to overfill maybe ??? Fuels wells leaking badly???
I bet its all them plugs that need epoxy.
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Thread Starter
Melting Slicks
Joined: Mar 2006
Posts: 3,342
Likes: 7
From: Connecticut
Originally Posted by turtlevette
cracked carb body?. Did you get out your magnifying glass?
Im going to drop it off to the rebuilder Ive been using
He's gonna take a look at it
He has shelves upon shelves of QJet cores so maybe Ill have him bead blast and coat one (the nice gold color) for me and take another shot at rebuilding one from scratch
I think I just got a bad core this time
Ill let you all know what the problem was after I see him
Thany you ALL very much for all your help but I have officially given up on this core
Bob
Last edited by Bob Onit; Jul 18, 2006 at 08:22 PM.
Safety Car
Joined: Dec 2004
Posts: 4,071
Likes: 0
From: San Diego CA
Originally Posted by Bob Onit
Yeah.... I checked everything..
Im going to drop it off to the rebuilder Ive been using
He's gonna take a look at it
He has shelves upon shelves of QJet cores so maybe Ill have him bead blast and coat one (the nice gold color) for me and take another shot at rebuilding one from scratch
I think I just got a bad core this time
Ill let you all know what the problem was after I see him
Thany you ALL very much for all your help but I have officially given up on this core
Bob
Im going to drop it off to the rebuilder Ive been using
He's gonna take a look at it
He has shelves upon shelves of QJet cores so maybe Ill have him bead blast and coat one (the nice gold color) for me and take another shot at rebuilding one from scratch
I think I just got a bad core this time
Ill let you all know what the problem was after I see him
Thany you ALL very much for all your help but I have officially given up on this core
Bob
Sometimes 30 years is a bit hard on carburetors, though.
Thread Starter
Melting Slicks
Joined: Mar 2006
Posts: 3,342
Likes: 7
From: Connecticut
Originally Posted by Kalway
At least you learned alot about how they work, though. Sometimes 30 years is a bit hard on carburetors, though.
Sometimes 30 years is a bit hard on carburetors, though.Now today the damn clutch fell apart on the A/C compressor....WTF....
It's always something.
Safety Car
Joined: Dec 2004
Posts: 4,071
Likes: 0
From: San Diego CA
Originally Posted by Bob Onit
Yes I did
Now today the damn clutch fell apart on the A/C compressor....WTF....
It's always something.
Now today the damn clutch fell apart on the A/C compressor....WTF....
It's always something.
