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#1
03-03-2004, 04:53 AM
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My 78 GP I believe suffers from leak-down, where the fuel in the bowl leaks out over a day or so, dripping down into the intake.
When attempting to start, I have to pump the pedal 8 or 10 times to get new gas in there. I bought a remanufactured carb, I see some goop applied to two spots on the bottom side. Is that where they possibly epoxyed the places where the leakdown occurs? |
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#2
03-03-2004, 04:53 AM
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My 78 GP I believe suffers from leak-down, where the fuel in the bowl leaks out over a day or so, dripping down into the intake.
When attempting to start, I have to pump the pedal 8 or 10 times to get new gas in there. I bought a remanufactured carb, I see some goop applied to two spots on the bottom side. Is that where they possibly epoxyed the places where the leakdown occurs? |
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#3
03-03-2004, 07:09 AM
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That could be, but Wow a Q-Jet that leaks down. usually a Holley Problem.
RAIV Don't leave home without it. www.musclecarrace.com
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http://www.stockappearingdrags.com http://www.stockappearingdrags.com Come on get off that lawn chair and drive that car like it was meant to be driven. 69' 400 RAIV Judge Conv... 12.86@107 Factory Stock 69' 400 RAIV Trans AM .....12.48@110 Factory Stock 69' 400 RAIV Judge HT..... 13.07@104 Factory Stock 73' 455 SD Trans AM........13's?? not run yet 66' 455 GTO Convert.........12.20@112 non original 63' 421 SD Catalina...........restored fast as h*ll |
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#4
03-03-2004, 07:14 PM
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Srercrcr,
Welcome to the Forums. Chronic Q-Jet problem, shut the hot engine off and the contents of the tiny float chamber evaporate causing starter burndown the next time you start the motor. There are lots of band-aid fixes that are largely ineffective, I fixed my signature GP's Q-Jet permanently by installing an inline $30 electric pusher pump near the tank wired to a dash mounted momentary pushbutton switch. While I am fastening my seatbelt, I set the choke and "prime" the carb by holding the button down. The momentary switch eliminates the need for a oil pressure switch circuit. Instant starts and no vapor lock!  Les 66 GTO Sport Coupe,455/trips,700r/2500stall,12bolt/3.08,1.79/13.01/104.5 68 GP daily driver and 2004 Route 66 Tour participant under restoration -------------------------- Better lucky than good
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Les Iden ---------------------------- '65 Buick Sport Wagon Custom, 340, T350, 3:23 '66 GTO Post/468, 700R4, 3.31 (Mike's as of 9-16) '68 Grand Prix/455, dual AFBs, T400, 2:93 posi (sold) '72 TA tribute/461, T400, 3.08, (Russ's as of 9-16) '97 Mitsubishi Eclipse Spyder Turbo, Konis, 5 speed '09 Torrent GXP, nav, Sun & Sound pkg., Bilsteins |
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