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Thermoquad geyser! #1182899 02/20/12 03:56 PM 02/20/12 03:56 PM
Joined: Dec 2004 Posts: 733 Northern Virginia Moparmaniacc OP super stock
Moparmaniacc OP super stock Joined: Dec 2004 Posts: 733 Northern Virginia	Since I was off today I decided to try out the '76 thermoquad I bought off ebay. I got lazy and just installed it, because it looked so clean and untouched. Motor started up fairly quickly but then I peered thru the hood opening and saw fuel gushing out of the bowl vent tube! I shut it down and cleaned up the gas mess. I guess that means the float is saturated and sunk to the bottom, or the level needs adjusting? Anything else that could have caused it?

Re: Thermoquad geyser! [Re: Moparmaniacc] #1182900 02/20/12 04:25 PM 02/20/12 04:25 PM
Joined: Apr 2003 Posts: 12,234 Looking for a way out of Middl... IMGTX I Live Here
IMGTX I Live Here Joined: Apr 2003 Posts: 12,234 Looking for a way out of Middl...	Remove the top for a look. Could be the needle & seat are shot. Could be a stuck float. Could be a bad float. Could be parts are missing. Don't forget there are two screws inside the choke airhorn.

Re: Thermoquad geyser! [Re: IMGTX] #1182901 02/20/12 08:39 PM 02/20/12 08:39 PM
Joined: Mar 2006 Posts: 9,835 MI, usa dvw master
dvw master Joined: Mar 2006 Posts: 9,835 MI, usa	There are 2 O-rings between the plastic bowl and cover. If they're shrunk the bowl will overflow. Doug

Re: Thermoquad geyser! [Re: Moparmaniacc] #1182902 02/20/12 09:04 PM 02/20/12 09:04 PM
Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska	replace the needle/seat assy's and adj float levels. Might be able to wipe the needle neoprene tapered tip with your thumb to clean/smooth it. blow the 2 seats clean check the brass seats for snugged then install the 2 rubbed clean needles then the float assy's. live every 24 hour block of time like it's your last day on earth

Re: Thermoquad geyser! [Re: dvw] #1182903 02/20/12 09:13 PM 02/20/12 09:13 PM
Joined: Jan 2004 Posts: 27,347 Today? Who Knows? 1_WILD_RT Management Trainee
1_WILD_RT Management Trainee Joined: Jan 2004 Posts: 27,347 Today? Who Knows?	Quote: There are 2 O-rings between the plastic bowl and cover. If they're shrunk the bowl will overflow. Doug [/quote Actually it won't overflow because of those... It will run crazy rich but not overflow... That has to be an issue with the needles & seats or floats... I never trust an old carb till I've looked inside... "The Armies of our ancestors were lucky, in that they were not trailed by a second army of pencil pushers."

Re: Thermoquad geyser! [Re: 1_WILD_RT] #1182904 02/20/12 10:04 PM 02/20/12 10:04 PM
Joined: Jan 2003 Posts: 42,714 Spokane Washington ScottSmith_Harms Mr Wizzard
ScottSmith_Harms Mr Wizzard Joined: Jan 2003 Posts: 42,714 Spokane Washington	Yep, best "Blind guess" is a stuck float/needle/seat issue.

Re: Thermoquad geyser! [Re: ScottSmith_Harms] #1182905 02/20/12 10:10 PM 02/20/12 10:10 PM
Joined: Dec 2004 Posts: 733 Northern Virginia Moparmaniacc OP super stock
Moparmaniacc OP super stock Joined: Dec 2004 Posts: 733 Northern Virginia	Thanks for the advice. I have heard about the O ring problems with these carbs. Unfortunately I have to wait till next week before I'll have time to tear it apart...

Re: Thermoquad geyser! [Re: 1_WILD_RT] #1182906 02/20/12 10:29 PM 02/20/12 10:29 PM
Joined: Mar 2006 Posts: 9,835 MI, usa dvw master
dvw master Joined: Mar 2006 Posts: 9,835 MI, usa	Quote: Quote: There are 2 O-rings between the plastic bowl and cover. If they're shrunk the bowl will overflow. Doug [/quote Actually it won't overflow because of those... It will run crazy rich but not overflow... That has to be an issue with the needles & seats or floats... I never trust an old carb till I've looked inside... You're correct brain dead on my part. I was just thinking rich. Doug

Re: Thermoquad geyser! [Re: dvw] #1182907 02/22/12 01:19 AM 02/22/12 01:19 AM
Joined: Jan 2003 Posts: 14,610 Not2farfromNashville, TN R Rug_Trucker I Live Here
Rug_Trucker I Live Here R Joined: Jan 2003 Posts: 14,610 Not2farfromNashville, TN	Quote: There are 2 O-rings between the plastic bowl and cover. If they're shrunk the bowl will overflow. Doug Would it come out the top? NAPA sells brass floats. "The only thing to do for triumph of evil is for good men to do nothing" "NUNQUAM NON PARATUS!"

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