Q-Jet Problems - The 1947 - Present Chevrolet & GMC Truck Message Board Network

bwright · 06-10-2005, 10:40 AM

Just started yesterday. Symptoms: won't start, leaking fuel onto the intake manifold.

Even and temporary fix would help (I'm going to pull the motor anyhow), just to get the thing into the garage.

Brad_Olson · 06-10-2005, 11:31 AM

Any idea where on the carb the leak is?

Brad

bwright · 06-10-2005, 11:49 AM

It appears to be coming out the top...hard to tell for sure though. I got it running (barely) but it died just as I was pulling in the garage and it wouldn't start (flooded).

Brad_Olson · 06-10-2005, 12:49 PM

Could be a bad float or some debris is preventing the inlet needle from seating. Sounds like it might be time for a new float at the very least...

Brad

jermasaurus · 06-10-2005, 06:37 PM

If it is coming out the vent, it is may be a saturated float or debris like Brandon said.
I don't know if it's a daily driver or what but if you have the time, pull that thing off and check it out. I was kind of intimidated by all the parts in the quadrajet, but if you read a manual as you go you can really get an understanding of whats going on.

jimfulco · 06-13-2005, 12:58 AM

Try tapping the carb inlet area with the plastic handle of a big screwdriver. Sometimes it will dislodge the offending float & get it working normally again.

bwright · 06-13-2005, 08:33 AM

Thank everyone for the help. I ended up getting it to run (barely) long enough to get it in the garage (where I'm tearing it down for resto anyhow).

06-10-2005, 10:40 AM	#1
bwright Registered User Join Date: May 2004 Location: Dickson, TN Posts: 141	Q-Jet Problems Just started yesterday. Symptoms: won't start, leaking fuel onto the intake manifold. Even and temporary fix would help (I'm going to pull the motor anyhow), just to get the thing into the garage.

06-10-2005, 11:31 AM	#2
Brad_Olson Active Member Join Date: Mar 2005 Location: Stoughton, WI Posts: 187	Any idea where on the carb the leak is? Brad

06-10-2005, 11:49 AM	#3
bwright Registered User Join Date: May 2004 Location: Dickson, TN Posts: 141	It appears to be coming out the top...hard to tell for sure though. I got it running (barely) but it died just as I was pulling in the garage and it wouldn't start (flooded).

06-10-2005, 12:49 PM	#4
Brad_Olson Active Member Join Date: Mar 2005 Location: Stoughton, WI Posts: 187	Could be a bad float or some debris is preventing the inlet needle from seating. Sounds like it might be time for a new float at the very least... Brad

06-10-2005, 06:37 PM	#5
jermasaurus Registered User Join Date: Dec 2004 Location: New Lenox, IL Posts: 442	If it is coming out the vent, it is may be a saturated float or debris like Brandon said. I don't know if it's a daily driver or what but if you have the time, pull that thing off and check it out. I was kind of intimidated by all the parts in the quadrajet, but if you read a manual as you go you can really get an understanding of whats going on.

06-13-2005, 12:58 AM	#6
jimfulco Registered User Join Date: May 2003 Location: Shreveport LA Posts: 3,170	Try tapping the carb inlet area with the plastic handle of a big screwdriver. Sometimes it will dislodge the offending float & get it working normally again.

06-13-2005, 08:33 AM	#7
bwright Registered User Join Date: May 2004 Location: Dickson, TN Posts: 141	Thank everyone for the help. I ended up getting it to run (barely) long enough to get it in the garage (where I'm tearing it down for resto anyhow).



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