Q-jet starting issue

Ben Kallies · 07-30-2007, 05:26 PM

I have a Q-jet on my '71 Corvette Stocker (454/365). Whenever it sits for an extended period of time, the carb will not squirt any fuel. It doesn't matter whether or not the fuel pump is running. So I remove and disassemble the carb, find nothing, reassemble and reinstall the carb and it works fine. This has happened the last 3 times I've let it sit for an extended period. Any ideas? Remedies? Common problem?
Ben Kallies C/S 3869

SSDiv6 · 07-30-2007, 08:27 PM

What type of pump material are you using? Viton (rubber) or leather? The leather pump material tends to dry and shrink and not pump.

Ben Kallies · 07-30-2007, 09:42 PM

I'm fairly certain that it is rubber. It is whatever Edelbrock sells in their new rebuild kits. Thanks for your reply. - Ben

Alan Roehrich · 07-30-2007, 10:10 PM

Is there actually fuel in the carb? Have you tried pushing the float down?

NovaMan · 08-01-2007, 04:44 PM

It only happens when the car sits for long periods of time... could it be that the gas is just evaporating?

Edit: duh, if the fuel pump is running, that can't be the problem. Note to self: read others' posts thoroughly before replying.

07-30-2007, 05:26 PM	#1
Ben Kallies Member Join Date: Jan 2005 Location: Milwaukee, WI Posts: 105 Likes: 2 Liked 0 Times in 0 Posts	Q-jet starting issue I have a Q-jet on my '71 Corvette Stocker (454/365). Whenever it sits for an extended period of time, the carb will not squirt any fuel. It doesn't matter whether or not the fuel pump is running. So I remove and disassemble the carb, find nothing, reassemble and reinstall the carb and it works fine. This has happened the last 3 times I've let it sit for an extended period. Any ideas? Remedies? Common problem? Ben Kallies C/S 3869

07-30-2007, 08:27 PM	#2
SSDiv6 VIP Member Join Date: Feb 2003 Location: Glendale, Arizona Posts: 2,991 Likes: 693 Liked 1,457 Times in 543 Posts	Re: Q-jet starting issue What type of pump material are you using? Viton (rubber) or leather? The leather pump material tends to dry and shrink and not pump.

07-30-2007, 09:42 PM	#3
Ben Kallies Member Join Date: Jan 2005 Location: Milwaukee, WI Posts: 105 Likes: 2 Liked 0 Times in 0 Posts	Re: Q-jet starting issue I'm fairly certain that it is rubber. It is whatever Edelbrock sells in their new rebuild kits. Thanks for your reply. - Ben

07-30-2007, 10:10 PM	#4
Alan Roehrich VIP Member Join Date: May 2006 Location: Murfreesboro TN Posts: 4,914 Likes: 995 Liked 1,042 Times in 274 Posts	Re: Q-jet starting issue Is there actually fuel in the carb? Have you tried pushing the float down? __________________ Alan Roehrich 212A G/S

08-01-2007, 04:44 PM	#5
NovaMan Member Join Date: Sep 2004 Location: Kalamazoo, MI Posts: 117 Likes: 0 Liked 0 Times in 0 Posts	Re: Q-jet starting issue It only happens when the car sits for long periods of time... could it be that the gas is just evaporating? Edit: duh, if the fuel pump is running, that can't be the problem. Note to self: read others' posts thoroughly before replying. __________________ ~Pete 1970 Nova Last edited by NovaMan; 08-01-2007 at 04:46 PM.