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71cadc10 · 02-24-2005, 12:22 AM

does sound like a fuel delivery problem. Are you running a Qjet?

loss of vacuum won't have an effect on your WOT performance. Idle and part throttle would suffer though. It's more likely fuel related.

If so the inline fuel filter at the carb inlet could be blocked. within a year this can happen. I take the inline filter at the inlet out completely and run a better filter upstream farther.

Qjets don't have much fuel capacity with the single center fuel bowl anyway. When the secondaries are open (WOT) for a while going up thru the gears a lot of stock Qjets will run out of fuel top of 2nd gear. A restriction in the inlet filter aggravates the problem....

02-24-2005, 12:22 AM	#2
71cadc10 Registered User Join Date: Apr 2004 Location: Boiling Springs, PA Posts: 435	does sound like a fuel delivery problem. Are you running a Qjet? loss of vacuum won't have an effect on your WOT performance. Idle and part throttle would suffer though. It's more likely fuel related. If so the inline fuel filter at the carb inlet could be blocked. within a year this can happen. I take the inline filter at the inlet out completely and run a better filter upstream farther. Qjets don't have much fuel capacity with the single center fuel bowl anyway. When the secondaries are open (WOT) for a while going up thru the gears a lot of stock Qjets will run out of fuel top of 2nd gear. A restriction in the inlet filter aggravates the problem.... __________________ 71 C10 long bed, 2003 6.0L, 06GTO E40, T56, 12bolt 4.10 rear Last edited by 71cadc10; 02-24-2005 at 12:24 AM. Reason: adding info