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03-23-2013, 05:51 PM
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Simple? What's simple?
 
Join Date: Apr 2007
Location: Southeast CT
Posts: 1,472
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When did the return lines start appearing??
I'm having a problem with my new '72 1ton GMC. It's a 350/4bbl and so far as I can tell it has only a supply, no return. The build date is 11/71 if that makes a difference.
Anyway, the problem is that I get a fuel starving problem under any kind of load ... new fuel pump and hard/rubber lines on the frame, the line in the cab is original. I'm leaning towards the filter inside the tank?? Could carb filter cause this issue? The fuel siphons from the tank easily and the pump is pushing plenty of fuel sitting still.
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CURRENT '50 GMC 100 shortbed Gen IV 4.8 LS - 4L65E (Secret truck, Shhh!!!) Build '63 Buick Wildcat Coupe 401ci Nailhead (Very much in pieces) Photos '66 Impala SS convertible 327-QJet-glide (4 speed swap one of these days...) Photos '69 CST/10 4x4 SWB Stepper 350 2bbl - NV4500/NP241C (Broken Truck!) '72 Sierra Grande 2WD LWB fleetside 350-TH350 Refresh '99 K2500 Silverado RCLB 5.7 Vortec - NV4500/NP241C (Daily) '99 K2500 Suburban 7.4 Vortec - NV4500/NP246 (still working out the bugs) SOLD '71 Custom/10 2WD LWB fleetside - '72 GMC K/3500 Dually (Sold to redryder) |
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