carburetor

I have an older 2 barrel Holley Pro-Jection System that surges at low rpm's. When the A/C is engaged the problem magnifies. I had a local Hot Rod mechanic take a look. He believes this Holley is not delivering the volume needed for the 455 engine and is recommending to change to a 4 barrel...

I recently swapped my Onan. It starts and runs reliably— for a while. After a few minutes it starts to run rich and eventually dies. It will then refuse to start for a while. Assuming it was slowly flooding, I disconnected the fuel pump's 12v supply and started it up. It struggled to start, but...

I think I have the routing mostly figured out for the EVAP systems. I unfortunately am in California. I'm not 100% sure I have the "correct" carb on there. For the emissions systems, it appears there are three basic systems or components (correct me if I'm wrong): -The PCV system -The...

Genuine OEM GMC QuadraJet 4MC publications in .pdf format

Quadrajet 4 Barrel Carburetor Manufacture: Rochester Type: R4-4MC (choke on passenger side) GM Motorhome 73-74 (455) 7043254 – Federal GM Motorhome 75-77 (455) 7045254 – Federal – Rebuild Kits: NAPA Echlin 2-5561A 7045554 – California GM Motorhome 77 (403) 17057254 – Federal – Rebuild Kit...