JerrodR
CB750 Member
So last Summer I made the unfortunate mistake of allowing a Buddy to take My 78 K on a "Quick Cruise". He Returned 2 Hour's later with a blown Head Gasket and a Warped Head. FF to this passed Summer I snagged a Replacement Head off eBay and Swapped the Original out. The Replacement is Functioning Perfect Mechanically, but I quickly Realize it's Running super Lean. I have a bit of Tuning experience so I got to Work. I Replaced the Accelerator Pump, and worked My way up to a #135 Main Jet and the damn thing is still Lean.. At #125 it would Run Great under 4k, but as soon as it got into the Main Jet it would Lean out and fall on it's Face. No idea what's going on, any advice is Welcome.