Honda Gcv160 Lawn Mower Surging . I cleaned the carburetor, replaced all the intake gaskets and it has a brand new air filter. How to repair lawnmower vacuum leak. Honda Lawn Mower Engine Carburetor Adjustment Reviewmotors.co from reviewmotors.co Hi, i'm after some advice regarding my honda gcv160 (victa body) lawn mower. The engine starts, runs about 3 minutes and then starts stumbling, backfiring, and eventually will stall out. Disassemble and the give the carburetor a good cleaning.