Thunderbo1t skrev: ↑sön dec 19, 2021 6:35 pm Fuel pressure should never affect AFR when using a carburetor, if it does, for example, the fuel pressure is wrong, or fuel delivery is restricted, or needle valves leaking for some reason, worn, vibrations etc.
Float level affects AFR a little.
Okey,maybe my problem is too high fuel pressure that makes flooding little when running causing the funky spot between 2000-2500rpm? No dripping at idle or when engine not running.
Need to try tomorrow again if there is really difference in afr between 0.15 vs 0.18.
Does electric pump output l/h output stay same with high or low pressure?