reeds reeds they dont have reeds its a 4 stroke the timing is out or it has riding valves
Incorrect ignition timing or damaged valves would make a 95 Honda Odyssey sputter and backfire. Backfires are directly caused when ignition occurs at the wrong time.
Engine timing is VERY retarded. My first guess: the distributor clamp has loosened.
Using hot fluid in a pressure calibrator can lead to variations in pressure due to the thermal expansion of the fluid, changes in the viscosity of the fluid, and potential thermal drift in the calibration equipment. It is important to consider and compensate for these variations to ensure accurate pressure measurements.
Either the timing or firing sequence is wrong. Go back and check everything.
Having no catalytic converter installed is illegal and can cause a myriad of problems. Probably not a backfire though.
it's lean
backfire timing off
from unburned fuel in the cylinder
timing or a plug not sparking
A sparkplug misfiring.
Most Likely Out Of Time.
Check your timming. It might be advanced too far