kmaralit

What causes a high HC at idle for a 1987 accord, 2 liter carb? Plugs, wires, cap and rotor changed already.

JimBlake

Rich mixture? Sometimes the float valve sticks, overfilling the float bowl.

P_Adams

The only thing that would cause high Hydrocardons from the ignition system would be a misfire (skip). Because you don't mention any, then the only other culprit is the carburetor (as Jim mentioned). Japanese carburetors have always been a pain in the a...... (that's why Honda went fuel injection with the lxi and ex as soon as they could). Good luck

P

deserthonda

chk for a vacc leak biggest reason for high hc
ck timing, chk vacc adv unit for leak, ,