HI! I have a 1991 Honda Acty HA4 4wd 5sp and can't figure out what my stalling issue is. The truck fires up amazing (always when cold) and will drive perfect A-B. But, when attempting to start it up (5-20) minutes after shut down; It will either start up run for 2 seconds then fail or just crank. Feathering the throttle can produce a ruff idle to limp it back. After about 10-15 minutes of continues driving the issue will self-resolve. I'm guessing it's some sort of vapor lock? The issue becomes more frequent around half a tank. The sub cooling fan doesn't cycle unless you remove the positive terminal and perch it on top the terminal. I sanded and dielectric greased every ground point I could find: 2 on the engine (driver side near PCV thing) One under the bed and the Main Fuze Contacts. I have also replaced: *Timing Belt *ICM * Distributor, Rotor, Cap *Ignition Coil *Ignition Coil Sensor *Spark Plugs + Wires *Rebuilt Carb (gaskets cleaned) *Fuel and Air Solenoid *Fuel Filter This is my first car and I'm stumped.
Welcome to the forums. Do us all a favor and put the make/modle/year of your truck in your signature (at least you stated in in the post and that is helpful). First off dielectric grease is not a conductor. If it gets between the pins or the grounding point it will cause problems. Not an Acty owner but I suspect your carb or fuel delivery is where the issue is. If it starts up cold fine then the choke is working fine and probably the ignition is good as well. After running and being hot, sounds like the choke is either misbehaving or fuel delivery is an issue. If it gets worse as the tank level goes down, start by checking that fuel flow and pressure is to the specs. I would guess the pressure should be between 2 - 3 psi and the flow should be approximately 20 gph at the carb. Also make sure the venting to the tank is working. If when you remove the cap and here a hiss thats a sign that either pressure is building or theres a vaccum on the tank. Use a piece of paper to determine which it is. Either way it could be the charcoal canister or something like that causing issues. I'm sure an Acty dude will come along and provide better details
