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Re: My 1993 Honda accord wont start, I replace the
I like to make sure the timing belt is not skipped or broken by watching the cam turn inside the valve cover. Then I lay a spare spark plug on valve cover connected to any plug wire to see if it sparks. Fuel can be confirmed by smelling the exhaust, or by using starting fluid . These cars are famous for a coil relay solder break problem. The relay is heat expansion damaged, its mounted high up in the dash drivers side corner it is about 3" square gray.
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If the engine cranks over but wont start, the Hondas in that year range have a pretty good size relay under the drivers side of the dash, its about 1 1/2" by 2 1/2'
you can replace it or just take the cover off and if you look at the solder contacts very closely you will see one or two that have a crack around them.
just put a couple of drops of solder on them to fix the bad connection and you will be on your way. literally takes about 10 minutes start to finish
DO A SMALL TUNE UP REPLACE SPARK PLUGS AND WIRES, REPLACE DISTRIBUTOR CAP AND ROTOR, REPLACE FUEL FILTER AND AIR FILTER. IF YOU ARE GETTING FUEL AND SPARK. EITHER IGNITION OFF OR VALVE TIMING OFF YOU VECHICLE HAS A TIMING BELT AND TENSIONER IF TIMING BELT SLIP TIMING IT WILL THROW OFF VALVE TIMING MAKING IMPOSSIBLE TO START CAR.
You've already eliminated the spark plug & wireset, distributor cap & rotor. Sounds like your car needs a tune-up, specifically, the PCV (positive crankcase ventilation) valve, and/of the EGR (Exhaust Gas Recirculation) valve.
Components checked/replaced during a tune-up are: air filter motor oil motor oil filter breather filter fuel filter(s) fuel strainer PCV valve EGR valve spark plugs spark plug wires ECM or distributor cap & rotor cabin air filter transmission oil filter transmission oil engine coolant check all vacuum hoses and lines
Troubleshooting the no-start condition - from the 1990 Mitsu Mighty Max Repair Manual:
Priority Action Part Type -- Cause 1 Inspect Battery -- Battery Discharged or Faulty. 2 Inspect Battery Cable -- Corroded, Broken, Shorted or Poorly Connected Battery Cable. 3 Inspect Distributor Cap -- Distributor Cap Cracked or Burned. 3 Inspect Fuel Filter -- Clogged or Dirty Fuel Filter. 5 Inspect Ignition Coil -- Faulty Ignition Coil. 6 Inspect Wireset -- Worn, Damaged or Faulty Spark Plug Wire(s). 7 Inspect Spark Plug -- Incorrectly Gapped or Fouled Spark Plug(s). 8 Inspect Starter -- Starter Motor Faulty. 9 Inspect Fuel Pump -- Low Fuel Pressure. 10 Inspect Solenoid Switch -- Faulty Starter Solenoid Switch. 11 Inspect Fuel Pump Relay -- Faulty Fuel Pump Relay. 12 Inspect Fuel Injector Pressure Regulator -- Faulty Fuel Injector Pressure Regulator. 13 Inspect Ignition Switch -- Improperly Connected or Faulty Ignition Switch. 14 Inspect Starter Drive -- Faulty Starter Drive. 15 Inspect Fuel Injector -- Dirty or Worn Fuel Injectors. 16 Inspect Fuel Pump Strainer -- Clogged or Dirty Fuel Pump Strainerat. 17 Inspect Engine Control Computer -- Incorrect Operating Information Being Delivered and Sent From The EEC. 18 Inspect Fuel Tank -- Fuel Tank Empty. 19 Inspect Carburetor -- Carburetor Flooded or Faulty Choke. 20 Inspect Distributor -- Worn, Loose, or Incorrectly Installed Distributor.
The Main relay on your vehicle is defective. When the relay is operating while the engine is started and running, it gets hot. Add the hot weather to the relay and they break inside. The relay is located on the side firewall driverside above the left kick plate inside the car,and is secured with a 10mm hex cap screw (bolt). Replace this relay, and your vehicle should start.
It looks like this;