Just how the title says, how exactly do I set ignition timing on my 1995 Accord LX F22B2 ? Also what is the difference bettwen base timing and base idle timing ?

 

Some Hondas have a wire connector to short out to set timing but if you completely warm up the vehicle, wait for two cycles of the radiator fan, make sure the fans are not on at the moment and no accessories are on, then you will not need to worry about shorting out the connector. By this time, the computer should be in Closed Loop Operation and you are good to go.

On many cars there is a procedure to set base timing by taking the computer out of the loop by shorting out a connector or disconnecting a connector, it just is not needed in your case. As an example on a Toyota, you would short out the diagnostic connector pins E1 and TE1, if I am not mistaken.

Can you see the timing marks good on the main (harmonic balencer) pulley. Do you know where is the two pin blue diagnostic connector under the dash on your car.

 

is timing supposedly adjustable on these ? Because i believe on some h22a4 (obd2) motors it is supposedly not adjustable which doesnt make much sense to me.

 

yes i know where the connector is ? Your saying the service connector correct ? Under the passenger dash area ?

 

Yes that connector, some folks short it out to check timing, base timing. If there are any pickups / reluctors inside of the distributor, then moving the distributor will adjust timing.

 

im confused on what exactly base timing is ? Is it the timing at idle ?

 

interesting

 

bump

DO i have to jump the service connector ?
Do i only have to set base timing(at idle) ?
Should the car be at operating temp when i do this ?

 

If the engine is at operating temp, radiator fan has run two times, then the service connector does not need to be jumped.

Base timing is taking the computer out of the equation, taking out any feedback that the computer will use to make timing corrections, this is base timing.

Once a Honda fully warms up, you do not need to short out or remove some sort of connector like on many other cars. Honda uses pressure density to calculate its load, or a MAP Sensor, or at idle, the engine is just a plain ole' vacuum pump with minimal fuel injection needed to keep the O2 Sensor active, this is called Closed Loop Operation as long as no fans or other accessories are operational and the car is in Park.

Honda sees no need to use the computer to control timing any further during this scenario, other Makers with MAP Sensors may not follow suit so I do not believe that just because the system is a Pressure Density system that every car follows this setup, but Honda does.