rich fuel mix

[beastbikes]

my 88 gl fuel injected sube has a problem with its fuel mix i just changed my plug wires and checked my distributer. the exaust smells like gas, so i think that the fuel mix is too rich. i also noticed a loss in power and some missinging in the 3k to 4k rpm range. it may be the fuel pressure regualtor? i dont know if anyone can give me some advice please post it

 

thanks

[WJM]

my 88 gl fuel injected sube has a problem with its fuel mix i just changed my plug wires and checked my distributer. the exaust smells like gas, so i think that the fuel mix is too rich. i also noticed a loss in power and some missinging in the 3k to 4k rpm range. it may be the fuel pressure regualtor? i dont know if anyone can give me some advice please post it

 

thanks

 

Could be that the disty is too far retarded...advance it some/check the timing and make sure the timing is correct. Should be around 20 deg BTDC.

[beastbikes]

i checked the timing it was perfect not evin a half a degree off

 

thanks anyways

[subynut]

Any codes? CEL on?

[beastbikes]

no codes and the CEL isnt on

[Skip]

The ECU watches the mix via the 02 sensor.

It then changes the injector pulse width duration to

adjust the A/F ratio.

Operative unit -->the 02 sensor.

 

Subaru engineers have been forward thinking enough

to provide you with a relatively simple way to monitor this.

 

Remove the panel under the steering col.

warm the engine to op temp.

Watch the LED on the end of the ECU

(bolted under the st. col.)

 

(this LED is called the 02 monitor BTW

and is the same one for checking error codes)

 

At idle the light should flash in random intervals

with a frequency of approx. once every

few seconds.

IF it does not flash the 02 sensor is tired

and wants replaced.

NOTE: contrary to what people will tell you

a lazy 02 sensor will NOT set an error code in the ECU.

 

You may be running rich and have fouled spark plugs

put a set of fresh NGK's in if you can afford it.

 

Hope this helps