beastbikes Posted October 16, 2004 Share Posted October 16, 2004 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 Quote Link to comment Share on other sites More sharing options...
WJM Posted October 16, 2004 Share Posted October 16, 2004 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. Quote Link to comment Share on other sites More sharing options...
beastbikes Posted October 17, 2004 Author Share Posted October 17, 2004 i checked the timing it was perfect not evin a half a degree off thanks anyways Quote Link to comment Share on other sites More sharing options...
subynut Posted October 17, 2004 Share Posted October 17, 2004 Any codes? CEL on? Quote Link to comment Share on other sites More sharing options...
beastbikes Posted October 17, 2004 Author Share Posted October 17, 2004 no codes and the CEL isnt on Quote Link to comment Share on other sites More sharing options...
Skip Posted October 17, 2004 Share Posted October 17, 2004 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 Quote Link to comment Share on other sites More sharing options...
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