well, disconnected the o2 sensor and big deal...still pings badly....correct heatrange ngk plugs...new wires....premium fuel from either chevron/shell or 76...timing is correct...is it time for seafoam in the gas tank and if so what is the prescribed method?? did a search and there are various ways of doing it...i have an 89 spi wgn....didnt know if i should just put in a few gallons and then a whole can of the stuff....run it dry...then do it again...or fill it up and add a can...blah blah blah....any help would be appreciated as i really am getting concerned about the pinging and with the heat here and a new job starting soon i really dont need car problems.....

 

thanx!

Have you tried cleaning out the EGR tube and is the EGR valve working correctly? Also, what temperature thermostat do you have and about where on the gage is the needle staying when the engine is warmed-up?

Have you tried looking at the timing or changing the distributor position slightly?

timing is at 20degrees...advance it more and it gets real loud...less and the ping seems to be better but its a dog then...thermostat stays pretty low all the time, probably around 1/4....

is it throwing any codes or is it just being a subaru? I think taking it down to about 18 degrees BTDC should do it, have you tried unhooking the battery overnight, or for an hour or so, to reset the ECU? better the computer be reset and re-learn the way you drive than for it to ping inself to death. the temp needle should be alittle below halfway when fully warmed up, the EGR vlave suggestion would probably be a good place to continue looking.

 

 

 

 

 

~Josh~

Have you tried cleaning out the EGR tube

 

is there a way to do that without removing the intake manifold? I just tried on my SPFI and it doesn't seem to want to come out. Is there a trick I don't know?

yep, code 32..o2 sensor...havent tried the battery thing yet and ummm,(cough cough) anyone have a pic of the egr tube and valve? i am mechanicly challenged