the real confusing thing is pram 10, long term fuel trim.
short is +9 (super lean) (adding lots of fuel here. so is lean at this high power demand) (this means adding 9% more after maf is computed)
long is -0.8 (seems late to catch up to above.) could be late and no valid.
i guess its bogging, starving for fuel.
i'd try propane tests (add this new fuel to see if bog abates some)
make sure fuel pressure is at spec, at any bog. (can be very hard to do this) I know.
there is no data there to tell why it leaning out, besides.
my trim looks like this. bottom red lines.
http://www.fixkick.com/ECU/palmer/96M-log2w.jpg
the maf never goes normal, at wot ever. never goes near 50, (sure if no fuel flow how can it)
the 300 DTC happened at 1/2 engine load, 50 % approx. (cant go higher due to bog)
my guess is it is going lean, and if felt as a smooth non violent bogging, like driving in deep mud or a swap bog. lack of power, engine I guess is putting out 40HP max, not 95HP/
the maf can not reach 50 because the fuel injectors are not flowing.fully.
this old ECU does no have injector PULSE width, readings , but im sure its going to max, if the MAF works so be PWM to the injectors at max, flogging it wot.
the fuel pressure are very important, for sure a working FPR, to get that
the FPR runs pressures to max at wot. full 36psi on mine, (30 at idle) but must rise by 6psi, or the fpr is dead. usually if keyon, no start is 36psi its ok.
if all that is ok then the injectors are packed. (gummed up from bad fuel)
short is +9 (super lean) (adding lots of fuel here. so is lean at this high power demand) (this means adding 9% more after maf is computed)
long is -0.8 (seems late to catch up to above.) could be late and no valid.
i guess its bogging, starving for fuel.
i'd try propane tests (add this new fuel to see if bog abates some)
make sure fuel pressure is at spec, at any bog. (can be very hard to do this) I know.
there is no data there to tell why it leaning out, besides.
my trim looks like this. bottom red lines.
http://www.fixkick.com/ECU/palmer/96M-log2w.jpg
the maf never goes normal, at wot ever. never goes near 50, (sure if no fuel flow how can it)
the 300 DTC happened at 1/2 engine load, 50 % approx. (cant go higher due to bog)
my guess is it is going lean, and if felt as a smooth non violent bogging, like driving in deep mud or a swap bog. lack of power, engine I guess is putting out 40HP max, not 95HP/
the maf can not reach 50 because the fuel injectors are not flowing.fully.
this old ECU does no have injector PULSE width, readings , but im sure its going to max, if the MAF works so be PWM to the injectors at max, flogging it wot.
the fuel pressure are very important, for sure a working FPR, to get that
the FPR runs pressures to max at wot. full 36psi on mine, (30 at idle) but must rise by 6psi, or the fpr is dead. usually if keyon, no start is 36psi its ok.
if all that is ok then the injectors are packed. (gummed up from bad fuel)
http://www.fixkick.com