the fuel pressure gauge you HAD was top grade, SNAP-ON tools not some cheap crap china cloned trash.(C4 trash)
so I take the 50PSI as fact, all we can do as a tech is trust our tools, in fact I have duplicates so I can cross check readings, (and cross check me)
the tools make the man, working on cars, if no tools all we do is guess, (or like you did, cause vacuum leak see 02 wake up and is text book example that is super good test)!!!
all it proved was,. injectors are over injecting, 1 or all 4.
you can also use and IR gun (1 more $15 tool) point it at exhaust tube, 1 ,2,3,4, (mid point top shields off) see if all 4 run the same temp. (this is EG Temp test, exhaust gas temp test)
just like all carb piston air craft engines have for setting fuel mix and not burn up the engine, lean. (see dash enrich knob? " Cessna?))
IF, we see all 4 same, that tells me all 4 injectors are doing the same thing, done on a hot engine , at idle , or at 2500 rpm, held there, for 1 full minute to let it stabilize
(aimed as same distance down from exh. ports)
see?
if all 4 are same then what makes all 4 injectors over inject and not ECT stuck at 150f. if one port super cold the injector may leak.(or spark bad or other causes compression related)
FPR. we know the MAF reads right. so..
so I take the 50PSI as fact, all we can do as a tech is trust our tools, in fact I have duplicates so I can cross check readings, (and cross check me)
the tools make the man, working on cars, if no tools all we do is guess, (or like you did, cause vacuum leak see 02 wake up and is text book example that is super good test)!!!
all it proved was,. injectors are over injecting, 1 or all 4.
you can also use and IR gun (1 more $15 tool) point it at exhaust tube, 1 ,2,3,4, (mid point top shields off) see if all 4 run the same temp. (this is EG Temp test, exhaust gas temp test)
just like all carb piston air craft engines have for setting fuel mix and not burn up the engine, lean. (see dash enrich knob? " Cessna?))
IF, we see all 4 same, that tells me all 4 injectors are doing the same thing, done on a hot engine , at idle , or at 2500 rpm, held there, for 1 full minute to let it stabilize
(aimed as same distance down from exh. ports)
see?
if all 4 are same then what makes all 4 injectors over inject and not ECT stuck at 150f. if one port super cold the injector may leak.(or spark bad or other causes compression related)
FPR. we know the MAF reads right. so..
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