11-16-2015, 05:39 AM
please be aware that the real world is analog.
and wear and contamination, varies, by age of car and use or abuse. and pure luck (bad gas)
nobody can tell you what to do with any injector. (cept to get them cleaned if suspect)
injector have many failure modes...(im not listing them all) partial clogging of tiny spray nozzles, sticking? or will not flow 100% at wide open throttle?
mostly when all things are checked first, we then check the injectors, they can also leak.
tuning any car lacking a scan tool is and exercise in pure grief..... and takes full set of meters and a scope.
in may causes i've had to connect wires to sensors and then to my logging DMM meter, drive and log data to find problems.
it's a long and tedious job, the cure is buy a 1996+ car ,, solved. ($10 scan tool saves day and most all that excess work)
same with MPG, no scan tool, means you never know engine is running right?, until MPG looks good! and if not?, we know zero, as to why.
the older car is not just more difficult , is very difficult.
In fact, that is why they invented OBD2, (1/2 the reason,smog is other) was major mech. shops complained to Congress. (we need a standard tool to scan, so we can stop guessing and stop wasting 3 days on endless manual testing.... endless.....
the lack of tools meant that the engine issues were not corrected, or only in part and this too increased smog in the whole fleet.
motor.com has the history of that...
http://www.motor.com/articles.asp
Why not buy the rhino tool.. ? its not expensive. (software free , buy cable)
I'd not run pre 96 with out it. (did so back in 2007 but there was no tool then)
and wear and contamination, varies, by age of car and use or abuse. and pure luck (bad gas)
nobody can tell you what to do with any injector. (cept to get them cleaned if suspect)
injector have many failure modes...(im not listing them all) partial clogging of tiny spray nozzles, sticking? or will not flow 100% at wide open throttle?
mostly when all things are checked first, we then check the injectors, they can also leak.
tuning any car lacking a scan tool is and exercise in pure grief..... and takes full set of meters and a scope.
in may causes i've had to connect wires to sensors and then to my logging DMM meter, drive and log data to find problems.
it's a long and tedious job, the cure is buy a 1996+ car ,, solved. ($10 scan tool saves day and most all that excess work)
same with MPG, no scan tool, means you never know engine is running right?, until MPG looks good! and if not?, we know zero, as to why.
the older car is not just more difficult , is very difficult.
In fact, that is why they invented OBD2, (1/2 the reason,smog is other) was major mech. shops complained to Congress. (we need a standard tool to scan, so we can stop guessing and stop wasting 3 days on endless manual testing.... endless.....
the lack of tools meant that the engine issues were not corrected, or only in part and this too increased smog in the whole fleet.
motor.com has the history of that...
http://www.motor.com/articles.asp
Why not buy the rhino tool.. ? its not expensive. (software free , buy cable)
I'd not run pre 96 with out it. (did so back in 2007 but there was no tool then)
http://www.fixkick.com