what happens many times
we do 100 tests.... you name it ,all
then find 4 bad cop boots
you can in fact spend $1000 shop labor, doing that.... skipping past spark bad. step 2
or use a spark live scope tester and see if spark misfires.and why, every time,.
1 engine good
2 sparks good?
3 we check all fueling and find its ok. back to spark. (we can not trust the ECU to tell you this,,, the ECU is only a limited tool)
if a boot or coil is bad
the plasma is wrong, we can see actual spark plasma burning fuel
we can see which cylinders misfire, and WHY with a scope, 1961 to now, (SUN-300 then)
that is why most shops try new boots first, knowing full well, no human on earth can see the rubber boot molecular degeneration using only their eyes. (unless driven a full year misfiring and look burned up now... )
in the OLD days,seen distributor caps carbon tracked (shorts)WHERE no human can find... spark can do that. all HV systems can.
I call it boots.bad
if i drove it and felt true misfire.
but I cant drive,it, and tell if its misfire or microbogs. (micro bogs are transitory lean fuel starvation)
the real question is,how diagnose cars, with no tools
hard, very hard. (guess away?)
we do 100 tests.... you name it ,all
then find 4 bad cop boots
you can in fact spend $1000 shop labor, doing that.... skipping past spark bad. step 2
or use a spark live scope tester and see if spark misfires.and why, every time,.
1 engine good
2 sparks good?
3 we check all fueling and find its ok. back to spark. (we can not trust the ECU to tell you this,,, the ECU is only a limited tool)
if a boot or coil is bad
the plasma is wrong, we can see actual spark plasma burning fuel
we can see which cylinders misfire, and WHY with a scope, 1961 to now, (SUN-300 then)
that is why most shops try new boots first, knowing full well, no human on earth can see the rubber boot molecular degeneration using only their eyes. (unless driven a full year misfiring and look burned up now... )
in the OLD days,seen distributor caps carbon tracked (shorts)WHERE no human can find... spark can do that. all HV systems can.
I call it boots.bad
if i drove it and felt true misfire.
but I cant drive,it, and tell if its misfire or microbogs. (micro bogs are transitory lean fuel starvation)
the real question is,how diagnose cars, with no tools
hard, very hard. (guess away?)
http://www.fixkick.com