did you check for spark using new spark wires at the coil and test spark lugs, x2 at each coil set?
you do know that an open spark wire, kills both plugs right, in wasted spark fashion.
even a bad spark plug can kill the matching other plug.
say plug 1, is open can fire (its too old) and is not shorted, its open.
that kills cylinder 4 too.
see? this is because they are wired In series and any break in the line, kills 2 plugs not one.
if there is truely no spark we scan the pcm to see why.
if the PCM can see the error we check the , 2 coil pins for the COIL CHARGE TIMES, THEN MAKE SURE THE PULSES LOOK NORMAL.
If only one side is bad. then the coil may be bad. (hope) if the coil primary shorts this can wreck the ECU driver on that one line, not both.
if both lines (coil neg) then the ECU is cutting spark on purpose (see why? ) that is the ECU normal logic.
the ECU has a set of complex rules for making spark,, worst case is below!
1: ckp good, signal (if ckp is too weak it will never start)
2: ckp notch present (missing tooth seen by ecu) the ECU cuts spark if the gap can not be detected !
3: cmp good. signal
4: CMP timing not grossly off time, like when the cam belt slips..... if way off the ECU is protecting the engine for damage, by not allowing 2 cylinders to fire , fighting each other.
on brand new cars the ECU has a code for #4, your probably does not. back in 1996. or the CMP coupling device, is bad, lose. broken, missing or damaged in some why.
or cracked cam shaft, such tha CKP is off time.
or any of those parts related to CAM timing or CMP on the end, are off time for any reasons at all...
here is your tone wheel (well it ours, 1996 beta1 engine ) not saying yours is same , i can't do that. lacking your FSM book.
ours is 58/2 6degree tone wheel.
usa ECU , so yours can be different. but if not , now you know what the scope view will be. 58/2 pulses
![[Image: 3_04_10_15_4_14_42.jpeg]](http://www.fixkick.com/bbs2/Suzuki-bbs/gallery/3_04_10_15_4_14_42.jpeg)
home made mechanical sensors?
you will be hard pressed to make a set of pulley do this,
but can with a disk punched full of 58 holes. (if in fact it is 58, on KDM cars)
and and optical sensor,
you do know that an open spark wire, kills both plugs right, in wasted spark fashion.
even a bad spark plug can kill the matching other plug.
say plug 1, is open can fire (its too old) and is not shorted, its open.
that kills cylinder 4 too.
see? this is because they are wired In series and any break in the line, kills 2 plugs not one.
if there is truely no spark we scan the pcm to see why.
if the PCM can see the error we check the , 2 coil pins for the COIL CHARGE TIMES, THEN MAKE SURE THE PULSES LOOK NORMAL.
If only one side is bad. then the coil may be bad. (hope) if the coil primary shorts this can wreck the ECU driver on that one line, not both.
if both lines (coil neg) then the ECU is cutting spark on purpose (see why? ) that is the ECU normal logic.
the ECU has a set of complex rules for making spark,, worst case is below!
1: ckp good, signal (if ckp is too weak it will never start)
2: ckp notch present (missing tooth seen by ecu) the ECU cuts spark if the gap can not be detected !
3: cmp good. signal
4: CMP timing not grossly off time, like when the cam belt slips..... if way off the ECU is protecting the engine for damage, by not allowing 2 cylinders to fire , fighting each other.
on brand new cars the ECU has a code for #4, your probably does not. back in 1996. or the CMP coupling device, is bad, lose. broken, missing or damaged in some why.
or cracked cam shaft, such tha CKP is off time.
or any of those parts related to CAM timing or CMP on the end, are off time for any reasons at all...
here is your tone wheel (well it ours, 1996 beta1 engine ) not saying yours is same , i can't do that. lacking your FSM book.
ours is 58/2 6degree tone wheel.
usa ECU , so yours can be different. but if not , now you know what the scope view will be. 58/2 pulses
home made mechanical sensors?
you will be hard pressed to make a set of pulley do this,
but can with a disk punched full of 58 holes. (if in fact it is 58, on KDM cars)
and and optical sensor,
http://www.fixkick.com