so why would the ecu, blow up the second coil?
first actions for spark for me are:
are there 4 new spark wires, and 4 new plugs. (are those wires crappy carboln junk wires, or nice NGK mag core wires, or bosch mag core.>???)
if 1 wire opens then 2 plugs dies. see?
and do you know how to test wasted spark?????
1: unplug the 2 new HV wires, connect them to 2 new gapped plugs, ground both plug shells to the engine. (1/4 pack)
crank it, got spark now? this is the only true way to test wasted spark, with known good loads, a load is the 2 wires new and 2 new spark plugs...
do not use screwdriver checks, this risks overloading the coils and for sure those 2 very rare driver chips... why stress, parts that cant be bought?
2: then repeat on pack 2, ( 2/3 pack)
new wires and 2 new plugs. gapped, to spec. cranking.... (it really is 2 systems here, 2 spark systems.) Only the ECU can kill both, in most cases.
are both really dead now?
again, if 1 HV wire is bad, you will lose 2 cylinders, that is how it works, same if any plug will not fire. same results. 2 dye.
if both SIDES (x4) those fail, then scanning is next.
most ECU will also report, besides CMP,CKP dead, it will say the IGNITOR IS DEAD! most do. 1 or both.
is not scanning that makes all this so hard, id find a way to scan my car.
or buy an ECU and pray it fixes this... it may not. (working blind is like that, causing guessing and failures)
spark plugs can fail many ways, ever use a spark testing machine, we had one in school. and did so under pressure, (simulated combustion pressures)
1: open , circuit , fail (kills to cylinders dead)
2: SHORTED, MORE COMMON. (only 1 cylinder dies, the shorted one)
3: Misfires. (can cause both to fail if one plug fails to spark.) they are wired in SERIES after all...
4: misfires only under pressure.
that is why we do spark tests with a box of new plugs in a box, called test spark plugs, they never are used in the engine, ever. we keep them fresh in pairs.
see why? (to prevent dog chasing tail )
or we use our cute , spark simulator tool that has an adjustable gap, in pairs. ever seen that? you set it to a gap that matches you cars spark energy levels.
1: lawn mower, 10kv
2: 1960 ford, 20kv.
3: first electronic 50kv (my guess is yours)
4: today 100kv. high energy. the gap is clearly marked there... new cars run hug currents and coil turns ratios in the coil. )
we can not only check for spark but see just how good it really is.... quality checks.
first actions for spark for me are:
are there 4 new spark wires, and 4 new plugs. (are those wires crappy carboln junk wires, or nice NGK mag core wires, or bosch mag core.>???)
if 1 wire opens then 2 plugs dies. see?
and do you know how to test wasted spark?????
1: unplug the 2 new HV wires, connect them to 2 new gapped plugs, ground both plug shells to the engine. (1/4 pack)
crank it, got spark now? this is the only true way to test wasted spark, with known good loads, a load is the 2 wires new and 2 new spark plugs...
do not use screwdriver checks, this risks overloading the coils and for sure those 2 very rare driver chips... why stress, parts that cant be bought?
2: then repeat on pack 2, ( 2/3 pack)
new wires and 2 new plugs. gapped, to spec. cranking.... (it really is 2 systems here, 2 spark systems.) Only the ECU can kill both, in most cases.
are both really dead now?
again, if 1 HV wire is bad, you will lose 2 cylinders, that is how it works, same if any plug will not fire. same results. 2 dye.
if both SIDES (x4) those fail, then scanning is next.
most ECU will also report, besides CMP,CKP dead, it will say the IGNITOR IS DEAD! most do. 1 or both.
is not scanning that makes all this so hard, id find a way to scan my car.
or buy an ECU and pray it fixes this... it may not. (working blind is like that, causing guessing and failures)
spark plugs can fail many ways, ever use a spark testing machine, we had one in school. and did so under pressure, (simulated combustion pressures)
1: open , circuit , fail (kills to cylinders dead)
2: SHORTED, MORE COMMON. (only 1 cylinder dies, the shorted one)
3: Misfires. (can cause both to fail if one plug fails to spark.) they are wired in SERIES after all...
4: misfires only under pressure.
that is why we do spark tests with a box of new plugs in a box, called test spark plugs, they never are used in the engine, ever. we keep them fresh in pairs.
see why? (to prevent dog chasing tail )
or we use our cute , spark simulator tool that has an adjustable gap, in pairs. ever seen that? you set it to a gap that matches you cars spark energy levels.
1: lawn mower, 10kv
2: 1960 ford, 20kv.
3: first electronic 50kv (my guess is yours)
4: today 100kv. high energy. the gap is clearly marked there... new cars run hug currents and coil turns ratios in the coil. )
we can not only check for spark but see just how good it really is.... quality checks.
http://www.fixkick.com