912 Ignition Problem
in 912 / 914 Technical Questions
12 years ago
Recently, while troubleshooting the problem of RPM drop of more than 300 during ignition check i came across ignition mate and used it to measure spark voltage and current during engine run. The values of spark voltage @ 3000 RPM were as follows:
cyl 1 Top 7-10 KV
cy1 1 Bot 9-11 KV
cyl 3 Top 8-11 KV
cyl 3 Bot 6-9 KV
cyl 2 Top 12-14 KV
cy1 2 Bot 14 KV
cyl 4 Top 12-14 KV
cyl 4 Bot 12-14 KV
The manual of ignition mate suggests that the spark voltage values of same polarities must be same.
As cyl 1 and 3 have spark of same polarity that suggests their values must be equal.But i am not sure what these KV values suggest regarding the health of ignition system because i do not have a reference value of spark voltage and current.
If i could get the true values for spark current and voltage that would help me to determine the problem further.
P.S What are the ideal values of primary and secondary coil voltage?
cyl 1 Top 7-10 KV
cy1 1 Bot 9-11 KV
cyl 3 Top 8-11 KV
cyl 3 Bot 6-9 KV
cyl 2 Top 12-14 KV
cy1 2 Bot 14 KV
cyl 4 Top 12-14 KV
cyl 4 Bot 12-14 KV
The manual of ignition mate suggests that the spark voltage values of same polarities must be same.
As cyl 1 and 3 have spark of same polarity that suggests their values must be equal.But i am not sure what these KV values suggest regarding the health of ignition system because i do not have a reference value of spark voltage and current.
If i could get the true values for spark current and voltage that would help me to determine the problem further.
P.S What are the ideal values of primary and secondary coil voltage?
