Help! Ignition Gremlin?
in 912 / 914 Technical Questions
8 years ago
Background:
912UL, 200 TT, recently brought back to service after a long restoration
Dynon D180
Kitfox IV
Problem:
When doing ignition check one module has ~50 rpm drop and other has 400-600 rpm drop with skyrocketing EGT on #3 & 4 (only ones monitored, will quickly pass 1600º).
Attempted Fixes:
New Spark Plugs
Removed, rebuilt, synchronized carbs
Trimmed Spark Plug wires and checked boots - 4.5-5.9K ohms
Used inductive timing light to check for spark on all leads, checked good
Any ideas would be greatly appreciated!
912UL, 200 TT, recently brought back to service after a long restoration
Dynon D180
Kitfox IV
Problem:
When doing ignition check one module has ~50 rpm drop and other has 400-600 rpm drop with skyrocketing EGT on #3 & 4 (only ones monitored, will quickly pass 1600º).
Attempted Fixes:
New Spark Plugs
Removed, rebuilt, synchronized carbs
Trimmed Spark Plug wires and checked boots - 4.5-5.9K ohms
Used inductive timing light to check for spark on all leads, checked good
Any ideas would be greatly appreciated!
