Carl Froehlich
Well Known Member
Recently an RV owner complained about extremely high CHT on his dual electronic ignition engine. The ignitions use a crank sensor and nothing unusual was found. With a timing light however timing (with the manifold pressure line disconnected) was somewhere between 41 and 45 degrees BTDC with the engine at 800 RPM, not the expected 21 or so. This timing was observed on both ignitions.
The ignitions were sent in for repair and now all is well.
This is the first I?ve seen of this happening, but as the manifold sensors failed in both ignitions I suspect it is happening on other people?s RVs.
Recommend doing a real timing light check at each Condition Inspection, and as one of the first steps when high CHTs have you scratching your head.
Carl
The ignitions were sent in for repair and now all is well.
This is the first I?ve seen of this happening, but as the manifold sensors failed in both ignitions I suspect it is happening on other people?s RVs.
Recommend doing a real timing light check at each Condition Inspection, and as one of the first steps when high CHTs have you scratching your head.
Carl