Need suggestions!
RV-7 configuration
- 0-360 Titan
- Constant speed prop.
- 900 hours
- Left standard mag
- Right electroair electronic ignition
- upper spark plugs Bosch Automotive
- lower spark plugs Regular champion aircraft
Symptoms:
- Engine stumbling on cruise power settings, max power seems better.
- Stumbles - power loss for 1to 2 seconds and then runs smooth for 45 seconds (all times are not exact and varies unpredictably).
- Fuel pressure reads good and even during the event.
- Manifold pressure rises during the event.
- Doesn't seem Mag dependant. Run-up mags check fine.
- Run-up no problems.
- #1 cylinder few hundred degerees higher EGT than other three on takeoff and climb out
Things checked and flew again with same symptoms.
- Gascolator checked filter -good
- Carb checked filter -good
Both little debris was found but nothing concerning.
- Lower Spark plugs cleaned removed and cleaned - normal for hours
- Very careful checked manifold pressure lines aft of firewall and all good.
Currently talking with a mechanic on field but will not be able to help for several days.
Hospitality has been great and someone is loaning us a hangar while trying to figure this out.
.
RV-7 configuration
- 0-360 Titan
- Constant speed prop.
- 900 hours
- Left standard mag
- Right electroair electronic ignition
- upper spark plugs Bosch Automotive
- lower spark plugs Regular champion aircraft
Symptoms:
- Engine stumbling on cruise power settings, max power seems better.
- Stumbles - power loss for 1to 2 seconds and then runs smooth for 45 seconds (all times are not exact and varies unpredictably).
- Fuel pressure reads good and even during the event.
- Manifold pressure rises during the event.
- Doesn't seem Mag dependant. Run-up mags check fine.
- Run-up no problems.
- #1 cylinder few hundred degerees higher EGT than other three on takeoff and climb out
Things checked and flew again with same symptoms.
- Gascolator checked filter -good
- Carb checked filter -good
Both little debris was found but nothing concerning.
- Lower Spark plugs cleaned removed and cleaned - normal for hours
- Very careful checked manifold pressure lines aft of firewall and all good.
Currently talking with a mechanic on field but will not be able to help for several days.
Hospitality has been great and someone is loaning us a hangar while trying to figure this out.
.
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