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ULPOWER 260 series, Troubleshooting Manual

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ULPOWER 260 series Troubleshooting Manual Download Page 17

Troubleshooting after first start 

RPM 

Black Smoke, High Fuel 

Consumption, Sooty plugs 

Oil Pressure 

Oil Temp 

Oil Leaks/ 

consumption 

Loss of 

Compression 

Detonation 

Fuel Pump 

failure 

CHT 

variations 

EGT 

variations 

Regulator/ 

Voltage 

drops 

ULP Check 

Light 

CHT 

EGT 

Summary of Contents for 260 series

Page 1: ...Interactive Troubleshooting Guide Version 2 0 Click an engine or scroll to next page to continue...

Page 2: ...Contents Instructions Before first start checks Trouble shooting guide...

Page 3: ...is linked between topics You may always return to the Troubleshooting Start Page for troubleshooting by clicking on the ULPower logo on the top right of each page You may also simply scroll through th...

Page 4: ...n Reconnect sensor light goes off 5 Start up routine with COIL checks Ignition coils set coil 1 ON coil 2 OFF Throttle max 30 open normally cracked open Safety check area clear and shout clear prop Ma...

Page 5: ...first start after first start TROUBLESHOOTING STARTS HERE Remember to always work i a w the latest manuals If you are unsure of what action to take or unable to resolve your problem contact your local...

Page 6: ...to start at FIRST START Start button Grounding ECU connection Ignition cables Fuel system Sparkplugs Coils ECU Wiring loom Injectors Click text or the image above for an aspect you suspect or if unsur...

Page 7: ...e and connection of ground cable between the engine and the airframe 3 Check using a multimeter check for continuity i e that there is no break from engine to the negative terminal on the battery This...

Page 8: ...h ends of the ignition cable coil side sparkplug side The connectors will remain in place if installed correctly If they break free REMAKE THE CONNECTION Check if both connectors from the wiring loom...

Page 9: ...bles Check HT cable orientation are HT cables correctly installed between cylinders spark plugs and coils 4 Cylinder 260 350 series 6 Cylinder 390 520 series NOTE for RR engines see relevant installat...

Page 10: ...epending on the installation there may be a DPST switch to select pumps and or an over ride switch UNDERSTAND THE INSTALLATION YOU ARE WORKING ON BEFORE TROUBLESHOOTING Fuel Pump Control Relay FPCR Wi...

Page 11: ...sufficient volume at the intake 4 Are you sucking air Check pick up points in the tanks and no weak spring drains that allow air to be sucked if necessary provide fuel from a slave tank to test flow 5...

Page 12: ...the ground or use a new spark plug Engage starter engine Check if there is a spark CAUTION HIGH VOLTAGE NOTE You may not see the spark in bright sunlight shield it for better visibility Method 2 prefe...

Page 13: ...IS LIVE Using a multi meter set to DC volts Measure voltage between ground and control signal wire see right If you have 0v there is a short circuit between ground and control signal wire in the wirin...

Page 14: ...nals min 12 V If not ok change battery and try to start engine again If ok disconnect both coils for safety reasons Master ON and ECU ON NOTE ENGINE IS LIVE Measure voltage between and on the ECU wiri...

Page 15: ...l wires green browns grey yellow white shrink sleeve to avoid contact with each other or ground Use a separate fully charged battery do not connect two batteries together Connect the blue shrink sleev...

Page 16: ...ECU ON NOTE ENGINE IS LIVE Keep the additional injector close to your ear Engage the starter of the engine Listen to hear click click click If no it means that there is no signal coming from the ECU o...

Page 17: ...start RPM Black Smoke High Fuel Consumption Sooty plugs Oil Pressure Oil Temp Oil Leaks consumption Loss of Compression Detonation Fuel Pump failure CHT variations EGT variations Regulator Voltage dr...

Page 18: ...LE CABLE As per the installation manual the throttle cable should never be installed taut or tight from the engine to the firewall Always install it with some slack see IM NB If the throttle cable is...

Page 19: ...6 bolts at manifold inlet tubes at each cylinder head Remove the air filter and check if both screws and throttle axle are still in place Check fuel line size routing condition and connections are i a...

Page 20: ...t working properly reading an incorrect temperature the fuel air mixture will not be correct OIL TEMPERATURE SENSOR OTS PROBLEM If the OTS values are reading between 30 C and 140 C the check light wil...

Page 21: ...dle first Allow engine to cool and check spark plugs If the spark plugs are grey clear the mixture is correct AIR PRESSURE SENSOR APS PROBLEM INSTALLATION ISSUE If the APS installed in the ECU is not...

Page 22: ...nometer or ask your ULP agent for the oil and fuel pressure trouble shooting kit Adjust the parameters on your instrument or change the sensor until logged values are very close to equal the manometer...

Page 23: ...ick INLET AIR TEMPERATURE IS TOO HIGH If the air filter is taking in hot air due to its location inside the engine compartment the engine temperature will rise and consequently the oil temperature wil...

Page 24: ...is no interference with the air coming through the cylinder heads and create an escape way out of the engine room that is big enough See installation manual for a testing procedure Your oil cooler ins...

Page 25: ...r instrument replace if necessary NO SPARK OR NO FUEL INJECTION check ignition system or spark plug check fuel injector RAM AIRBOXES NEED MODIFICATION An equal amount of fresh air is required to ALL c...

Page 26: ...r can reach the air boxes Close all gaps around the air boxes That way the airflow is forced to go over the cylinder cylinder heads Incoming air must find an easy way out Make sure there is no interfe...

Page 27: ...the senor and adjust your instrument replace if necessary NO SPARK OR NO FUEL INJECTION EGT is the best parameter to check if the cylinders are working properly If the EGT value drops out completely a...

Page 28: ...re and higher temperatures and risk of detonation How to prevent air suction Make sure the suction line to the fuel pump can never whatever attitude your plane is in suck air from the fuel tanks Make...

Page 29: ...ternators are 3 phase AC generators How to check the 3 phases Disconnect the 3 pin connector on the alternator wiring Run the engine usual safety conditions apply Carefully measure the voltage between...

Page 30: ...ls with a voltmeter on Volts DC whilst the regulator is connected and the engine is running A fully charged battery should read 14 3 14 5 V at least 12 5 v is needed to fly safely VOLTAGE DROP ON REGU...

Page 31: ...ature altitude temperature or crankshaft position sensor the ULP check light will be illuminated indicating a sensor disconnection or failure Install ULRead on your PC and use the ULRead CABLE to find...

Page 32: ...es the separator through the air breather line For safety reasons we advise to install an air breather vent line yourself Make sure this line cannot touch the muffler or can get blocked for some reaso...

Page 33: ...latest maintenance manuals OIL CONSUMPTION The engine will only CONSUME oil when oil can enter the combustion chamber Check compression for piston piston rings procedure here cracked pistons damaged...

Page 34: ...earance i a w the latest maintenance manual BUILD UP OF LEAD DEPOSIT 100LL AVGAS contains TEL Tetra Ethyl Lead Consequently when running on 100LL lead deposits may build up on the valves and valve sea...

Page 35: ...burn away the exhaust valve Check valve and replace if necessary Remachine lap the valve seats as required i a w the maintenance manuals PISTON PROBLEM A cracked or pitted piston and or damaged pisto...

Page 36: ...lting in pressures of up to 30 bar Such high pressure pushes the rubber anti return valve in the fuel pump and can jam or block the system On the next engine run the fuel pump may not be able to unblo...

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