Your Marcos Mantis engine control system detects a problem, the computer stores the diagnostic trouble
code C3148 in its memory.
To figure out what is wrong with your vehicle you must first extract the C3148 DTC For Marcos Mantis.
To solve C3148 Marcos Mantis problem, you'll have to remove the muffler, crankcase and other components blocking the valve chamber. Then, remove the cylinder head bolts (label for easy re-installation) Adjust the jaws of the valve spring compressor until they touch the top and bottom of the valve chamber Push the tool in to compress the spring and tighten the jaws Remove the retainers and lift out the valves , compressors and springs
C3148 Marcos Mantis DTC Meaning
Chassis Code - Problem is controller area network wiring bus and modules.
SAE - Generic
Fuel And Air Metering
Control Module Throttle Actuator Position Performance
Park/Neutral Postion (PNP) Switch Circuit Engine Torque Signal Circuit
If your vehicle failed a C3148 Marcos Mantis test and the C3148 Check Engine Light is NOT on, chances are you have a problem with the OBDII system, a burned out MIL lamp, or a faulty catalytic converter. The converter is essentially an afterburner that cleans up the exhaust after it exits the engine. The OBDII system uses C3148 a ownstream oxygen sensor to monitor the efficiency of the converter, and it should detect a drop in converter efficiency if the converter has been contaminated or is failing (ignition misfiring, leaky exhaust valves, and oil burning can all damage the converter). What you want to look C3148 DTC For Marcos Mantis: Any conditions that might cause ignition misfire, an overly rich or lean fuel condition, or loss of compression.