My Mini Pajero does not accelerate in winter even when I give full throttle. Someone said it's an issue with leaked head (and showed me a dent on the engine). I replaced 660cc engine with 1100cc along with 'lacchay' ). But in winter even 1100 cc engine does not pick. Keeps going on 20km per hour with full accelerator. When it picks some speed then there is a turn, speed breaker or signal and I am back to 20km per hour for next couple of minutes. Some mechanic did something with computer setting and it improved for some time but now back to the same state. I always use 'L' gear to start from zero instead of 'D'. Due to the same reason I put right foot on accelerator and left on break . Can an expert just let me know what can be the REAL issue and what needs to be looked at. Thank you.
sir mention your location please
Please share the scan tool data and error codes.