part not discovers (lacking engine power)

[Teyrar]

hey i just had a car in lacking engine power i ran all test with compression tool path test and test drive couldnt find part so i stripped entire engine down replaced all piston and rings as 3/8 was faulty and i read that some pistons might not show as faulty onf orum so for safety i replaced all

i replaced fuel pump filter oil filter air filter fuel rails spark plugs ignition coils still the part was not discovered or ticked i literally too the entire engine out of car and put it back piece by piece and never discovered this part

any idea?

i took every thing from car and placed back minus body work and drive wheels / suspension and it said lacking power not handling i figured air filter but i replaced filter and got nothing after rebuilding entire car

[JohnnyJiuJitsu]

I had this problem and it was the fuel pump.

[XoLeRick]

For me it was ECU Type A

[Mardoin69]

Originally posted by XoLeRick:

For me it was ECU Type A

Wrong game I think? You maybe referring to CMS 2021. There's no 'ECU Type A' in CMS 2018.

[Cmsffemt]

Know this is really old thread but the things I replaced for this was fuel rail 4 coils and as someone stated the air filter base (thanks to whoever said that caused me to check and it was the final issue)