Weird loss of power

[Exorbalrog]

Hello my fellow friends. This is my 1st post here in this community.

Well, here it goes (sorry for my english, im portuguese) :

I recently bought a 2004 mercedes c230 kompressor 192hp with also a GPL system with 128k km. The problem is that sometimes when i use the car i realy feel those 192 hp kicking, but sometimes i dont feel this at all. Its like the car sometimes lost 50+ horse power.

I already changed Oxygen sensor, mass air flow sensor, coils, spark plugs and the "problem" persists. Already tried using for 1 week only the gasoline system, and on another week only the GPL system and the "problem" persists. It seams that the car sometimes is "tired" LOL

Any advices? What might be causing the problem?

Thanks in advance.

CHeers*

 

[Exorbalrog]

anyone?

 

[Tony Dyson]

Hello and welcome.
The first thing anyone should do to help diagnosis is to have the fault codes read so you're not just guessing at the root cause of the problem and spending lots of money replacing expensive parts that don't need replacing!
"GPL" is somewhat confusing as here in the UK it's associated with Software Licensing but I would hazard a guess that as a petrol fuel alternative you mean LNG or LPG, Liquid Natural or Petroleum Gas?

 

[Exorbalrog]

Hello and welcome.
The first thing anyone should do to help diagnosis is to have the fault codes read so you're not just guessing at the root cause of the problem and spending lots of money replacing expensive parts that don't need replacing!
"GPL" is somewhat confusing as here in the UK it's associated with Software Licensing but I would hazard a guess that as a petrol fuel alternative you mean LNG or LPG, Liquid Natural or Petroleum Gas?

Thanks for you quick answer Yes the Gas System. I think i've should said LPG, since in portugal is GPL.
The problem is that, nowadays there's no lights appearing on the panel. I had a engine light up and it was the mixture, allegedly. I changed all the things that i said above but it seams that is exactly the same.

And since yesterday, when i change from the gasoline system to Gas system and i put all the throttle down, the car automatically disables GPL abn goes to gasoline.

My main concern is that even if i only use gasoline system, i notice that loss of power that i mentioned on the post above.