General Fiat Stilo ABARTH great loss of power

[m lukanoff]

Hi all...My problem as the topic says is a power loss.First to say is that i`ve changed the spark plugs with new ones NGK,Coils,New lambda sensor....the result was that the car was never been so fast,great power:slayer: but for a week now all the power has gone.Diagnostic shows no error codes Please help!!!Where to look???

 

[XB23]

Maf?

 

[m lukanoff]

cleaned the MAF about month ago .But it turn out it was loose air filer hose(i'm with cone k&n) My car is fine now Thank you for replaying

 

[m lukanoff]

Power loss is back Don't have a clue what's wrong this time... Maybe crankcase vent. or something? I hear sucking noise from crankcase breather hose,the one just after the throttle valve is it normal?The other thing is that on the dashboard display the gauge for oil pressure drops 1 bar when the car gets hot and 2bars when the car is really hot!The temp. of the oil is 2or 3 bars when i drive the car more then 30mins.No faults on MES

 

[Maigretnz]

2 issues here. While not showing errors you can use MES to track engine parameters while driving to diagnose faults. With my older cars it is done by listening and hearing something not quite right. I have just pulled the gearbox of my Landrover apart as it's noise changed (there is usually a lot of noise from it anyway) and found a broken thrust washer.

Oil. Not unusual for oil pressure to drop a little at idle when the oil is hot. What oil are you using. Use the recommended full synthetic 10/60. I use Castrol edge 10/60
I assume by 2/3 bars it is half way around the gauge. (normal) The pressure gauge should be at max or only drop a little when hot.

 

[m lukanoff]

I use the same (Castrol 10w60) oil.It drops max of 2bars when the car is really hot.Done the throttle relearn process yesterday but to no effect If the gauge should be at max all the time then i really have problem with loosing pressure. Could that be the reason for the power loss?

 

[Maigretnz]

Check oil level on level ground. Keep it topped up.
Lack of oil will cause serious engine damage not just a lack of power so if the engine still goes I would say oil is not the issue. A hot engine could be a tuning issue.
Try a tuning specialist rather than a regular garage.

 

[m lukanoff]

Just yesterday i put a 1l of oil in it but nothing seems to be different maybe a little more power after 3000rmp.Just to be sure the oil level must be between the max and min or to the max of the dipstick?