Strong fuel smell from exhaust & power hesitation

[Croccifixio13]

Hi All,I have a 325i M50B25. I have been experiencing some serious issues over the past 2 months.It first started with my ECU burning as a result of a leaky valve cover gasket. Oil has seeped in and fried one of my ignition coils. All was replaced and then the engine began stalling. As a result of this, the ICV, AFM & MAF sensor was rep laced in various combinations, but the problem was still not solved.Simultaneously, the car developed a power hesitation problem and that led to me replacing the fuel pump, fuel filter and etc.Further diagnostics led to a faulty knock sensor 2. This was also pulled and replaced. That more or less solved the stalling problem. However, I then started detecting a strong fuel smell from the exhaust. I replaced the O2 sensor, pulled the injectors and replaced them. That has not solved the problem. There is slight power hesitation from stop and my fuel economy is non-existent. RM 50 of fuel gives me about 100km mileage! All the seals, gaskets, etc have been pulled, checked and changed if necessary.My mechanic is saying this could be related to the ECU. I am at wits end! Have spent about 2k plus on all this and the problem is still not solved!Any input/advise would be really helpful right now. I am seriously considering selling the car!Thanks in advance for all the help.

 

[boyburhan]

Pity u bro......if it is me having those issues, car will be abandoned i guess....when selling is not possible

 

[slyder]

Just a question, with all those symptoms and action taken that you have mentioned, was this via OBD scanner? You should be able to see what are the error codes as well as the reading.

 

[kayzhen911]

my heart bleeds for u bro.
change a mechanic.

 

[Croccifixio13]

Just a question, with all those symptoms and action taken that you have mentioned, was this via OBD scanner? You should be able to see what are the error codes as well as the reading.

Hey bro... Yes it is flagging a mass airflow problem.... The error can't seem to be cleared. However given the work done on the air flow system, we find it hard to accept... Sigh... Maybe it is time to let her go... But i'll take the car in for a 2nd opinion first...

 

[ICEMAN 68]

it could even be a rm0.50 cent work ...just need to get a competent foreman to diagnose it ...as you mentioned fuel smell ..could be due to one of the worn out hose connecting the fuel filter or the fuel pump ...get that checked ...

 

[slyder]

Totally agree with iceman. your problem doesnt sound like a serious one. just need to find a proper experience bmw mechanic.

 

[Croccifixio13]

Thx guys... Will get it checked and update.

 

[Russie]

Try starting the engine on a cold morning and look under the undercarriage for petrol leak from the fuel filter. During cold starts, more petrol will be pumped thru the fuel filter and if you see petrol dripping from the hose contact points of the fuel filter, then the solution does not cost u much.