hi guys,
as you all know my car fuel pump was screw and i got it replace under the warranty at the dealer.
after almost 3 weeks i got my car back "fixed" and grease all over the car even in the roof (i dint notice it until i was preaty far away from the dealer).
it was Wednesday when they give it back and the friday i try to start the car and it dint start in the first try, after i realse the starter i hear a blup blup (like something doing bobbles in the back of the car(may be the fuel tank)) and i try again and it start.
after that i have always to wait to the blup blup to start the car and today when i start the car it start to fail a little like it wasnt getting much gas.

you guys think that could be a fuel pump problem???

im preaty angry since haven't pass even a week and i will have to take it back to the dealer and i remember all the grease in the roof that i dont know how to remove

 

sounds like air in the line?
i dunno if thats a stupid suggestion.
I dont know alot about fuel pumps/lines...

 

i was gonna say what an0malous said other than that i have no idea

 

ok guys,
i took the car to the dealer and they told me that i have fuel pump problems again
2 times in 1 week
i have this car for 2 month and it has sleep 1 month in the dealer
im really ****

 

That is really strange... why you would have issues 2x in a row is beyond me. The only reason i can think of is either the pre screen is falling off the pumps or not installed correctly or someone has put something in your gas tank killing pumps, IE- sand or sugars.

 

Well obviously there must be something else going on. Fuel pumps can out last cars when high octane gas and injector/line cleaner is used often enough. That sound you are hearing sounds like something is actually in your gas tank. I would be alarmed and tell the dealer to stop ******* around and replacing fuel pumps as they are famous for replacing injectors and fuel pumps when they don't know and don't care about the problem. They can unlatch the gas tank and drain the lines. Some people like to suck the gas out of the tank first. It depends on whose doing it really. I would have the gas tank replaced. I don't think warranty will cover it if someone put something in your tank.

 

The octane of the gas running through the pump doesn't affect it differently.

 

Exactly what he says, I do believe there is more to teh story here... I too would have them change out the tank and everything else in there. A fuel pump will not die within a few days unless there was something killing it.

 

Higher octane = more refined gas = less particles and molecule buildup on internal fuel parts like fuel filters, lines, injectors, pumps. I doubt there is anything wrong with the fuel pump though.

 

does some one hate you and putting stuff in your gas tank possibly

 

Higher octane fuel is more refined, but all it does is alter the octane rating not the "cleanliness" of the fuel. The fuel pump does not care at all what fuel it runs as long as it's clean. Fuels that make the "Top Tier" rating all have the same standard. I have read where higher octane fuel has cleaning additives that will help clean/prevent carbon build up in the engine and therefore makes the burn cleaner, but that does not have an effect on the gas in it's liquid unburnt form as far as how it affects fuel pumps and lines etc. If you went by this logic then if we ran 100 octane fuel it would be even better for our pumps when that's not true it's just a measurement of it's resistance to combustion.

 

to be honest i dont know anyone that hate me that much

may be can be that they dont like to be out run by a cobalt:P

they said that was something wrong with the pressure when release the starter