The past 2 days my fuel pump has been acting funny. It is a Walbro 255lph pump. Its starting to whine really loud at idle. It sounds like when you initially turn the key put not all the way its goes "WAAAAAAA" but when i let the car idle it stays like that all the time, that loud and doesnt get quieter. Also when i press on the brake the tone changes. For the past 2 days its been about 90 degrees out. I never let the tank go under 1/4 and i have 1/2 in it now. Ive noticed its been doing it after i go for a long drive about 30mins. Also i can smell gas, i popped the hood and you can smell it heavily on the passenger side of the motor. I checked everything and nothing was wet or leaking. The walbro is only about 9 months old. What could it be, the fuel pump bad? or can a clogged injector do it? The car has 80k miles on it the the pump 7k tops
Took out the car tonight. When i started it up it was very loud again, i went out for about 3 hours. When i came home i couldnt even hear the pump!! Before it was so loud i heard it over the exhaust, now its back to normal. What is wrong with this thing?!?!