Injector Noise

[Seankanzig]

Hello,

Tonight I just took my truck out for a few minutes, to go get a friend (He ran out of gas). When I started it up the injectors were about 2x as loud as normal for about 3 seconds then quieted down to what they normally sound like. Is this just due to it being in the upper forties tonight?

Thank you,
Sean

 

[0966Sy]

Re: Injector Noise

I dont realy dont see how being cold would effect how much noise the injectors would make. But I have seen some fords that the return or feed line on a return type fuel pump system just like ours have had loud injector "ticking" when the lines are rubbing against other engine components. It will amplify the pulsations in the fuel lines. There is a pulsator that many of us remove when adding the walboro pumps. This dampens the pulsations in the lines from the injectors opening and closeing. Although i have noticed that the 50lb delphi's can be loud, oftenly mistaken for valvetrain noise. It can also be caused from the factory lines rubbing on the trans or firewall in combination with removing the pulsator. I've seen a few mustangs with big injectors and pumps and they are running braided -6an to the rails and they are very quite.

 

[ItsMyTy]

Re: Injector Noise

you probably were hearing valvtrain noise and when the oil made it's way up to the lifters and rockers it went away.

 

[Seankanzig]

Re: Injector Noise

thanks, guess nothing to be concerned about