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For you niggas used to working on gas vehicles (I have really only ever had diesels)
- ✙ dcc :pedomustdie: :phear_slackware: likes this.
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@tyler then it's probably just vacuum feedback. You have a return line that runs back through the sending unit on the top of the tank. If you're not accelerating your overflow will pump back in through vacuum pressure. That's probably all you're hearing I wouldn't worry about it
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@tyler Pro tip, if you're having trouble starting it right away , turn the key forward without starting it all the way and then turn it off then turn it back on again then turn it off and then start
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With key only, no start, it runs at a lower frequency, but it's the same sound until the fuel pressure switch shuts it off. It starts fast, no problems with power either. It's just loud when running.
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@tyler you're looking at multiple different scenarios based on just the sound alone. It could be the voltage , it could be the vacuum , and it could obviously be the pump. The way to tell the easiest is to sit and complete silence. I mean midnight in the country complete silence . Turn your radio off and have your door shut with your window down. Reach in and just turn the key forward without actually starting it while you're standing outside of the vehicle. You should hear it click on and start pushing . As long as it's doing that you're good to go . If you have to crank on it for a while to start or you don't hear it immediately kick on then it's going out
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That's not it then.
I wouldn't worry about it unless you're having hardstart/nostart or your fuel pressure is low at the rail.
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@tiddlywinkler @tyler Fuel filter is probably a good idea if it's older than 10 years / 100k miles, no?
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I've had them make a noise like that and last a long time.
The pump is supposed to be submerged in the gasoline for cooling. Is the tank low? They're definitely noisier if they are sitting out of the fuel.
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Tank is full but the fuel is cold
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Fuel filters these days actually last a lot longer than that unless something unsavory has happened.
My Supra's fuel filter is in a really difficult place to reach. People curse Toyota for where they put it, but the engineers put it there because they were trying to keep people from wasting money on fuel filters. They consider it a life-of-the-vehicle filter from the factory. I think Toyota went back to putting it in an accessible place later after all the negative feedback. They decided it was better to let people swap out the filter for ten bucks than think the engineers were dumb.
If you contaminate the gas tank with something, the filter will still clog, though. That's its job, after all. And if you really want to swap it out, it's not going to hurt much of anything if it turns out that the filter wasn't the problem.