"Mechanics" are superstitious housewives. They would know more if they could forget half of what they "know".
Another electric car almost out of power.
- Thread starter Chris142
- Start date
Fuel runs through the pump motor over the rotor and brushes. Any cooling on the outside has to be conducted through the fuel inside the pump. If fuel boils in the pump then there will be other issues.
If the pump is pumping fuel sufficient to keep the engine running then the pump is sufficiently cooled.
Having said that a friend who religiously kept fuel above 1/4 tank (at first) for 450,000 miles in a 1990-ish Toyota 4WD pickup had to replace fuel pump every 110,000 miles like clockwork. Then he started running it down to the idiot light and had to replace the fuel pump every 110,000 miles. Had a 100 mile/day commute. The weak fuel pump was a known defect of his model year. 3.0L V6.
All the 1980-1990s Toyotas had lousy fuel pumps. Nothing banging on the tank wouldn’t fix!
Mine just lives on to spite me then, I run every tank down until every alarm starts going. Unless I'm on a trip, then I fuel up at the first warning. (about 1/8th remaining).
Never ever had a failed pump.
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There is a thing called AAA. Use it if you want to hyper mile your range in an EV.
Tow it up hill if you don't want to pay for the electricity and time to charge up hill. The uphill climb is free energy that you can use to charge the car back slowly when you go down.
Tow it up hill if you don't want to pay for the electricity and time to charge up hill. The uphill climb is free energy that you can use to charge the car back slowly when you go down.
That is a 66. I had a 65 Riv GS with the 425 Super Wildcat nail head 2 x 4bbl. When I owned them they were just old cars that I got from the local dealers back lot for wholesale and fixed them up pretty good, today they are worth good money.
Please don't tell anyone I sold my 66 GTO to a local wrecker for $50 after I blew the 389. Midnight Blue post car. Sheesh. Who knew?
If we could only go back in time and know what we know today.
OVERKILL
$100 Site Donor 2021
I don't think anyone is suggesting the fuel in the pump is boiling, simply that different systems (return vs returnless for example) and pump locations (at the bottom, vs suspended) will affect the operating temperature of the pump, which in turn can have an impact on its lifespan. The body of the pump also conducts heat into the fuel, so in the case of a pump that can be mostly or completely out of the fuel, that status is going to impact its operating temperature.
You made the following statement:
GrumpyCat said:
Which is factually incorrect, so I struggle with the idea that you are an authority on this subject.
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What harm comes of an electric motor operating below the boiling point of gasoline?
The fuel pump is submerged inside that can.
My friend's commute had a couple hills. He said he knew a month or two in advance he had to replace the fuel pump when his truck didn't have it's usual power on those hills. Or when he was towing his bass boat with 210 HP outboard.
Fuel pump replacement wasn't easy as the tank had to come out.
OVERKILL
$100 Site Donor 2021
I think some of them were just poorly designed and had a tendency to fail when operating at higher temperatures, like the aforementioned GM examples. Kind of like the Ford TFI modules, they had a much higher rate of failure when affixed to the distributor as a heatsink (so running around 190F) than when still in the engine bay, but moved adjacent to the engine and affixed to a heatsink. It's not a huge change in operating temperature, but it was significant enough to affect the life of the component.
What can? If you are referring to the picture I shared, it's a rubber sleeve the pump slides into. How many fuel pumps have you actually removed or installed? Because in every case in my experience, there's a considerable amount of fuel available for the pump to move when the body of the pump is no longer submerged, contrary to your claim.
And there is a significant amount of fuel in the fuel pump at any time there is enough fuel to keep the engine running. No matter where the fuel pump is located, inside the tank, high inside the tank, or outside.
OVERKILL
$100 Site Donor 2021
Sure, but that wasn't your assertion.
My 2023 F-150 has a 36 gallon tank. That's a lot of range at 24 mpg highway.
Oh I remember filling that tank. My 5.0 got 21mpg. I’ll stick with my EV.
Curious what the config is but impressive potential if full, and run down to the last drop.
Realistically it's likely in a variable state of depletion through any given week between fill ups with less actual range vs potential range.
At some point an ice car in the driveway that being driven all week will most likely have less range than an EV that gets a charge every night.
"Honey Im going to take your car today"
Her Car.
Exactly. Peak numbers are like peak HP; it only counts at limited RPM which most drivers will rarely, if ever, see.
A flat torque curve is far more useful especially in a daily driven vehicle.
..and boats.
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