For years and years, the fuel pump was mounted somewhere on the engine and accessible for replacement. What was the bright idea?
2006-11-20 09:53:17 · 10 answers · asked by Gnome 6 in Cars & Transportation ➔ Maintenance & Repairs
the auto makers claim it is for cooling reasons. Also the cars of old days were not fuel injected and the pump didnt neccessarily need to be submergerd in fuel like now. As much as a pain in the but to replace them it is the best thing for a fuel injected car.
2006-11-20 11:16:07 · answer #1 · answered by rwings8215 5 · 1⤊ 0⤋
It helps prevent vapor lock. The fuel would sometimes create bubbles in the line leading from the gas tank to the pump. When this happened the pump would not be able to operate. Having the pump submerged ensured vapor lock would not be a problem.
The Porsche engineers went through this exercise on the 914...
2006-11-20 11:32:23 · answer #2 · answered by Warren914 6 · 1⤊ 0⤋
i don't be attentive to off hand what gasoline presure specifications. are for a ninety pontiac 6000. i think of typicaly its a sprint decrease at around 35 psi idling. besides the undeniable fact that, i does no longer difficulty approximately that precise now as 6 pounds of gasoline presure won't reason as drastic a difficulty your describing. It appears like the gasoline presure regulator is doing it is activity of regulating gasoline presure. the regulator has a vacum line to the perfect of it. while the engine is idling there is aprox. 20 inches of manifold vacum pulling on the diaghram on that gasoline reg. which permits gasoline to pass until now, 40-one psi as you reported to be precise. once you strengthen up manifold vacum decreases to the regulator. with a loss of vacum pulling on the diagphram it takes greater gasoline presure until now gasoline can pass, 40 5 psi as you reported. Its like a mechanical gasoline enrichment every time you strengthen up....anyhow. Alot of situations the diagphram interior the regulator will burst and alow gasoline to pass into the the vacum line which fits on your intake manifold, which reasons the engine to run very prosperous. Pull off the vacum line to the regulator, if gasoline is interior the vacum line the regulator is undesirable. If that's no longer your difficulty deliver me an digital mail and we can communicate approximately another opportunities.
2016-12-10 12:40:45 · answer #3 · answered by ? 4 · 0⤊ 0⤋
Changing a fuel pump in tank is not as hard as dealerships/garages make it seem.If your even slightly mechanically inclined you can do it too.
2006-11-20 14:24:32 · answer #4 · answered by freebird_237 3 · 1⤊ 0⤋
because of the high pressures required in today's fuel systems, it was found that they maintain a more constant pressure if all the have to do is push the fuel rather than siphoning it up then pushing it to the fuel delivery system.
2006-11-20 10:28:49 · answer #5 · answered by mott the hoople 4 · 1⤊ 0⤋
Cooling and priming. I like where they stick them on some F250 diesels, on the frame rail. Still self priming and also easy to change. Don't know if the gas ones are the same.
2006-11-20 09:59:18 · answer #6 · answered by Chris H 6 · 1⤊ 0⤋
High pressure pumps work best when submerged.
2006-11-20 10:01:34 · answer #7 · answered by luckyaz128 6 · 1⤊ 1⤋
cooling and priming is the best reason.
2006-11-20 10:03:43 · answer #8 · answered by Erase Program Read Only Memory 5 · 1⤊ 0⤋
that way they can charge U a Hell of alot more $$$$$$$$
2006-11-20 09:57:14 · answer #9 · answered by Deerslayer 1 · 1⤊ 0⤋
i would think so they dont have to be primed
2006-11-20 09:57:44 · answer #10 · answered by Anonymous · 0⤊ 1⤋