fuel pump

dr50376272 · 11-11-2010, 03:15 AM

my engine wont start. i wonder, i hear no sound from the fuel pump. do you think there should always be a sound from the oil pump? im 100% sure in all my other rotaries there was a sound. its an rx4 auto 12a twin dizzy coupe, pump is original. please do reply either here or dr50376272@gmail.com

thanks

david

rxspeed7 · 11-11-2010, 07:46 PM

Wait so your fuel pump doesn't turn on? Or your oil pump quit? If its the fuel pump, first check all wiring and fuses, if all that checks out fine then your pump probably failed.

Zack.

My5ABaby · 11-12-2010, 09:12 AM

It seems this isn't a 2nd gen, but in mine I can't hear the pump unless the car is off and I jumper it to run. Stock pumps are pretty quiet.

sen2two · 11-12-2010, 12:31 PM

Quote:

Originally Posted by dr50376272

my engine wont start. i wonder, i hear no sound from the fuel pump. do you think there should always be a sound from the oil pump? im 100% sure in all my other rotaries there was a sound. its an rx4 auto 12a twin dizzy coupe, pump is original. please do reply either here or dr50376272@gmail.com

thanks

david

Oil pump or fuel pump?

Like it was already stated, stock fuel pumps can be very quiet. Especially if you have an in tank pump and the tank is full. I think Rx4's had an external pump though.

Either way, if you want to do it by ear, crawl undermeath the car and listen for the pump. Or pull a fuel line and place it into a container so it will not spill. Turn the key on and see if fuel flows out.

dr50376272 · 11-12-2010, 09:41 PM

i have a stupid dumb question. if there no fuel in my fuel tank, will the fuel pump run? mine coughs and splatters when there is no fuel in the tank, but when i took it out and ran a 12v source through it, it continually ran. also, rx4 mazda, where is the fuel tank fuse? thanks !

11-11-2010, 03:15 AM	#1
dr50376272 Rotary Fan in Training Join Date: Oct 2010 iTrader: (0) Posts: 80 Rep Power: 15	fuel pump my engine wont start. i wonder, i hear no sound from the fuel pump. do you think there should always be a sound from the oil pump? im 100% sure in all my other rotaries there was a sound. its an rx4 auto 12a twin dizzy coupe, pump is original. please do reply either here or dr50376272@gmail.com thanks david

11-12-2010, 09:12 AM	#3
My5ABaby Sigh..... Join Date: Feb 2008 Location: Murfreesboro, TN iTrader: (6) Posts: 2,377 Rep Power: 19	It seems this isn't a 2nd gen, but in mine I can't hear the pump unless the car is off and I jumper it to run. Stock pumps are pretty quiet. __________________ 1986 Sport: 132k miles, 5A (Sapphire Blue Metallic), Tokico Blues, Racing Beat Springs, Custom LED tailights (only S4 LED tails in the world), SSR Mark II, Racing Beat exhaust, S5 black interior, Rotary Resurrection rebuild at 120k miles Community Service Manual RotorWiki "Imagination costs nothing; we could build square locomotives or fly to Mars" - Felix Wankel Yesterday is history, tomorrow is a mystery, but today is a gift. That is why it is called the "present."

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11-12-2010, 09:41 PM	#5
dr50376272 Rotary Fan in Training Join Date: Oct 2010 iTrader: (0) Posts: 80 Rep Power: 15	i have a stupid dumb question. if there no fuel in my fuel tank, will the fuel pump run? mine coughs and splatters when there is no fuel in the tank, but when i took it out and ran a 12v source through it, it continually ran. also, rx4 mazda, where is the fuel tank fuse? thanks !