Hi has anyone got a how to guide on removing the fuel pump? I have searched the web but has far to many junk sites. I want to test it to see if the fuel is pumping through.
Cheers
James

 

https://www.rx7club.com/showthread.p...ump+%2Binstall

 

This has saved me so much time, thank you

 

You're welcome

 

Is there a way i can remove and check to see if it is working properly because i believe that this could be one reason to my engine not starting. put it this way you cant hear the fuel pump turn on when ignition is on

 

Also i want to replace it anyway, but i dnt want to spend loads of money but i do want a decent one. Which one would u recommend.
All help is appreciated

 

walbro or supra pump, walbro is cheaper. i dont have experience with it, i have the supra pump rewired.

 

I would suggest a fuel pressure tester. You don't have to remove the pump just tap into the line crank the car and see if you get pressure. Easy way to see it it works.
Walbro is cheaper but a bit nosier then the supra pump. Both are good pumps and have been backed on the forum many times.

 

^^ That is easier.

If the radio is off, you can hear the pump cycle when you turn the acc key on. Next I would make sure the fuel filter has been replaced recently, if it is plugged you will get no/little pressure at the injector. Then I would remove the pump and make sure the fitting/line on the top of the pump is not broken and just pumping fuel back into the tank.

Personally I recommend the supra pump. If you go the less expensive route and pick up a walbro, purchase it from a reputable dealer to get an authentic walbro and not a cheap copy that is notorious for failing.

ALSO, below is a link the the FD factory service manual (FSM) it will help you with this as well as most any other question on removing factory parts, troubleshooting, etc...

 

Thank you all for your efforts, would i be right in saying replacing the fuel pump will add a little more reliability to the vehicle itself as i heard some parts will help reliability? With the supra one is it a straight swap? Toyota supra one.


Cheers

 

If i turn the ignition on the car is silent, nothing from the fuel pump even when ear is next to it,

 

try jumping F/P terminal in the diagnostic box to the GND terminal to see if it priming. If not then you pump is mostly dead or no power supply to it.

-AzEKnightz

 

Ok i put my head next to fuel tank whilst ignition turned on and didnt hear any noises from the fuel pump, i tested the connection on top before pulling the pump out with a volt meter which said 12volts coming through, I then removed the probe and took of the fuel pump, connected the fuel pump straight too a battery which worked. I dont understand this, Any advice?
Cheers

 

There are 2 possibilities I see the way you've done your diagnostics.

1: The fuel was somewhat seized up and the factory fuel pump harness having extra resistance in there not able to turn the pump over efficiently, therefore the fuel pump can be or becoming bad.

2: the fuel pump relay is not seeing an "ignition" signal from the ignition switch or somewhere along the line causing it not to ground over the fuel pump circuit therefore you couldnt hear any pumping activities.

That's why I've suggested to jump the F/P to the GND circuit at the left front of the diagnostic box under the hood, that way you will know for sure if the pump was bad because that actually turn on your fuel pump at full speed and not just priming.

But my guess would be that your fuel pump is no good. That's when sometime you see people grab a mallet and have somebody crank the car while they wreck the bottom of the fuel tank to "unseize" the fuel pump.

-AzEKnightz

 

***UPDATE****

Tonight i put the old fuel pump back in and connected the f/p to gnd on the diagnostic box. Could hear the fuel pump ticking away, seemed slightly tempremental as sometimes i could hear it clicking away and sometimes when i connected it you couldnt hear anything, dunno whether that would be because it had primed? At no stage could i hear or feel vibrations when ignition was on or trying to start the car so to me it seemed as though their is some issue between turning the ignition on to the fuel pump. I have ordered a fuel filter which will be replaced anyway when that arrives, havent checked the old one yet tho. I need to add that the original battery had died when i bought it so i am using a 44amp battery from my A3 which is a lower amp then the one i had.
I read somewhere that you can feed fuel into the engine with a syringe but i cant find where i read that or what pipe it goes into.
Any advice or help in this matter is really appreciated.

 

If that's what it is, I suggest getting a new pump. That pump you have is definitely been seizing up and you "freed" it when you connect external power to it.

Get a Supra replacement or OEM or even Walbro should do. Good luck.

-AzEKnightz

 

Make sure you have a fully charged battery, otherwise even if the pump is doing what it is supposed to but without the proper voltage, the pump might not be working properly.

-AzEKnightz

 

Thank you for your help buddy, and everyone else. im trying to work out where you can buy one of these supra pumps, will have to be on the internet as i live in the UK?
This is a bit of a stupid question but when you say supra pump your meaning a pump from a toyota supra? Hahah
bit new to rx7's

Cheers

 

When i tried the wire jump in the diagnostic box i accidently put it in the wrong one to start with and it sparked, the only obvious thing it did was when the ignition is turned on the HEAT light would stay on but after putting it in the wrong connection the HEAT light isnt on. Have i damaged something?

 

probably just a blown fuse.

 

Now to find the fuse lol

 

http://www.rx7store.net/category_s/91.htm is just one place to get it. It is the nippondesno pump. And yes, it is an OEM toyota supra fuel pump. U may be able to just use the part number and source it more locally to you.

When installing it one bit of advice. The fuel output that connects the pump to the hardline on the assembly is a plastic clip. Replace it with two clamps and a piece of FUEL INJECTION hose. It is a more reliable connection.

 

Hi any other tips on how to fit one, i bought a walbro gss342 with installation kit which includes
Rubber Protection Sock

1 x Fuel Filter / Strainer

1 x Piece of Fuel Hose

1 x Wire Harness

2 x Hose Clips / Clamps

1 x Rubber End Cap

This is the link to one i bought

http://cgi.ebay.co.uk/WALBRO-255-FUE...66910369605133

I just need help on fitting.

Cheers

 

I have replaced the fuel filter, and replaced the fuel pump. I am still not hearing the fuel pump when i turn the ignition on. although i can however hear it when i jump the leads in the diagnostic box as it is ticking away nicely, Any suggestions on why i cant hear it when the ignition is on?

Cheers

 

Fuel pump relay?