Replaced fuel pumps
 

In the spirit of logging work on my car here in the forums for it's future owner ...


Yesterday I finished replacing the fuel pumps, hoses, clamps, and Y-adapter with Carter's machined aluminum version. This was preventative maintenance - no indication of trouble, but as it's a common area of wear and failure I went ahead and preemptively refreshed everything. Also, it was not that difficult and fairly inexpensive. Car has 23.5k miles.



Parts list:
2 x Airtex E3240 fuel pump
2 x Airtex FS1 strainer
1 x Sending unit gasket

1' Gates 27097 3/8" Submersible Fuel Line Hose
1' Gates 27093 5/16" Submersible Fuel Line Hose
2x 3/8" fuel hose clamp
4x 5/16" fuel hose clamp



Upon inspection, it was obvious the pumps had never been removed before. Nevertheless, the fuel tank was clean, the plastic Y-adapter was in good shape and not cracked, and the only sign of trouble was a small tear in one of the pump strainers.


Replacement was straightforward. I simplified the hose routing for the pumps to eliminate bends that were impossible to duplicate - seems like the factory hoses were shaped a specific way but trying to duplicate the bends with a straight hose would cause a little creasing.



Here's the final reassembly:


https://lh3.googleusercontent.com/Au...g=w676-h901-no


[Update 12/11/18] I had to pull the assembly again because fuel pressure was dropping abruptly after the key-on 2 second pump run. I did not clamp the hoses in the assembly tight enough; in fact I used the wrong size clamps on the 5/16" hoses. Corrected and re-tested.

Re: Replaced fuel pumps
 

Good Information with clickable titled links and photo coverage......Thank You Stephen :thumbsup:

In "Solutions" (6th Post) under FUEL DELIVERY.

Re: Replaced fuel pumps
 

I know this an old post but can you tell me where you got the carter aluminum y adapter.
Thanks

Re: Replaced fuel pumps
 

Shoot Carter an email at: ctmachining@gmail.com

He will hook you up.


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Re: Replaced fuel pumps
 

Thanks.

Re: Replaced fuel pumps
 

You’re very welcome!!


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Re: Replaced fuel pumps
 

I just replaced my fuel pumps. I disconnected the battery to do so. Upon re-start everything seems OK but the range indicator shows zero even though there is fuel. Pressing reset on the dash button didn´t help. Any ideas? Thanks black90.

Re: Replaced fuel pumps
 

Just a WAG ... The arm is stuck on something, not swinging up and down.

Re: Replaced fuel pumps
 

Thanks for this. Just finished replicating it for my '91, which has been sitting for almost 10 years - #0637 - 85k miles - original owner. Both pumps were seized solid.

The gasket you list above only has 8 holes. My one has 9. Here's the part info - $15 from local parts store:

Re: Replaced fuel pumps
 

UPDATE: Checked the fuel pump pressure - static test, ignition off, jumping 12 volts to the fuel pump wire in the engine compartment - 48 psi. At idle it drops to 36 psi. I put a new filter in when I changed the pumps so unless it's possible to put it in the wrong way it shouldn't be that. Car runs fine and seems to be generating plenty of power. Secondaries working too - lots of additional power. Maybe my gauge is out of calibration but these pressures seem way low compared to numbers I've been seeing here. I need to get an extension for the gauge to do a driving test.

I also have a high idle problem so going to find that vacuum leak - probably after Thanksgiving 'though. No time right now.