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-   -   New Fuel Pump Install (AEM) (https://www.ft86club.com/forums/showthread.php?t=142691)

RG4L 10-07-2020 11:07 PM

New Fuel Pump Install (AEM)
 
Hey guys! Im trying to get second opinions on this... i just installed my new AEM fuel pump but my car wont start... I clearly hear the pump starting, all the fuses are good and i know its giving spark cause It turned on before putting the pump... So basically its not getting fuel but the pump is actually turning on... Any thoughts??

DarkPira7e 10-08-2020 12:48 AM

Pull a line off and see if fuel is actually building pressure

FR-S2GT86 10-08-2020 02:55 AM

I just installed my new DW pump last week. I'm sure the procedure for yours will be similar.

Did you make sure to get the pump discharge properly seated using the O-ring(s) provided? I know the Deatchwerks pump included three O-rings in the kit along with some Superlube to lube the O-rings up with prior to inserting the new pump into the pump housing, but I actually used just one of them with the OEM spacer. If your pump discharge is not properly inserted into the housing you'll never build up the proper pressure you need.

Also, did you prime the fuel lines by turning the key (or press the button without trying to start the engine) on and off several times to eliminate any air in the lines?

Final question: Do you have enough fuel in your tank?

Grady 10-08-2020 08:38 AM

Remove fuel pump, double check your installation. Let us know what you find.

spcmafia 10-08-2020 09:02 AM

There's a very useful video on Youtube from FTSpeed about installing that same pump. I'd check it out.

RG4L 10-08-2020 10:10 AM

Quote:

Originally Posted by DarkPira7e (Post 3374015)
Pull a line off and see if fuel is actually building pressure

My ecutek reads pressure about 4 mpa. Idk if thats enough

RG4L 10-08-2020 01:10 PM

Quote:

Originally Posted by FR-S2GT86 (Post 3374055)
I just installed my new DW pump last week. I'm sure the procedure for yours will be similar.

Did you make sure to get the pump discharge properly seated using the O-ring(s) provided? I know the Deatchwerks pump included three O-rings in the kit along with some Superlube to lube the O-rings up with prior to inserting the new pump into the pump housing, but I actually used just one of them with the OEM spacer. If your pump discharge is not properly inserted into the housing you'll never build up the proper pressure you need.

Also, did you prime the fuel lines by turning the key (or press the button without trying to start the engine) on and off several times to eliminate any air in the lines?

Final question: Do you have enough fuel in your tank?

So I took it apart and I placed the AEM fuel filter which is longer than the stock one so when the springs from the case compress as you put it in the tank they push the pump down and im thinking that pressure thats applied its making the filter go all the way down to the point where there's no gap between the filter so the fuel cant get in but idk

MJones_RB 10-08-2020 04:41 PM

Don't all pumps work the same? You have to prime them first before they can operate? I remember there was a priming procedure of holding the gas pedal down to the floor and trying to start it. The engine won't start but the fuel will flow to the pump.

RG4L 10-08-2020 04:46 PM

Quote:

Originally Posted by MJones_RB (Post 3374225)
Don't all pumps work the same? You have to prime them first before they can operate? I remember there was a priming procedure of holding the gas pedal down to the floor and trying to start it. The engine won't start but the fuel will flow to the pump.

Oh I followed ft86 video but didn't prime it


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