New Fuel Pump Install (AEM) - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

RG4L · 10-07-2020, 10:07 PM

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 · 10-07-2020, 11:48 PM

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

FR-S2GT86 · 10-08-2020, 01:55 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, 07:38 AM

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

spcmafia · 10-08-2020, 08:02 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, 09:10 AM

Quote:

Originally Posted by DarkPira7e

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, 12:10 PM

Quote:

Originally Posted by FR-S2GT86

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, 03:41 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, 03:46 PM

Quote:

Originally Posted by MJones_RB

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

10-07-2020, 10:07 PM	#1
RG4L Member Join Date: Jun 2020 Drives: 2013 BRZ Location: North Carolina Posts: 33 Thanks: 16 Thanked 4 Times in 4 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	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??

10-08-2020, 08:02 AM	#5
spcmafia Senior Member Join Date: Jun 2020 Drives: 2018 Subaru BRZ Location: Stonington, Connecticut Posts: 3,281 Thanks: 1,514 Thanked 4,141 Times in 1,986 Posts Mentioned: 24 Post(s) Tagged: 0 Thread(s)	There's a very useful video on Youtube from FTSpeed about installing that same pump. I'd check it out. __________________ “God gave me an okay mind, but a really good ass, which can feel everything in a car.” Nikki Lauda

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10-07-2020, 11:48 PM	#2
DarkPira7e Rust bucket enthusiast Join Date: Feb 2017 Drives: 2013 Turbo Firestorm FRS Location: Vermont Posts: 3,932 Thanks: 3,199 Thanked 4,095 Times in 2,045 Posts Mentioned: 31 Post(s) Tagged: 0 Thread(s)	Pull a line off and see if fuel is actually building pressure

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