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Car doesnt start after fuel pump install


Subru

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So I have just installed an AEM 340lph fuel pump on my V7 Sti (for future power mods and also same pump as I used on my last V7). I loosely fitted it back and tested it but now the car cranks but doesnt start. I tried priming it 3 or 4 times before cranking but no luck. I took it out and inspected after I first attempted to start the car and noticed that no fuel (or hardly any) leaked out the lines (so it didnt pump any I assume)

The fuel pump primes but the pump noise doesn't change pitch which tells me its not filling up the lines.

The lines dont seem to be pinched, used original fuel sock (which looks pretty black but has worked fine previously), has 1/4 a tank of fuel.

Im confused as to what it could be, any help would be great.

The only thing I can think of is that somehow its struggling to pump the fuel up the lines for the first time.

 

I noticed it came with a DW200 already.

 

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Check that it is in fact wired the right way round. I did the same with my first one so it ran backwards, sounded fine but never actually builds line pressure enough to start. I almost felt like the pump was internally wired backwards compared to the factory one as I had double checked all my wiring before starting it.

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13 minutes ago, Andy_Mac said:

Check that it is in fact wired the right way round. I did the same with my first one so it ran backwards, sounded fine but never actually builds line pressure enough to start. I almost felt like the pump was internally wired backwards compared to the factory one as I had double checked all my wiring before starting it.

The DW200 appears to have exact the same wiring as the AEM. I can see + and - on the bottom of the DW200 and its the same orientation shown in the instructions for the AEM so Im sure the wiring is correct. Ill have a physical look tomorrow tho.

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12 minutes ago, Subru said:

The DW200 appears to have exact the same wiring as the AEM. I can see + and - on the bottom of the DW200 and its the same orientation shown in the instructions for the AEM so Im sure the wiring is correct. Ill have a physical look tomorrow tho.

 

I'd confirm it the other way round anyway. Short of leaving an o-ring out there isn't any other reason for it to not work other than it being faulty. 

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1 minute ago, Andy_Mac said:

 

I'd confirm it the other way round anyway. Short of leaving an o-ring out there isn't any other reason for it to not work other than it being faulty. 

ok ill switch it around and give it a go.

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