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Help car won't start after installing fuel pump and injectors

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Old Jun 25, 2007 | 05:37 PM
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Help car won't start after installing fuel pump and injectors

Ok I just installed my turbo kit this weekend and it ran fine but after I did my fuel pump and Injectors it wouldn't start. The obvious things are
1. Fuel. I have plenty
2. fuse. none blown
3. No wires that I can see are disconnected

I also reinstalled the old fuel pump and still same thing, it won't start. The only thing i can think of is that it may be vapor locked since I undid the injectors and fuel pump. Any positive help would be nice. Thanks
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Old Jun 25, 2007 | 05:42 PM
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more details... does it crank...? any other important info like that?
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Old Jun 25, 2007 | 06:02 PM
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yes it cranks, battery is fine. It sounds like it is gasping for air but all the lines are attached and all the connections to IC pips and intake are tight.
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Old Jun 25, 2007 | 06:05 PM
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What did you install to control the injectors?
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Old Jun 25, 2007 | 06:08 PM
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nothing, just the stock computer
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Old Jun 25, 2007 | 06:10 PM
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Do you hear the fuel pump running when your cranking it?
Maybe you fouled out your plugs.
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Old Jun 25, 2007 | 06:11 PM
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yes I felt the pump running, just a question but how would i have fouled my plugs.
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Old Jun 25, 2007 | 06:24 PM
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did you install larger injectors??????
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Old Jun 25, 2007 | 06:30 PM
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spark plugs are fine they actually are pretty clean, i just checked them
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Old Jun 25, 2007 | 06:32 PM
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yes I installed 780's. I am pretty sure I don't need an aftermarket computer to run the injectors.
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Old Jun 25, 2007 | 06:35 PM
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lmao... Dude, you need some sort of EM to get the car to run.. duh.
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Old Jun 25, 2007 | 06:38 PM
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I am guessing you don't have a fuel pressure gauge so it
Sounds like what happend when I I started up my fresh motor on my srt-4. After a few tries.. I decided to disconnect the fuel line and i found it to be dry.

long story short , ended up being that i had no fuel pressure as the pump hadn't sucked in any fuel and by priming it still didn't deliver fuel.

THe way I fixed it was by jumping the relay and making the pump run in a loop until fuel finally ran through the pump.

I don't remember if you can do the same on the evo..
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Old Jun 25, 2007 | 06:41 PM
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Originally Posted by Joshs EVO
Ok I just installed my turbo kit this weekend and it ran fine but after I did my fuel pump and Injectors it wouldn't start. The obvious things are
1. Fuel. I have plenty
2. fuse. none blown
3. No wires that I can see are disconnected

I also reinstalled the old fuel pump and still same thing, it won't start. The only thing i can think of is that it may be vapor locked since I undid the injectors and fuel pump. Any positive help would be nice. Thanks
You need a form of Engine management to go with the Injectors. Most likely thats your problem. noobs.
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Old Jun 25, 2007 | 06:43 PM
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Originally Posted by Joshs EVO
yes I felt the pump running, just a question but how would i have fouled my plugs.
Injectors aprox 50% larger providing a good amout of extra fuel @same duty cycle.Most likely over fueling.Try starting with throttle 1/2 open and if engine begins to fire up let off throttle ASAP.it will most likely die out due to running overly rich.
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Old Jun 25, 2007 | 06:51 PM
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Originally Posted by Joshs EVO
yes I installed 780's. I am pretty sure I don't need an aftermarket computer to run the injectors.
Yes, you most certainly DO need something to control the injectors. But your car will still start with the 780s installed....

I would install the old injectors and double check your work... I am going to suggest that the issue is in the fuel pump install though...

Did you transfer the plastic collar from the old pump to the new pump? Did you make sure the rubber boot that goes on the end of the pump outlet was not messed up and seated correctly?
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