No start after injector swap

[Roushblown5.0]

Hello,

Had a procharger on my car and removed it last week. Was running ID1050 injectors. Removed the kit and turned the car on and it ran fine.

I then pulled out the ID1050s and put stock injectors back in and now the car won’t start. Cranks but won’t fire up. Waiting for a new tune to come in for stock injectors buy im Assuming the car should at least start with the current tune, correct? Or do I need a tune for stock injectors at least to turn it on? Would like to move the car while I wait for the tune to come in. Thx.

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[daSNAK3]

Your tune is probably way off now, with removing the blower and changing injectors.. I'd def wait for the new tune.

 

[LOL WUT]

Your tune is probably way off now, with removing the blower and changing injectors.. I'd def wait for the new tune.

Agreed, the car is expecting far different from what it has in it right now.

 

[HKusp]

Don't run it until it's tuned. That being said, did you bleed the fuel system by pulling the fuse for the fuel pump and running it until it died? If so, did you re-install the fuse for the fuel pump?

 

[MKL_DS]

The stock PI injectors are tiny. Going from them to 1050s is a huge change in flow rate and requires a bunch of changes to the calibration to make them work right.

 

[illadvised]

Did you try the stock original tune? You are on a stock car with no blower currently?

 

[Roushblown5.0]

Thanks everyone, new tune came in and car fired right up...car wouldn't even start with the stock injectors and tune for larger injectors.

 

[WildHorse]

car wouldn't even start with the stock injectors and tune for larger injectors.

that's because the 1050 inject a shitton of fuel, so it's tuned way down for idle/startup (way way way less fuel). No when you put that stock injectors in, you can imagine the fuel delivered through the injector would be next to nothing. Hence it not starting.

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