Crank no start

1997 MERCEDES BENZ E420
120,000 MILES • 4.2L • V8 • 2WD • AUTOMATIC
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Starter went out and change out starter. Found issue with fuel regulator, replaced now crank no start. Not getting fuel.
Nov 11, 2018 at 2:30 PM
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JACOBANDNICKOLAS
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Hi and welcome to 2CarPros.com.

Since the no fuel issue happened after replacement of the regulator, I need you to recheck your work. Something is causing the issue whether it be a missing o-ring, assembly incorrect. I attached an exploded picture of the component. Take a look at it and confirm everything was reinstalled correctly. If it is dropping the pressure too low, it will not start. Pay attention to make sure the fuel pump is turning on.

Let me know what you find.

Take care,

Joe
Nov 11, 2018 at 4:15 PM
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Had to get another tube for vacuum could that be the problem due being not the same shape?
Nov 11, 2018 at 4:50 PM
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JACOBANDNICKOLAS
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Welcome back.

If there is a leak because of design, it could be the problem.
Nov 11, 2018 at 8:14 PM
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Could there be a issue with plugs or injectors? As mentioned car had been sitting for a while.
Nov 14, 2018 at 2:47 PM
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JACOBANDNICKOLAS
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Hi again,

Yes, anything can be possible. Here is a little trick. See if the engine starts for a couple seconds using starting fluid. If it does, then it is a fuel related issue. If it does not at least try to start, then there is a good chance it is ignition related. As far as the injectors, most certainly they can prevent the engine from running. However, all of them to fail at the same time would be odd.

If you want, here is a link that shows how to check injectors. Take a look through it and see if it is something you feel comfortable doing.

https://www.2carpros.com/articles/how-to-test-a-fuel-injector

Also, here is a link that shows how to check for spark to the plugs:

https://www.2carpros.com/articles/how-to-test-an-ignition-system


Let me know.

Joe
Nov 14, 2018 at 6:48 PM