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General E46 Forum
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Old 10-28-2012, 09:52 PM   #1
louiecat
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Bent fuel rail

I hope I'm posting this right, I recently helped replace the motor in my 2000 323ci and noticed the fuel rail is bent down slightly near the cabin air filter housing, this is from the new motor was strapped tightly to the wood pallet for shipping, could someone let me know how I can check this out to see if there may be a fuel pressure issue Thanks.
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Old 10-28-2012, 11:49 PM   #2
Stinger9
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If your injectors are all not damaged by this distortion, and there are not leaks at any of the injectors, and the engine runs smoothly, then you're probably good to go.
You could check fuel pressure at the Schrader valve if you want to be thorough.

Did you put a 330 motor in there when you had the chance?
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Old 10-29-2012, 12:13 AM   #3
louiecat
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Thank you for responding, I have'nt got the motor to run yet, another friend of mine helped me try he shot starting fluid into the small hose inlet near the mas and the motor started for a second when I tried to step on the gas it died right away, The motor I bought for the car looks to be the same one we pulled out of the car. I am pretty sure its a 2.5 motor. we also tried pressing the little release valve on the front of the fuel rail near the thermostat and some gas did come out of the valve I dont know how much pressure there is suppose to be. is there a way of checking the fuel pressure at that valve?
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Old 10-29-2012, 09:02 AM   #4
louie586
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Quote:
Originally Posted by louiecat View Post
is there a way of checking the fuel pressure at that valve?
http://www.sears.com/shc/s/p_10153_1...=30-81065041-2
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Old 10-29-2012, 10:21 AM   #5
Stinger9
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Originally Posted by louiecat View Post
we also tried pressing the little release valve on the front of the fuel rail near the thermostat and some gas did come out of the valve I dont know how much pressure there is suppose to be.
Supposed to be in the neighborhood of 40 psi.

Always think about using the spaghetti coder

http://tis.spaghetticoder.org/s/view.pl?1/06/04/54
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Old 11-06-2012, 09:01 AM   #6
louiecat
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Hello Stinger9 I checked the fuel pressure monday and while cranking car the gauge went up to 55 then it would drop down and stick around 35 fr a short time, I still am not able to get car to start. DO you know if there is a plug that controls the fuel injectors we could have overlooked when putting motor in car? it seems like the injectors are not coming on. I greatly appreciate all of your Imput. Bill
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Old 11-06-2012, 01:46 PM   #7
Stinger9
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This is not something I've had any experience with as I've only replaced my fuel injectors.
I know there is a harness bundle from the injectors that must come from down under. I'd only suggest following the bundle down under to see if you can find anything out of order.
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Old 11-06-2012, 01:55 PM   #8
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I would prime the pump and see how long the rail stays pressurized. It's a fair bet that a quickly-dropping pressure means a fuel leak. I would probably replace the rail for peace of mind personally, but it may not be strictly necessary.

Based on your posts, I am guessing that your issue is not directly fuel-related. You can, however, use a noid light to make sure the injectors are getting a proper signal from the DME.
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Old 11-06-2012, 02:20 PM   #9
Stinger9
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Or listen to the injectors with a stethoscope (or screwdrive) to see if they click open.
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