Author Topic: Can a M42 motor come out of time?  (Read 23521 times)

rallyegolf

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Can a M42 motor come out of time?
« Reply #75 on: January 31, 2009, 01:42:25 PM »
Good fuel pressure through the whole system. This sucks ass. I am not wondering is my crank sensor is bad, but for some reason the ohms test is coming up okay. Anyone ever have a bad sensor but didn't know until you replaced it.  Does this sound right?

strad

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Can a M42 motor come out of time?
« Reply #76 on: January 31, 2009, 03:00:02 PM »
Quote from: rallyegolf;65677
Good fuel pressure through the whole system. This sucks ass. I am not wondering is my crank sensor is bad, but for some reason the ohms test is coming up okay. Anyone ever have a bad sensor but didn't know until you replaced it.  Does this sound right?


My understanding is that a complete diagnostic of the crank sensor requires the use of an oscilloscope so that you can see the wave.
1997 328is, 123k miles, Cosmos Schwartz Metallic
1992 325ic, 163k miles, Lagunengruen Metallic
1991 318i, 210k miles, Brillantrot (sold)
1991 535i, 138k miles, Calypsorot Metallic

rallyegolf

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Can a M42 motor come out of time?
« Reply #77 on: January 31, 2009, 03:23:29 PM »
Quote from: strad;65687
My understanding is that a complete diagnostic of the crank sensor requires the use of an oscilloscope so that you can see the wave.


Well I dont have an Octopus Scope "hahaha" so AutohauseAZ.com just got $112.00 from me. I hope this works.....

KenC

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Can a M42 motor come out of time?
« Reply #78 on: January 31, 2009, 07:52:12 PM »
did you ever end up buying the pressure regulator?  $112 for the CPS?  Damn.. I would have searched for a used one...

rallyegolf

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Can a M42 motor come out of time?
« Reply #79 on: February 02, 2009, 10:34:21 AM »
Quote from: KenCopperwheat;65703
did you ever end up buying the pressure regulator?  $112 for the CPS?  Damn.. I would have searched for a used one...


Yeah, I have a new pressure regulator, but I have not installed it yet. Im hoping the CPS will fix it and I will return the FPR. That way I can get my $70 back. Also, I dont have time to wait to find a used one that may or may not work once I get it. I really need to get this car on the road so I can sell it. I love the car, but I need a pickup truck pretty bad.

rallyegolf

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Can a M42 motor come out of time?
« Reply #80 on: February 08, 2009, 03:53:25 PM »
Well the FPR did not fix the problem and neither did the Crank Sensor. I even replaced the ECU to no avail. I once again checked the fuel pressure and it is pumping. Im lost. Anyone want to buy a non running 318is for cheap?


rallyegolf

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Can a M42 motor come out of time?
« Reply #81 on: February 09, 2009, 05:12:33 PM »
Question....
under the hood, the line that the fuel run to the rail is a brass line and the return "top" is a black line correct? If I disconnect the return line and run the fuel pump, I should have gas flow out of that line correct?

thanks

B318M42W

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Can a M42 motor come out of time?
« Reply #82 on: February 09, 2009, 07:05:59 PM »
yeah you should. here's a page from the bently manual.
[SIGPIC][/SIGPIC]
M90 Blown M42 :cool:

rallyegolf

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Can a M42 motor come out of time?
« Reply #83 on: February 09, 2009, 09:16:50 PM »
thanks That helps. My fuel pressure gauge tester reads in PSIG. from 0-10. how do I convert that to PSI?

peerless

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Can a M42 motor come out of time?
« Reply #84 on: February 09, 2009, 10:34:24 PM »
Quote from: rallyegolf;66223
thanks That helps. My fuel pressure gauge tester reads in PSIG. from 0-10. how do I convert that to PSI?

Quote
Psi is often used incorrectly instead of psig.
http://en.wikipedia.org/wiki/Pounds_per_square_inch#cite_note-0

Psig stands for 'pounds per square inch gauge'.

You need 0-100 PSIg

Surprised you haven't blown the 0-10psi gauge up, lol

If you not maxxing out the 0-10psi gauge then you obviously have a failed fuel pump.

Also 2 items of curiosity,
1) is the same gauge you said read in bar and where showing 4-5bar which would now equate to 4-5psi? (dead fuel pump)
2) I notice a CA license plate, did you email me today regarding this E30?

If it was you, instead of towing the car to my place, how about I drive over to you and hook up the proper fuel pressure gauge to verify the fuel pressure? (405 and the 5?)
« Last Edit: February 09, 2009, 10:40:47 PM by peerless »
Robert


www.e30motorwerks.com
(714) 398-8405

peerless

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Can a M42 motor come out of time?
« Reply #85 on: February 09, 2009, 11:09:55 PM »
Quote from: rallyegolf;66153
anyone want to buy a non running 318is for cheap?


$1,500? Seriously, let me know. Any body damage?
« Last Edit: February 09, 2009, 11:22:24 PM by peerless »
Robert


www.e30motorwerks.com
(714) 398-8405

rallyegolf

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Can a M42 motor come out of time?
« Reply #86 on: February 10, 2009, 09:34:14 AM »
Quote from: peerless;66227
http://en.wikipedia.org/wiki/Pounds_per_square_inch#cite_note-0

Psig stands for 'pounds per square inch gauge'.

You need 0-100 PSIg

Surprised you haven't blown the 0-10psi gauge up, lol

If you not maxxing out the 0-10psi gauge then you obviously have a failed fuel pump.

Also 2 items of curiosity,
1) is the same gauge you said read in bar and where showing 4-5bar which would now equate to 4-5psi? (dead fuel pump)
2) I notice a CA license plate, did you email me today regarding this E30?

If it was you, instead of towing the car to my place, how about I drive over to you and hook up the proper fuel pressure gauge to verify the fuel pressure? (405 and the 5?)

Thats me. If you can come to my place and help me out, that will be perfect.

Parker
« Last Edit: February 10, 2009, 11:10:42 AM by rallyegolf »

colin86325

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Can a M42 motor come out of time?
« Reply #87 on: February 10, 2009, 09:48:49 AM »
Let me know if you want to sell it.

rallyegolf

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Can a M42 motor come out of time?
« Reply #88 on: February 19, 2009, 08:23:40 PM »
Fuel pump pushes 40 lbs constantly from the pump and all the way to the fuel rail. Im super bummed. I cant seem to find out what is wrong with this motor.

arumman

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Can a M42 motor come out of time?
« Reply #89 on: March 01, 2009, 03:25:52 PM »
Hello guys Im new to this forum, but I thought I can be of some help.  My E30 318is had exactly the same symptoms as rallyegolf.  It turn out to be the vibration damper part # 11231721169.  It seems that the rubber between the inner and outer pulley components gives way, so the inner part spins and the outer part stays put or spins very slowly.

Hope it helps