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rebuilt m20 2.7i wont idle kinda revs , found out problem hahah

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    #16
    well i got a mechanic to look at mine , and by the looks of it you could have a electrical problem thats what i was told and it turned out to be true aslong as your engine isnt messing up whilew revving it , i say go back and re check each plug could be corrosion , clean them up , and check that one c191 connect to your injecotrs mine was filthy... cleaned it you can by a spray for this and add electrical greese for better contact , linkable fuse < but i doubt your car would be able to start if thats blown but could check it

    to me that sounds like too much gas..gas mixture is wrong to start. remove a sparkplug and check if there is too much gas.
    ohh what he said dont start the car see if the plugs are wet u could have leakey injectors , pull off the vaccum line to the regulator check if there is gas going through that into the intake manifold regulator could be gone ,
    Sold Black BMW E30 325IS
    1987 bmw e30 euro part out
    1990 Bmw 325i Cabrio 2.9
    Metric Mechanic 2.9 stroker
    Holset Hx35w CXRacing Manifold
    MegaSquirt ARP HeadStuds
    OEM HG AEM Methanol injection
    20psi

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      #17
      Wouldn't the ecu regulate how much gas is being put in the engine , and would a new fuel filter cause this , also car will only run with out the IAC or the maf connected , if I try and connect the iac and the Maf as the car is running , as soon as I connect the iac to the throttle body the car dies, if I put the elbow close to the throttle body it's almost as if the car is gonna rev ��I'm posting another video

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        #18

        New vid
        Last edited by e30m20TurbO7; 03-28-2013, 11:49 AM.

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          #19
          remove a sparkplug and smell if your engine is flooded. Im almost sure its fuel related
          Denny
          ___________
          1990 BMW red 325IC M30B35 all stock Girlfriends ride
          1991 BMW black 318IC (M62b44 Megasquirt 2 ver 3.57)

          Blogs:
          http://bmw325e30.blogspot.com/ (restoration)
          http://bmw325e30turbo.blogspot.com (Twincharge M20)
          http://bmw325e30m62b44.blogspot.ca/

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            #20
            I remember my car would do the same thing. You start it and then suddenly secounds later it just shut off. I managed to get home by accelerating the peddal to keep live.

            I found that the plastic clips or whatever on the throtle links were no good. I think you should check that to see if operating right not shutoff

            I cant tell you the part number cuz I never fixed it I just swap another engine.. but check the throttle links

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              #21
              I still haven't figured this out , if its flooded what could it be . i checked the c191 connector looked dirty a little bit , but I can get it to run without the air box so im pretty sure the injectors are working . Iac buzzes , tps clicks , afm operates , I have no fuel obstructions , I have a new fuel filter in the rear and a little fuel filter that's see through up by the fuel rail . I've got a new plugs. I checked to see if I could blow through the fpr and I couldn't .
              Anyone have any ideas what this could be , seriously the weathers warm and i wanna drive my e30 .
              Any advice seriously any input I have some vids posted up
              Im not sure if the Alternator is charging , because the lights are on the dash but it used to do this until I touched the pedal ,could that have anything to do with it ? Help me 0 miles on my motor :(
              Originally posted by Denny View Post
              remove a sparkplug and smell if your engine is flooded. Im almost sure its fuel related

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                #22
                take your injectors out and have them checked and cleaned, they could be leaking/ dumping too much fuel.
                sigpic

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                  #23
                  I'd replace the CPS just for the hell of it. It can be intermitent and cause all sorts of problems. I had a car running rough and lean (so lean the exhaust pipes were red) and it was the CPS failing.

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                    #24
                    im already removed the injectors , and i sprayed carb cleaner on them checking for vacuum leaks and there were none

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                      #25
                      you should properly test the injectors , also when you plugged in the ICV it shut off what if its not operateing correctly or just stuck and not working check that out clean it out aswell , and your ecu isnt throwing any codes? it sounds like its an electrical issues go through all the wireing check every little thing to see if its torn , i know that mercades had a problem with similar issues were the wires would just decompose with these bmws sometimes the wires are so old the insulation crack look around find crack maybe even a tear in the wire can cause all sorts of issues
                      Sold Black BMW E30 325IS
                      1987 bmw e30 euro part out
                      1990 Bmw 325i Cabrio 2.9
                      Metric Mechanic 2.9 stroker
                      Holset Hx35w CXRacing Manifold
                      MegaSquirt ARP HeadStuds
                      OEM HG AEM Methanol injection
                      20psi

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                        #26
                        i got it diagnosed and i was told it is the TPS and the CPS , bought a cps today and im picking up and tps today from a friend

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                          #27
                          To much fuel pressure , what causes this ? Not a plugged return linen, stock injectors , 255 walbro hellp

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                            #28
                            Replaced fuel pressure regulator , and it fixed the fuel pressure issue , but now my cars running lean and won't run unles you feather the throttle it will sorta rev but not really , with the airbox and everything connected . I need some help I dont believe I have any vacuum leaks since I've checked everything and the only possible one would be the breather tube , theres no oring on the block side , any idea why my car would be running lean,
                            Last edited by e30m20TurbO7; 04-06-2013, 02:40 PM.

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                              #29
                              Have a smoke test run.
                              The car makes it possible, but the driver makes it happen.
                              Jim Levie, Huntsville, AL

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                                #30
                                I put the harmonic balancer one bolt off and it was not positioned right causing ignition timing to be wrong

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