Engine stuttering. Stumped.....

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  • drutt23
    Grease Monkey
    • Feb 2011
    • 392
    #1

    Engine stuttering. Stumped.....

    Ok so it's 1992 M50NV in my E36. It's been stuttering during take off on occasion. It isn't always, but fairly often. It seems to be worse when running 91 octane. I tried E85 a few days ago and it seems better. I'm skeptical of the E85 though. I don't like using it personally. So any ideas on why it stutters? I put some injector cleaner through it a couple weeks ago, but I'm not sure if it really changed anything. Should I check my timing? Adjust the air fuel ratio?? I'm kinda stumped right now. Thanks in advance!

    -Devin
    1989 325i|1992 325i|And completely obsessed|:woowoo:
    sigpic BMW. The Ultimate Driving Machine.
    The Build...
    Tags: None
    • scottinAZ
      E30 Fanatic
      • Dec 2009
      • 1312
      #2
      start simple, when was the last time it had a basic tuneup, Plugs, Filters etc....
      I saved 15% on my Bimmer parts by switching to ...



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        • trackjunkie21
          No R3VLimiter
          • Jan 2010
          • 3962
          #3
          Test the resistance in the coils, replace fuel filter, check air filter, check for vacuum leaks and for god's sake please don't ever run e85 again.
          Your signature picture has been removed since it contained the Photobucket "upgrade your account" image.

          Originally posted by Wh33lhop
          VANOS: sometimes you just need to go full retard.

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            • drutt23
              Grease Monkey
              • Feb 2011
              • 392
              #4
              I did the plugs about a week ago. Replaced with Bosch Platinum's. The air filter wasn't too bad when I checked it. I do need to check the fuel filter. That was going to be my first go at it on Wednesday. Have to wait for paycheck :( Vacuum leaks wasn't something I had thought of yet. I will check that tomorrow morning for sure. I don't plan on running the E85 again. I was really scared to even put any in. I didn't fill it thankfully. Only put a few gallons in. I've always run 91 in everything else I've owned. Unfortunately I don't have much option in my part of the country. We only get 85, E85, and 91...Thanks guys. I appreciate it
              1989 325i|1992 325i|And completely obsessed|:woowoo:
              sigpic BMW. The Ultimate Driving Machine.
              The Build...

                Comment

                • DREWHALL
                  E30 Fanatic
                  • Feb 2006
                  • 1207
                  #5
                  Ditch those Platinums. I've heard of many different brand of vehicles not running well with those.

                    Comment

                    • dannyyisntt
                      No R3VLimiter
                      • Sep 2008
                      • 3141
                      #6
                      Originally posted by DREWHALL
                      Ditch those Platinums. I've heard of many different brand of vehicles not running well with those.
                      I've ran a few sets of them in my e36 over the course of five years with no issues.
                      sigpic

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                        • sohc12vm20
                          Mod Crazy
                          • Jan 2010
                          • 688
                          #7
                          MAF maybe..
                          sigpic

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                            • drutt23
                              Grease Monkey
                              • Feb 2011
                              • 392
                              #8
                              I've heard mixed comments about the Platinum's. I did notice that the MAF doesn't have the first screen on it just past the air filter. Somebody could have removed it for some reason...god knows why....I'm tinkering with it right now, tryin to figure it out.
                              1989 325i|1992 325i|And completely obsessed|:woowoo:
                              sigpic BMW. The Ultimate Driving Machine.
                              The Build...

                                Comment

                                • drutt23
                                  Grease Monkey
                                  • Feb 2011
                                  • 392
                                  #9
                                  Found the culprit. I even knew about it a couple weeks ago when I first started buying parts and such. Just totally spaced it until now. My intake bellows are cracked and torn to shit.....I hate when I have stupid moments like that lol.....
                                  1989 325i|1992 325i|And completely obsessed|:woowoo:
                                  sigpic BMW. The Ultimate Driving Machine.
                                  The Build...

                                    Comment

                                    • DREWHALL
                                      E30 Fanatic
                                      • Feb 2006
                                      • 1207
                                      #10
                                      That sucks!

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