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engine problems in the rain

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    #1

    engine problems in the rain

    so when it rains or is really humid out my car will have a very hard time accelerating, it misses and bogs down. i have just replaced the cap and rotor with no change and the plugs are fairly new too and look fine. im stumped any ideas? i dont wanna throw anymore parts at it till i have a good idea of what it is
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    #2
    Plug wires.
    Lorin


    Originally posted by slammin.e28
    The M30 is God's engine.

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      #3
      Good start. Have you done the cap and rotor recently? Checked for vacuum leaks? I know this may seem stupid but check the basics! Does it run good when it's dry out?
      clutchCTRL!
      Move with a purpose.
      - 1991 325iX 4dr/5spd
      - 1976 2002 SlickTop/2.7i M20/G260
      - 2000 323i AT
      2016 Mazda CX3 Sport AWD

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        #4
        you could try filling a spray bottle and misting the cables. if you see arcing or it starts to stumble you found your problem

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          #5
          As far as my history with these cars is...we rarely had to change the wires. Although this sounds like the most likely culprit. Keep in mind it can be any wiring that is exposed to moisture in the engine bay that is connected to the ign system. Wires get brittle and old and start to crack.
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            #6
            water in the tank?
            Condisation maybe? if no water in tank, try this cheap but offten over looked part: fuel filter..
            I know it sounds funny but you would be suprised..
            https://www.forabodiesonly.com/mopar...re-irs.356333/

            This Forum is built on love, and powered by Sexual Tension!

            When I die, I want to go peacefully like my Grandfather did, in his sleep -- not screaming, like the passengers in his car.

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              #7
              well as of now i have replaced the fuel filter, cap, rotor,plug wires, temp switch its not raining now so it runs fine but still stumbles and bogs if i drive through a real wet spot on the road. i have no clue were to look now. i don't think its water in the tank because it runs fine when its nice out.

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                #8
                Ground strap, check that sucker out! Mine was completely bare and was super stiff, wires shouldnt be stiff as this was. It did help mine ith smoothness of acceleration.

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                  #9
                  well i still cant find the problem.. this week it has been fine besideds a few misses here and there. but now its pouring and i can barely drive the thing. if i rev it with the clutch in i can here it "popping" in the muffler.. does anyone have any other ideas i can check out? pleeeeaaasssee help

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                    #10
                    also if i slowly rev the motor it stumbles bad and pops in the intake

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