[V6-12v] Hesitation

Muhammad m at 90683.com
Thu Feb 12 15:50:54 EST 2004


You need a "MotorVac" machine to do this type of cleaning. I haven't heard of individuals figuring out a way to get the same effect of a Motorvac without the machine itself.

Try this link for more info: http://www.motorvac.com/mcs245_pg.html

I can't imagine it's exclusive to the United States.

I have also used FI cleaners in the bottle with mixed results but after a MotorVac my car was running like new. Prior to the cleaning, the car could barely stay running, was stumbling, and all that bad stuff.

But as my mechanic said going in, it's really a crap shoot with hesitation since so many things can cause it.


  ----- Original Message ----- 
  From: James4ihl at aol.com 
  To: m at 90683.com ; James4ihl at aol.com 
  Cc: v6-12v at audifans.com 
  Sent: Thursday, February 12, 2004 12:42 PM
  Subject: Re: [V6-12v] Hesitation

  Muhammad --

  Thanks for the suggestions. The spark plugs and fuel filter were changed at the last service interval, but had no effect on this problem. To date, the car has had two doses of injector cleaner run through (I usually do so every 3000-6000 miles, depending on the formulation). However, I'm not familiar with the procedure you describe where you bypass the fuel lines, etc. Is it something you do yourself, or is it a garage job with specialist gear?


  In a message dated 12/2/04 4:06:49 pm, m at 90683.com writes:


    In my experience, hesitation has been caused by either faulty spark plugs,
    an old fuel filter, or most frequently, clogged injectors.

    I've cured it by doing a motorvac fuel injector cleaning. Not sure if you
    have motorvacs in the UK, but basically it's a system that bypasses the fuel
    line and run the car on FI cleaner for 20-30 minutes. This "super shot" of
    FI cleaner does the trick for me.



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