bucking above 1.1 bar, max boost 1.3

Chris Covington malth at umich.edu
Mon Feb 25 13:06:04 EST 2002


Yes I did steam clean the engine on Thursday.  It was a little rough on
Friday with similar symptoms, but I also drove 400 miles this weekend and
didn't experience anything Saturday on the first leg of the trip.
So I thought all the moisture would've gotten out of the system.

Today the problem was completely gone, 1.8 bar, no hesitation, which
leads me to definitely think the problem is electrical of some sort.  All
the hoses, including that Michelin man are fine.  If it remains fine I'll
assume it was moisture.
I'm going to get rid of that K&N ASAP also, and check all the MAF
electrical connections today.

Thanks for all your help!

'91 200q20v

On Mon, 25 Feb 2002 Jeff.Bernstein at pneumaticscale.com wrote:

> The only time I have experienced the extreme bucking that you have described
> is after I have cleaned my motor.  Apparently I was getting water into the
> distributor and this would cause the bucking at any boost over 1.0-1.1 bar.
> In a couple of days the moisture would clear and the car was fine.  I wonder
> if you may have gotten water up into the engine compartment and have a
> similar situation.
> Good Luck,
> Jeff Bernstein
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