From: ricky@benchmaster.esd.sgi.com (Ricky Cheng)
Subject: Re: Engine jerking problem
Organization: Silicon Graphics, Inc.
Date: Fri, 14 Aug 1992 23:28:11 GMT

I have same problem,
1st, I start with changing all spark plugs
then, I found a broken hose on top of the engine when I was changing the
plug.
a tiny little hose connect from the engine to .?
I replace it and the jerking goes away
BUT, when I put heavy load on my car (4 passagers with AC on)
when I apply a lot of gas and start from 1st gear, it jerks a little
(I think the formal word for jerk is hesitate, isn't it ?)
I try all kinds of fuel injector cleaner include (STP, Redline..)
Still there is a problem

Ricky

In article <1992Aug14.132323.17610@philabs.philips.com>,
ytl@philabs.philips.com (Ying Tat Leung) writes:
|> 
|> In article <l8mkraINN1sj@exodus.Eng.Sun.COM>, klein@napali.Eng.Sun.COM
|> (Mike Klein) writes:
|> |> In article 27086@oracle.us.oracle.com, jpau@oracle.com (Jeffrey Pau)
|> writes:
|> |> >Hi, I have an 87 VW GTI, for the last few months, it has developed a
|> problem that I
|> |> >can't identified.  Everytime when I give the engine some mild sudden
|> gas, the whole
|> |> >car jerks on me.  The more sudden gas I give/stop giving, the more
|> jerking motion I feel.
|> |> >For everyday driving, it becomes very annoying and I can feel the
|> jerking motion (from
|> |> >the engine bay) through my steering wheel everytime I change gear. 
|> Talking to many
|> |> >mechanics, they all thought that was caused by a worn engine mount. 
|> So I changed both 
|> |> >the front and right rear engine mounts (they both looked good, but I
|> replaced them 
|> |> >anyway), without any improvments, I desperately need some good
|> suggestions.  
|> |> >
|> |> >Has any GOLF/GTI owners experienced similar problem?  My car has
|> 83,000 miles on it.
|> |> 
|> |> I have an '85 GLI and get something like this.  It started recently,
|> |> and only happens when the gas tank is nearly empty (like, 2-4
|> gallons
|> |> left).  Also the fuel pump makes noise at this level.  Haven't tried
|> to
|> |> trace it further.  It feels like the engine momentarily cuts out on
|> |> me.  Could be a tank of bad gas sometime in the past.
|> |> ---
|> |> 
|> |> Mike Klein		{wherever}!sun!klein || mike.klein@Eng.Sun.COM
|> |> Sun Microsystems, Inc.	Mountain View, CA
|> |> 
|> 
|> My 88 Jetta has a kind of similar problem.  After the engine is started
|> and
|> run for a minute or two, this jerking appears momentarily (for less than
|> a 
|> minute or so).  I had the car idle and observed the engine rpm carefully
|> as
|> I stepped on the gas, finding that the engine rpm will drop back to idle
|> then
|> immediately goes back up to the correct rpm AS I HELD MY FOOT ON THE GAS
|> PEDAL.
|> This happens when the engine is at 2000-2200 rpm and will occur several
|> times,
|> one after the other, if I continued to hold my foot on the gas.  It
|> seems that
|> this will only occur at a particular engine temperature, as the engine
|> warms up
|> the problem goes away.
|> 
|> I've used Techron injector cleaner and the fuel transfer pump is new
|> (just 
|> replaced a few months ago).  I do not hear any noise and the car starts
|> fine.
|> What problem have I encountered?  Water in gas?  Water is not that
|> likely as
|> I've been having this problem for a while now (over many tanks of a few
|> brands of gas).  And of course when I took it to the mechanic he
|> "couldn't
|> reproduce the problem."
|> 
|> Perhaps other fellows having similar problems before could give a clue. 
|> Thanks
|> in advance.
|> 
|> Regards,
|> Ying
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