[s-cars] Now Blown head gasket - was : stumble and smoke at idle

[james McCarthy]

Thanks - so haven't checked compression yet but... Stumble Stumble Stumble for 10-15 seconds on start up (clears in 10-15 seconds) with copious smoky exhaust that clears after 10-15 minutes of driving with a 1 inch drop in coolant in 48 hours (total of 15 miles driven) - seems like it must be the head gasket??? otherwise I have both fleas and ticks....  BUt will hunt for other loss potentials...
-jamie

--- On Mon, 12/14/09, Robert Myers <bob at chips-ur-s.com> wrote:

> From: Robert Myers <bob at chips-ur-s.com>
> Subject: Re: [s-cars] Now Blown head gasket - was : stumble and smoke  at idle
> To: "james McCarthy" <jjssmccarthy at yahoo.com>
> Date: Monday, December 14, 2009, 10:13 PM
> *This message was transferred with a
> trial version of CommuniGate(r) Pro*
> 
> Jamie,
> 
> There are many ways for coolant to be lost.  Only a
> few of them go with a blown head gasket.
> 
> Other than loss of coolant do you have any other symptoms
> suggesting a blown head gasket?  Is there evidence of
> coolant in the oil pan?  Have you checked compression
> for all cylinders?  Any of them down
> significantly?  Any evidence of engine gases backing up
> through the coolant reservoir?
> 
> Bob
> 
> At 10:52 PM 12/14/2009, you wrote:
> > *This message was transferred with a trial version of
> CommuniGate(r) Pro*
> > So while pulling the injectors this evening to check
> for leaks noticed the coolant had dropped 1 inch from
> yesterday... so I geuss head gasket it is.  Crap.
> > 
> > So what else to do while I'm there... just did the
> t-belt and h20 pump a year ago... but crazy not to just do
> them again I guess.  ARP studs, metal gasket...
> anything else?
> > thanks
> > -jamie
> > 
> > 
> > On Mon, Dec 14, 2009 at 11:54 AM, james McCarthy
> <jjssmccarthy at yahoo.com>wrote:
> > 
> > > Ok,
> > > New problem. 2 days ago my s6 (full OEM RS2 bits)
> developed a stumble on
> > > initial start up - but cleared within the first
> 10 seconds or so of driving.
> > >  This was associated with thick exhaust.
> Considered ignition
> > > (coil/pos/plugs) or leaking injector.  So
> replaced the plugs (new bosch
> > > F5DPOR) and the stumble seemed to be gone...
> > > However this am the stumble was back on initial
> start up only - not as
> > > severe and lasted just 2-3 seconds... but now I
> have "heavy" exhaust at idle
> > > even after driving for 10-15 minutes.  No
> puffs with hard acceleration just
> > > at idle... car seems to be running perfectly
> otherwise pulls strong to
> > > redline with full boost and no stumbles...
> > > So where to start - I doubt coil/pos (5 new oem
> 20K ago)  as I would expect
> > > the stumble to persist.  So I'm thinking PCV
> system as I can't figure why a
> > > leaking injector would result in continued thick
> idle. Also while turbo
> > > seals or valve seals are possible - I can't
> figure how they would cause the
> > > initial rough idle.
> > > So plan is to clean out the PVC system (also
> installing a catch can) and
> > > also see if I can determine if an injector is
> leaking.  Any thoughts or
> > > advice would be appreciated.
> > > tia
> > > -jamie
> > 
> > 
> > 
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