Robert,
While there are chemicals on the market that remove carbon, cold water down the
throat of a warm engine works wonders. Old, old trick but one that works,
albeit difficult on side draught carbs. This may not remove all the carbon but
it gets the most of it. Only by removing the head, cleaning the combustion
chamber and valves can you be assured that you've do all you can.
WFO Herb
Robert Duquette wrote:
> How does one clean the combustion chamber?
>
> -----Original Message-----
>
> >there are three reasons for dieseling as I understand it...
> >
> >A. a hot spot in the combustion chamber which continues to fire the mixture
> >B. a throttle that can't be closed to prevent the fuel from continuing to
> >flow.. Or the Idle set to high...
> >C. bad gas which doesn't burn clean and leaves deposits for A above....
> >
> >so to prevent dieseling one should Clean the combustion chamber.... then
> >ensure it doesn't get too Hot by having the correct fuel mixture and the
> >throttle blades set to the lowest livable setting for a quality Idle... and
> >the timing set correctly to ensure it doesn't add to the Heat build
> >up....That is not to far advanced....
> >
> >Okay guys go ahead and blast away at my ignorance... I can live with it..
> >
> >Keith Turk
> >Austin Healey 100 / Bugeye / Box Sprite / Bonneville Land Speed Racer
> >Camaro ( D Gas Altered )
> >
> >----------
> >> From: HFC <froggi@cdsnet.net>
> >> To: andy webster <trunkie@hotmail.com>
> >> Cc: Daniel1312@aol.com; spridgets@autox.team.net
> >> Subject: Re: Octane & CRs was Re: Automotive calculations for dummies
> >> Date: Saturday, May 08, 1999 3:17 PM
> >>
> >> Andy,
> >>
> >> Did you consider carbon build up?
> >> WFO Herb
> >>
> >> andy webster wrote:
> >>
> >> > No fair!
> >> > I'm getting dieseling after switch-off and I suspect a bit of knocking
> >with
> >> > 96 octane leaded. I've only got ~9:1 CR, whats goin on?
> >> > Is my ignition timing up the khyber?
> >> > Andy
> >> >
> >> > >From: Daniel1312@aol.com
> >> > >To: kturk@ala.net, trunkie@hotmail.com, spridgets@autox.team.net
> >> > >Subject: Octane & CRs was Re: Automotive calculations for dummies
> >> > >Date: Sat, 8 May 1999 15:37:54 EDT
> >> > >
> >> > >In a message dated 07/5/1999 7:47:31PM, kturk@ala.net writes:
> >> > >
> >> > ><< Yeah there is nothing about this that should work... especially
> >with no
> >> > > lead.....
> >> > > >>
> >> > >I am not sure what petrol is used. It might be 98 (English method of
> >> > >calculation) octane unleaded or 95 leaded. I don't think they use
> >> > >additives
> >> > >but the guys that run 15:1 CRs might.
> >> > >
> >> > >For myself I ran 11:1 on standard 95 leaded with no problems (on a
> >full
> >> > >race
> >> > >mixture strength).
> >> > >
> >> > >
> >> > >Daniel1312
> >>
> >
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