[TR] [EXTERNAL] - Re: '3a ignition update and next

TERRY SMITH terryrs at comcast.net
Sun Jul 29 17:05:30 MDT 2018


Haven't seen all the posts on this, so forgive if this is duplicative.


I've found issue in the past with a piece of grit in the float bowl needle and seat.  Might cause the fuel to starve enough to keep from starting, but not so much as to completely deprive the bowl? 


The other thing is, can the mixture setting be off?  I think you mentioned not smelling gas, so maybe too lean?  (And I imagine you've already checked the seating of the needle valve in the piston and that the pistons go up and down smoothly).


Lastly is fuel pressure.  Might the fuel pump be sending fuel, but insufficiently? 


I see others have talked about a vacuum leak and whether the head gasket might be bad. 


You've got us all curioser and curioser. 


Terry Smith, '59 TR3A

New Hampshire


> On July 29, 2018 at 3:57 PM rpeglow <rpeglow at optonline.net> wrote:
> 
>     Something  fishy here. Maybe not enough fuel in bowls. Did you disco fuel line before  carb and see fuel pumping (into container) on start try?  Bob 
> 
> 
> 
>     Sent via the Samsung Galaxy S9, an AT&T 4G LTE smartphone
> 
>     -------- Original message --------
>     From: "Wbeech at flash.net" <wbeech at flash.net>
>     Date: 7/29/18 09:07 (GMT-05:00)
>     To: David Templeton <davidt at opentext.com>
>     Cc: triumphs at autox.team.net
>     Subject: Re: [TR] [EXTERNAL] - Re:  '3a ignition update and next
> 
>     You can try ‘hand choking’ by covering the carbs while someone cranks.  If that doesn’t get fuel into the cylinders you either have a major vacuum leak, a blockage in the carb body, or zero compression.  
>     Bill B
> 
>     Sent from my Apple II+
> 
>     On Jul 28, 2018, at 11:41 PM, David Templeton < davidt at opentext.com mailto:davidt at opentext.com > wrote:
> 
> 
>     Hmmm, had it down in the natural position as well.  Will try that again   
> 
>      
> 
>     From: Triumphs <triumphs-bounces at autox.team.net mailto:triumphs-bounces at autox.team.net > On Behalf Of Tony Drews
>     Sent: Sunday, July 29, 2018 12:14 AM
>     To: triumphs at autox.team.net mailto:triumphs at autox.team.net
>     Subject: [EXTERNAL] - Re: [TR] '3a ignition update and next
> 
>      
> 
>     You'll not get fuel with piston up, only with it down (no vacuum across jet with piston up).  Possibly major vacuum leak otherwise?
> 
>     - Tony
> 
>      
> 
>     On 7/28/2018 10:24 PM, David Templeton wrote:
> 
>         > > 
> >         WOWZA!! 😊
> > 
> >          
> > 
> >         https://www.facebook.com/davidt50/videos/10155449854071960/ https://urldefense.proofpoint.com/v2/url?u=https-3A__www.facebook.com_davidt50_videos_10155449854071960_&d=DwMDaQ&c=ZgVRmm3mf2P1-XDAyDsu4A&r=346MKQty4J9yevdUa9Fj_cT53y_74TwSRM-I7J2SFzs&m=qIIBUYIqaEYI4gXRpZcClLkk2u74NqOqFpCdg-f4EQM&s=ZdF_inSDwAcBiZmX4CmJvzEwGz88NXtIaLja-cMCFTc&e=
> > 
> >          
> > 
> >         back to basics, cleaned points, replaced condenser, replaced bad coil and the video ( with a squirt of starter fluif ) catches.  But not with just fuel.  So to track down delivery problem next…
> > 
> >          
> > 
> >             * Fuel in the filter
> >             * Fuel in the float bowls
> >             * Plugs are dry when cranked, would expect them to be a little wet
> >             * Not smelling of gas either
> > 
> >          
> > 
> >         General thoughts to look for tomorrow?  Had the butterflies and the piston up when cranking so far…….
> > 
> >          
> > 
> >         Regards
> > 
> >         David
> > 
> > 
> > 
> > 
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