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Re: TR4A Sputtering / Loss of Power on Highway

To: "Amatruda, Andy" <aamatruda@email.mc.ti.com>
Subject: Re: TR4A Sputtering / Loss of Power on Highway
From: Joe Curry <spitlist@gte.net>
Date: Mon, 27 Sep 1999 07:31:55 -0700
Cc: "'triumphs@autox.team.net'" <triumphs@autox.team.net>
References: <BD6E8B4A7960D311AC900008C7E63D92C27D@atmail2.mc.ti.com>
You might check for debris in the exhaust system that is causing back
pressure as the speed increases.

Two years is plenty of time for mice to make a nest in your exhaust
system.  They do that, you know!

Joe

"Amatruda, Andy" wrote:
> 
> After several annoying misfortunes after rebuilding the engine I finally put
> the car up on the Highway.  Almost all of the vibration experienced
> previously is gone due to 1) balancing the wire wheels at a business that
> actually knows how to do wire wheels correctly and 2) balancing the
> driveshaft.  However a couple minutes of highway speed brought on
> backfiring/sputtering through the exhaust with a significant loss of power.
> When I got off the exit and resumed city driving it seemed to "recover".
> Checked under the bonnet; everything seemed OK.  Went back home and the same
> thing happened (I could barely maintain the speed limit).
> 
> Things to consider:
> 
> The car hadn't been driven for 2 years during the rebuild (carbs were
> rebuilt a few years earlier)
> 
> The engine has less than 100 miles on it
> 
> The gas, although it has stabilizer in it is also about 2 years old
> 
> I suspect a fuel delivery problem.  I seem to recall a thread about setting
> the floats in the bowls.  I have installed Grosse Jets and have never felt
> that setting up the floats per the manual is giving the desired result so
> this may be a problem. Anyone have any comments here?
> 
> I'm going to replace my in-line fuel filter a lunch to see if that is
> creating a restriction.  What else should I check?
> Regards ..... Andy
> 
> Andy Amatruda
> Senior Member Technical Staff
> AS&C, M&C
> aamatruda@ti.com
> (508) 236-3219 phone
> (508) 236-3586 fax

-- 
"If you can't excel with talent, triumph with effort."
 -- Dave Weinbaum in National Enquirer


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