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Re: [6pack] accelerating engine issue

To: 6-Pack <6pack@autox.team.net>
Subject: Re: [6pack] accelerating engine issue
From: oliver <sumton@sbcglobal.net>
Date: Tue, 18 Sep 2007 05:49:38 -0700 (PDT)
will we see how your daughter does tonight when you get home????

John VanNorman <jsvannorman@gmail.com> wrote:  Everyone - Thanks for all your 
help.

I took a look at the car last night to start troubleshooting based on
what everyone had said. This time I took a really close look at the
hoses and connections, and at first glance everything looked okay.
But then I started tracing each and every connection and comparing it
with the TRF book and the other TR6 in my garage and lo and behold, I
realized that some DPO had actually really messed up the connections
between the thermo control, carbs, flame traps, and distributor. In
fact, one of the four connections on the thermo control unit was
completely open. So I pulled everything off and reconnected it
correctly using some spare parts I had.

I didn't get a chance to start her up since my little baby girl was
asleep upstairs, so we'll have to see how she (the car, not my
daughter) does tonight when I get home from work.

John V.

On 9/18/07, Sally or Dick Taylor wrote:
> John---A little something here about the vacuum line going to the
> distributor...On the later TR6 it should hae only vacuum retard. No
> vacuum advance. The timing advances thru centrifugal motion from weights
> inside the distributor.
> When disconnecting the vacuum retard (I'm pretty sure this is what you
> have) the engine should speed up about 600 rpm. The timing should also
> change as much as 14 deg. when checking this with the aid of a timing
> light.
>
> If you have issues with the carburetors, it can make the engine speed up
> to around 2,000 rpm. If you can follow Vance's suggestions, do so, but
> first understand what is going on with the vacuum influence. You can
> bi-pass the thermostatic control when checking the operation of this
> retard. Just run a hose from the bottom of the rear carburetor, where it
> should've been connected, right to the vacuum canister on the
> distributor. The thermo control only comes into play when it senses that
> the radiator coolant is really hot (like 2000F) and shuts off the
> vauum supply to the dist. Te engine would then speed up, and hopefully
> the temp would drop. That's how it's supposed to work, anyway.
>
> Dick
>
> Sender: owner-6pack@Autox.Team.Net From:
> jsvannorman@gmail.com(JohnVanNorman) Date: Mon, Sep 17, 2007, 10:04am
> (PDT+3) To: 6pack@autox.team.net (6-Pack) Subject: [6pack] accelerating
> engine issue
> Here's one for the list I'm stumped on. I've been doing some work on my
> father's new TR6 (a 74 1/2), doing a little TLC projects on it, fixing
> things previous owners messed up or didn't take care of, etc. For some
> reason when the car is idling after starting her (i.e., it is just
> warming up and you have the choke pulled out) the engine will start
> accelerating on its own. If I push in the choke, it fixes it (but the
> engine dies, so I'm not sure if that really is fixing it or it the
> acceleration is stopping because the engine is dying). Also, if I
> disconnect the hose running to the vacuum advance it stops doing it. Any
> thoughts or ideas?
> The one thing I noticed is that the hose running to the vacuum advance
> is not the standard hose, but rather a larger soft rubber hose someone
> installed along the way, but I'm not sure if that has any impact (the
> diameter of the hose is large enough that is slips on to the vacuum
> advance without any adaptor).
> John V.
> --




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