Dave
The car is a 77 TVR 2500M, so its the late model carbs. That said, the
charcoal canister is long gone, so no can and no tubes. That said, if I am
understanding the function correctly of the valve, to have the pin fully
depressed at idle is actually the intention? ( or at least accepatable)
----- Original Message -----
From: <Dave1massey at cs.com>
To: <triumphs at autox.team.net>
Sent: Monday, March 19, 2012 10:34 PM
Subject: Re: [TR] TR6 ZS won'y idle Update
> You didn't say what year your car is. If it is a 73 or later it is fitted
> with the Anti-Run-On system. This system applies a mild vacuum to the
> float
> chamber when you shut down which has the effect of starving the engine for
> gas so it doesn't run on. There is a tube running to the charcoal
> canister
> that vents the top side of the fuel bowl. There is another port at the
> carb
> inlet face (inside the air filter) that also vents the top side of the
> float bowl. The lever to which you refer operates a valve that switches
> between
> the two. When the throttle is closed the bowl is vented to the charcoal
> canister. Open the throttle and the port at the carb inlet is used.
>
> Dave
>
> In a message dated 3/19/2012 7:57:32 AM Central Daylight Time,
> eoot at citlink.net writes:
>> I took a look at the carbs that came out and noticed that the idle screws
>>
>> were down much further that I had tried. In fact. they were down enough
>> that the pin that the lever pushes against is totally depressed. What is
>> the purpose of that pin? I don't see it in my books. Anyway, I then set
>> the screw down to approx. the same setting. This pretty much bottomed
>> out
>>
>> the adjustment (screw appears shorter than on old carbs). Started the car
>> and it idles at 8 to 900 without the choke pulled at all. Is the most
>> likely
>> reason for this the cam? (which was in the car when I got it)..I will
>> check
>> the valve lash as I did find the specs on it. Big difference from stock.
>> I
>> show stock at .010 while this cam spec is .015 inlet, .017 exh. This
>> seem
>>
>> plausible?
>
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