[TR] Hi RPM's

[Wbeech@flash.net]

I had the same with my TR3, it was as simple as the throttle stops  
were not properly sync'd.  One was down just a little too far and was  
holdind the other carb open.

Solution is the disengage the carbs so they are independent and re- 
sync them and re-reconnect.

Or, it could be excessive wear in the carb bodies... a more involved  
issue that usually means sending them off for a rebuild.

Mobile Bill

On Jun 5, 2010, at 7:30 AM, Cosmo Kramer <tr4a2712 at yahoo.com> wrote:

> Hi List!
>
> I've got a problem/question for the list to help me out on:
>
> History: I start up the car & everything is great on the instrument  
> readings-
> Idle= 850-900 RPM. After the engine runs for about 1/2 hr. doing 40+  
> MPH- tach
> is reading 2,000->3,000 (depending on my driving speeds). When I  
> then come to
> a stop light, sign, etc. the RPM's stick at 2,000. I then 'blimp'  
> the gas
> peddle (a quick accretion & then drop the pressure on the gas  
> peddle) the
> RPM's then drop down to idle speed =850->900.
>
> Question: What's causing this to happen?
>
> I think it's the carb. linkage sticking. So I've cleaned the linkage  
> with a
> tooth brush, then blew compressed air on to the linkage on the  
> inside of the
> engine bay. Then proceeded to place a drop of graphite oil (thinking  
> at this
> is a "dry lubricant") onto all pivot points of the carb & gas peddle  
> linkage,
> hoping to prevent sticking. I then let the engine cool (next day),  
> to TR (test
> ride) the TR4A again to have the SAME thing happen all over again.
>
> -Cosmo Kramer
>
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