Neil

        If the ThrottlePlateShaft hole is worn & enlarged you can get an air

leak there.

        Back in the '60s while in the USAF I was finishing an engine rebuild

at the AutoShop & it was a Sat afternoon so they were going to be closed

for the next 2 days & I was anxious to have my wheels back under me so

I got in a hurry ~ picked up the Carb' & without looking at the bottom I

dropped it into place & bolted it down, connected the hoses & linkage &

right @ closing time I fired it up & dang near blew everybodies eardrums

~ an old piece of gasket material had gotten stuck to the mating surface

on the bottom of the Carb & produced an air leak ~ it actually sounded

kind of cool ~ sort of resembled a T38 or F5 spooling up but I fixed
it just

the same.

                                                        ORR ~ DeanB

On 24 Jun , 2012, at 10:38 PM, neil n wrote:

> Hi all.
>
> Ok. Using what I had on hand (measured to ensure this LED drew low
> milliamps, though this was @ 12V).....
>
> 12V LED, + lead to TVS + ,  LED goes on, throttle at rest, throttle
> valve
> switch closed, and goes off, throttle opened TVS open. Most
> importantly,
> for my purposes, LED indicates that TVS is closed even when engine is
> surging, foot off gas pedal. But....
>
> What is that whistle sound at ~ 39" - 55" ?  Vacuum leak?
>
> TB gasket is new, rubber hoses at EVAP hoses, FPR, PVC "T", all
> good. Air
> distributor has no holes. Immediately noticed whistle while driving
> with
> engine lid off. Did not hear it revving engine in driveway, lid off.
>
> Red LED is mid screen at full screen view.
>
> http://www.youtube.com/watch?v=IQwCxo9Mzho
>
> Neil.
>
> --
> Neil n
>
> 65 kb image Myford Ready For Assembly  http://tinyurl.com/64sx4rp
>
> '88 Slate Blue Westy to be named.
>
> '81 VanaJetta 2.0 "Jaco"  http://tubaneil.googlepages.com/
>
> Vanagon VAG Gas I4/VR Swap Google Group:
>
> http://groups.google.com/group/vanagons-with-vw-inline-4-cylinder-gas-engines