Re: 63 Imperial - Edelbrock AVS2 Choke issue/Fuel system/ analysis progress

[<62-65-mail-list-club@xxxxxxxxxxx>]

Thanks for the report. Great detective work Sherman! One of the most frustrating things is putting on a new part and 
still having the performance problem, pulling your hair out, then later discovering the new part you installed was 
defective. :/ 

Gary H. 

>  -------Original Message-------
>  From: Sherman D Taffel  
>  
>  Sharing this now as got a message asking if there was followup to my
>  post of 3 days ago. Never saw that before.
>  Also posting in case another list member discovers similar Choke
>  problem.
>  - - -
>  Did pull Carb - & after looking at every mechanical mechanism
>  discovered why choke binding & not fully opening.
>  
>  Removed top of carb. Choke moved fully. Problem was NOT with the
>  choke bithermal winding / container or linkage on that side of carb.
>  
>  Problem was caused by the the linkage rod/ Fast Cam & linkage rod on
>  the Drivers side. These parts are NOT relatated at all to the
>  Accelerator Pump arm, linkage and butterfly / throttle cam.
>  
>  Looking at pics of Edelbrock 1400 series & the 1900 series, found that
>  the Choke linkage rid from the Fast Idle cam was 'Locking up'. Seems
>  the plate, BOTTOM CAM (Fast idle cam) was installed reversed. I never
>  messed with that before. New guy at Factory Mistake?
>  Anyway, Now fixed!
>  
>  Choke opens fully. Did move accelerator pump arm linkage to top hole
>  so accelerator pump will activate 'sooner'.. Will see if that helps
>  (prevents) the hesitation upon acceleration.
>  
>  Will reinstall carb either later tonight or tomorrow.
>  
>  To be Continued.
>  
>  On Tue, May 3, 2022, 8:02 PM Sherman D Taffel <staffel1945@xxxxxxxxx>
>  wrote:
>  
>  > Float sealed & All back together . Fuel Gauge reading normally.
>  > Added 'huge Jaguar V12 Mann fuel filter between steel line and
>  > mechanical pump & K&N seethru filter above valve cover before line
>  > feeds New Edelbrock AVS2 carb.
>  >
>  > New Mechanical pump sucked gas with 6 rounds of cranking and looked
>  > for 'weeps' at connections as K&N fuel filter filled. All good.
>  >
>  > This past winter's Polar Fridge DID NOT damage Ignition module ( as
>  > did previous two winters) and The Mighty 413 attempted to fire. Few
>  > more cranking rounds & squirt of starter fluid & the engine began to
>  > Purr.
>  >
>  > However, the New carb is demonstrating ' hesitation' & engine
>  > stalling upon 'throttle release'. Also discovered the (Electric)
>  > Choke is not opening properly (suspect mechanical issue). So
>  > disconnected the winding & found mechanically the choke is not
>  > opening as it should.
>  >
>  > Is something mechanical inside binding - that's the ? Now.
>  >
>  > So- am starting from 'scratch' with idle mixture screws 'resetting',
>  > looking at accelerator pump adjustment options & seeing what is
>  > preventing choke from properly opening to vertical.
>  >
>  > My suspicion is after running Engine very fast (suspect @3000rpm
>  > -hand opening throttle) and letting spring close butterflys, the not
>  > fully opened choke plate is 'flooding' engine and stalls it out. It
>  > immediately restarts (using remote button starter right at engine).
>  >
>  > Year ago with all these unknown ignition & fuel supply issues (?s)
>  > bought New AVS2 1906 Edelbrock replacing late 90s 1400 series.
>  >
>  > Previously ( Last Fall) got authorization from JEGS/ Edelbrock to
>  > open new carb & found carb bowl not filling properly explaining why
>  > accelerator pump wasn't working & engine would only purr at idle.
>  > (Replaced fuel pump and decided to examine fuel pickup & known issue
>  > with sending unit, and the tank with digital camera. 39,187 original
>  > miles.
>  >
>  > Nothing seems to work right 'NEW' anymore.
>  >
>  > The old not joke if N0S (New Old Stock) vs NEW- Never Ever Worked.
>  >
>  > But hope to sort it out this week.
>  >
>  > As shared, engine & Bay totally detailed. Repainted & 'A Joy to
>  > View' so hoping these final efforts will finally pay off.
>  >
>  > Will share what I find.
>  >
>  > With no rain today & roof dry, Had to examine & make some roof/
>  > flashing repairs today. Gave me oppo6to take a break & reflect on
>  > the status.
>  >
>  > Know I might have to pull carb & open it up again. Did use Hylomar
>  > on the intake manifold gasket, so should pull off easily. Will pay
>  > close attention to the choke linkages connections and interactions
>  > with fast idle cam, choke winding cover link rod- etc.
>  > AVS slightly different linkages rods than the Performer series.
>  >
>  > I'm a MOPAR Guy from my 1956 teenage years, but ironically I have a
>  > 62 Buick Skylark with the 315 cu in Aluminum Hi performance V8 which
>  > has its ORIGINAL Rochester 4GC carburetor. I have almost solved the
>  > well known, well documented left turn stalling issue. No head gasket
>  > issues so many have had with these early GM Aluminum engines. The
>  > engine ALWAYS Fires right up and runs beautifully and it has NEVER
>  > been apart- 116,000miles.
>  >
>  > The ironies of our Afflictions of enjoying our early 60s Automotive
>  > experiences.
>  >
>  > Sherman D Taffel
>  > Columbia MD
>  >
>  > On Tue, May 3, 2022, 6:39 PM Michael <493mike@xxxxxxxxx> wrote:
>  >
>  > When draining brass floats put hole on bottom and blow compressed
>  > air across the hole. It creates a low pressure area which pulls the
>  > fuel right out.
>  >
>  > Mike
>  >
>  > On 4/30/2022 10:50 AM, Sherman D Taffel wrote:
>  >
>  > I've been working on 63 Imperial for quite awhile: ignition module,
>  > carb replacement, fuel delivery issues, total engine & bay
>  > 'refurbishment '.
>  >
>  > Finally got that locking ring free. Was about to use Dremel but
>  > tried prying up outer ring lip & ring (one slot allowed). After an
>  > hour. Finally got it.
>  >
>  > Drained 9 gallons & then still measured 3" in tank with digital
>  > inspection camera. Pulled sending unit & screen pickup.
>  > Digital camera revealed monimal Tank bottom rust compared to 61
>  > Lancer. 63 DART & Fiero.
>  > Had no blockage with elec Pump draining thru gas line at Front of
>  > Engine. Pickup screen had absolutely NO Clogging, totally clean.
>  >
>  > Tested sending unit. Got 9.9ohms to 60 ohms- smooth increases &
>  > decreases all the way. So why no fuel gauge readings except E?
>  >
>  > Pulled brass float off C retaining wire. Cleaned it up. shook it.
>  >
>  > AHAH- Filled with fuel.
>  > Next was to find the pinhole.
>  >
>  > Watched where fuel made float 'wet'..
>  >
>  > Took digital pics. Expanded pics. Found crack- not along solder seam
>  > but perdindicular in C recess where wire holds float. Quite a crack
>  > under 10x pic expansion.
>  > Usually on brass floats pinhole is in solder joint. Let float drain
>  > overnight. Will solder the crack. Should solve fuel gauge Ops. (
>  > Gauge read full when blue wire grounded, nothing wrong with gauge.
>  >
>  > So, all in all, very good news.
>  >
>  > Even using pillows. Lifting head to work under/ hands over
>  > Differential to access tank locking ring was not easy.. Life at 77
>  > going on 38.
>  >
>  > Carlisle looking more feasible!
>  >
>  > Sherman D Taffel
>  > 63 Crown Southhampton
>  > Columbia MD
>  >
>  > --
>  > --
>  > -- 

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