<VV> Carter YH rich running FIXED

[Duane, Jim E.]

I all.

The 180 is back to normal.  The test drive went well.  The idle mix screw was back to "around" 3/4 to 1 turn from seated.  Smooth power delivery, good boost.  Aside from the choke plate sticking in the full open position, all is well.  Accel pump?  Broken choke tang?  Just a teardown/re-build? 

'VAIR on!

Jim Duane
'66 180 Corsa CVT
Colonial Corvairs
CORSA 

-----Original Message-----
From: Duane, Jim E. 
Sent: Friday, June 12, 2009 10:38 AM
To: 'Carlton Smith'; virtualvairs at corvair.org
Subject: Carter YH rich running UPDATE DOH!

Hi Carlton and VV land.

The carb was mounted and I finished the installation last night.  I temporarily repaired the choke spring fork by bending up a heavy duty paperclip to the remaining tang. I was ready to start 'er up last night but it was raining here in MA.  It took longer to assemble than I thought.  While I was adjusting the float I found out it was half full of gas!  A little explanation.  
	I had a leaking float 3 or so years ago.  I put a small hole in the bottom of the float to remove the gas, dried it out, re-soldered the perimeter, and soldered over the hole.  
	When the carb first started messing up a couple of weeks ago I removed the lid. I always doubt myself and decided to open up that hole in the float to see if there was any fuel in it.  Nope!  So I re-soldered the hole and apparently left a small spot that allowed fuel in.  DOH!
	Sooo, maybe I created a problem!  The float was emptied and re-soldered yesterday using an eyepiece to look for pinholes.  New accel pump in.  Before I start it up (hopefully tonight) I will heed Grant's warning on the wrong pump and check mine.  I got it from Clarks so I feel I got the right one. 

JED


Duane,

Do you have a final update yet to your YH situation? I have been reading
with great interest.


Carlton Smith
Indianapolis, IN
1965 Corsa Convt.
180 Turbo 

Hi all.

Last night I took off and totally tore down the carb.  Bottom line:  no
clogged passages/ports.  What I DID find out was that one of the two metal
"fork prongs" that holds the bi-metal choke spring was broken.
Interestingly enough, when the engine was running the choke worked
flawlessly.  While running and hot when I looked inside for dripping the
choke was fully open.   Perhaps the piece was occasionally interrupting
choke operation and jamming the plate?  Tonight I will replace the accel
pump diaphragm, re-assemble, put the float back to 5/8" and put it back on.
Weather and time permitting, I will warm it up, twist the choke housing to
make sure the plate stays open, and see what happens!

Jim Duane