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- Path: sparky!uunet!zaphod.mps.ohio-state.edu!usc!news.service.uci.edu!714-725-3178.nts.uci.edu!user
- From: bob@beamlab.ps.uci.edu (bob prohaska)
- Subject: Holley 2300 leaks internally...Fix????
- Nntp-Posting-Host: 714-725-3169.nts.uci.edu
- Message-ID: <bob-040193225554@714-725-3178.nts.uci.edu>
- Newsgroups: rec.autos.tech
- Organization: physics department
- Lines: 38
- Date: 5 Jan 93 07:52:38 GMT
- Followup-To: rec.autos.tech
-
- Hi all, is there a Holley doctor in the house?
-
- I'm plagued with a Holley 2300, list number 6386, on a '72 Scout II
- with a 345.
-
- The carb has been a source of intermittent trouble since I got the
- car. The mixture would slowly get richer, till it wasn't possible
- to lean the idle mixture. The first time this happened I rebuilt the carb
- and straightened the metering block. The car ran fine for nearly 3 years.
-
- Recently the car started running rich (though it didn't get so bad that
- I couldn't adjust the idle mixture) so I looked at the metering block and
- it
- was warped once again, by about 1 mm. I straighted both the metering block
- and the float chamber but did not rebuild the carb. After a bit of
- struggle with
- new Buna-N gaskets the car ran fine and idle adjustment was normal.
-
- After standing overnight, the car started but stalled rich.
-
- Gas could be seen trickling from the transfer slots into the barrels after
- shutdown, accompanied by a soft gurgling sound as if air were entering
- somewhere. The only evidence of external leakage was around the throttle
- shafts (I don't think the gaskets are leaking externally.)
-
- Is there some way to start a siphon from the float chamber to the
- transfer slot? The idle air bleeds are not visibly obstructed and the
- metering block looked clean. There was the usual brown mud
- in the float chamber but nothing that looked serious. In general the carb's
-
- quite clean for 40k miles.
-
- I'm reluctant to replace this carb without understanding what's wrong....
- does anybody have any ideas?
-
- thanks for reading
-
- bob prohaska
-