Rick,
I have a pressure regulator on mine, it's set to 1.5 lbs. Try this out, you
may be blowing the valve open with 4 psi.
N.A. Campiglia
Abilene TX
http://camalott.com/~spitdrvr
-----Original Message-----
From: Rick Gregory <rick_gregory@yahoo.com>
To: spitfires@autox.team.net <spitfires@autox.team.net>
Date: Tuesday, February 16, 1999 9:23 PM
Subject: Trouble with Weber DGAV Carb.
>
>Hi all,
>
>I've finally reached the point where I can start driving my '77 Spit
>1500 but a problem has come up on only the second day.
>
>I had the car idling flawlessly at 600 rpms for the first day. Man I
>tell you it was running so smooth and quite when I would kick into
>nuetral from 4th (when stopping like approaching a light) I would have
>to look down at the tach. so I could tell the engine was still
>running. Now, unfortunately, when I look down, the ignition light is
>on because the engine stalls.
>
>Here's what some checking has produced:
>
>1. I can't find an electrical problem (spark is good) and of course,
>compression is great on the newly rebuilt engine -so-
>
>2. I'm thinking fuel... I checked the fuel pump (which is electric in
>the trunk). I hooked it up to a gauge... 4 lbs constant pressure.
>
>Is four pounds fuel pressure okay?
>
>3. I checked the carb. This is where I think the problem is. I pulled
>the air cleaner and looked down inside... Fuel is being dumped into
>the intake (at idle) and it appears is flooding/fouling out the
>engine. I opened up the carb's bowl compartment and reset the float
>assembly (the float "level"). I ALSO INSTALLED A NEW INLINE FILTER
>into the fuel line before the carb. I also checked the little screen
>filter in the fuel inlet of the carb itself. It seemed clean. Next, I
>reassembled the carb and started the motor. It ran fantastic again,
>like before. I looked down inside the carb and it was dry, no fuel
>dumping! I then took it for a ride around the block. It ran great. I
>took it out on a main road and accelerated up to 45 mph... when I came
>to the next stop boom--> stalled again. It ran sick all the way back
>to the garage. I removed the air filter and looked and sure enough,
>excess fuel dumping again.
>
>What do you guys think? Dirt getting inside even though I installed a
>new filter? Bad float? (It is brass and is not leaking).
>
>Okay, at the risk of being lengthy how about this:
>
>I checked my back room and discovered another weber carb (DGAV 5E)
>which a guy gave me after cleaning out his garage... it was very
>similar the carb which came with my spit. I removed its float and
>needle assembly and installed them in my carb (they fit perfectly).
>(This was a plastic float) I set the new "plastic" float level and
>re-installed in my car... SAME PROBLEM! Fuel dumping! I even
>re-assembled the other carb enough to mount it on the spit and tried
>it! SAME PROBLEM on the whole new carb--still excess fuel. I finally
>gave up and re-installed the original carb.
>
>The only thing I can think of is dirt or fuel pump. I did, just prior
>to installing my rebuilt carb, flush out the fuel lines. I pumped the
>tank dry. Then I filled it with new gas... then pumped the lines until
>the new gas came out. (I never pulled the tank). And tonight, like I
>said above, I installed a new inline filter...
>
>Any ideas guys?
>
>--Rick
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