It sounds like the head (or block) has a very small, hairline crack between
a cylinder and the water jacket. The expansion at higher RPMs (increased
heat) will allow water to leak into the cylinders, but stops almost
immediately as the engine cools a few degrees when you allow it to idle.
(Been there)
Bob W.
----------
> From: Larry Miller <millerls@ado13.com>
> To: Spridgets <spridgets@autox.team.net>
> Subject: Constant Speed Sputter
> Date: Friday, April 16, 1999 11:51 AM
>
> I have posed this puzzle to the list before but since we have a lot of
new
> people I thought I would try it again.
>
> The engine in my Bugeye runs great 99% of the time. When driving at a
> constant speed in 4th or 5th above about 3500 RPM it will occasionally
start
> to sputter real bad.
>
> If I let off the throttle, press the clutch, and let to RPM's drop to
idle,
> the miss goes away. No other action will make it stop. I've tried less
> throttle, more throttle, etc. and it just keeps sputtering until I let it
go
> to idle.
>
> This happens randomly but always under the same conditions. It never
happens
> around town in stop and go driving, only on the open road. Some times
after
> a mile or so, some times after 20 or 30 miles, some times never.
>
> This engine has been in two different cars with different fuel and wiring
> systems.
>
> One car has a new gas tank with all new 1/4" gas lines and the other has
a
> "renu" gas tank with all new 5/16" gas lines.
>
> The following components have been installed in just about every possible
> combination:
>
> 1. Three different carburetor and manifold setups, 1.25 SU's, Weber DGV
> downdraft, and Weber 40 DCOE.
>
> 2. Two different distributors, a stock vacuum advance and an Aldon Yellow
> centrifugal advance.
>
> 3. Three different fuel pumps with and without a fuel pressure regulator
at
> various pressure settings.
>
> 4. Three different coils, a stock Lucas coil with external ballast, a hot
> Crane coil with external ballast, and a Lucas
> sport coil.
>
> 5. Various types of plugs, plug wires, points, distributor caps, rotors,
> etc.
>
>
>
>
>
> Larry Miller "A Fool (For LBC's) And His Money Are Soon Parted"
> 59 Bugeye (Being Ripped Apart)
> 60 Bugeye (Willie Nelson)
> 78 911 SC Targa (Faster than a Bugeye but not as much fun)
> Home Page http://ado13.com
> Spridget List Member Input Form http://ado13.com/listinfo.html
> Spridget List Member Info Page
http://ado13.com/list/email/files/list.htm
>
>
>
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