Webra 1.45 problem too

[David Wartel]

Webra 1.45 problemThanks, Brian.

I just took the pump apart and found it to be squeeky clean. I triple filter
my fuel.

I'll try all of your suggestions, probably today if I get the engine reinstalled in time.

What I don't understand is why the engine died immediately at high throttle
with the nose up. It ran perfectly with the plane level. Could this be a
pump problem? I couldn't find anything unusual inside it. The diaphragms
look fine and it is clean.

I'll turn the adjustment screw out a half turn and fiddle with the needles
again.

Thanks again, Dave

----- Original Message ----- 
From: "Brian Young" <b4598070 at yahoo.com>
To: <d.wartel at comcast.net>
Sent: Sunday, July 25, 2004 8:51 AM
Subject: Re: Webra 1.45 problem too


> Keith has given you a lot of good tips. Your setup is
> fine and will work. I have ran these for several
> years. When the engine coughs and spits on throttle up
> it is rich on the bottom end and in some cases can be
> corrected by leaning the low speed needle. If you cant
> get it lean enough on the low speed needle reduce the
> pump pressure by screwing out the pump regulator by up
> to 1/2 turn at a time.
> If the engine dies after a rollout from a maneuver
> coming off of idle and it is just dead, like you
> turned off the switch, thats dieing lean. Richen the
> low end needle.
>
> If you are unsure try one direction paying attention
> to what you changed until the problem goes away or
> gets worse. If it gets worse try the needle the other
> way.
>
> If the problem is inconsistant, or the main needle
> isnt close to 1-1/2 to 1-1/4 turn expect debris in the
> pump. Use a hanger 9 filter that is anodized aluminum
> round cylinder, the best filter I have seen.
>
> Hope you received the information you need, the engine
> will run and be reliable. If its new and you cant seem
> to get it to work send it back, dont waste a lot of
> time on it. Boca has a stainless steel sealed bearing
> for the engine that is due in october, I suggest you
> install one of these as soon as its available.
>
> Brian
> --- David Wartel <d.wartel at comcast.net> wrote:
> > Webra 1.45 problemMy problem is a little different:
> > Set-up: OS F plug, Grieve pipe (set to length on
> > Piedmont site), Powermaster 15%, 16x10 APC prop.
> > Have about 1.5 - 2 gallons of fuel through it so
> > far, so it's still breaking in. Regular, not MC,
> > carb.
> >
> > After a lot of fiddling, I got the engine running
> > very well on the ground. It would idle well and
> > transition instantly after idling for 20-30 seconds.
> > At takeoff the engine would surge and threaten to
> > quit. Since the engine did this in a nose-up
> > attitude, we ran it up to full throttle on the
> > ground and held the nose up. The engine quit
> > instantly.
> >
> > I detached the fuel line to the carb and put the
> > starter to it and fuel came out in irregular spurts.
> > I don't know how the fuel should be coming out, like
> > this or in a steady stream??
> >
> > The few times I did get the plane to fly, the engine
> > would bog down in about the 3rd quarter of the
> > outside loop and nearly quit.
> >
> > The fuel lines have been checked. The clunk is
> > 1/4-1/2 inch from the back of  the tank. I have a
> > brass tube installed in the pickup line so it can't
> > fold forward.
> >
> > I plan to disassemble the pump and check for debris,
> > but would very much welcome any other suggestions.
> >
> > Thank you, Dave
> >
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