It\'s all about two things- cracking pressure and location. The closer
to the carb, the less the dry start up. Putting the valve even six
inches away could potentially lead to several minutes of running with
no oil. This is because those six inches of line will drain into the
carb over several days time.
The cracking pressure must be greater than the oil head. It\'s easy to
calculate. Measure the vertical distance in inches from the highest
point on the oil tank to the carb oil port. Divided this by 27 to
find the minimum cracking pressure in psi. Then add to this 1/2 to 1
psi more for hysteresis.
--- In
Strada-Vento-QJ-UM-
ChineseScooters@yaho
ogroups.com, "Paul"
<
This e-mail address is being protected from spam bots, you need JavaScript enabled to view it
> wrote:
QUOTE:
Not to disagree but I found a source for inline check valves.
http://tinyurl.com/
9r22j
I don\'t see why a person just can\'t cut the oil line and put this
inline and leave the malfunctioning valve alone.
From the site>>>>
>
The 695 series is a general purpose check valve that operates in any
position, horizontal or vertical. A great low-resistance, high flow
check valve where space is limited. Available in nylon for general
purpose use and polypropylene for excellent chemical resistance,
positive seal at pressure. Maximum operating pressure of 125 psi
covers a wide range of air and fluid applications. Standard cracking
pressure 1 psi. Seal material: Buna-N. Guided stainless steel ball
and
QUOTE:
spring. 1/2" diameter.<<&
lt;<<
It would be a very easy fix, What do you think?
Paul aka Sporty
--- In Strada-Vento-QJ-UM-
ChineseScooters@yaho
ogroups.com,
"tomcas1234&
quot; <tomcas@> wrote:
QUOTE:
A leaking oil injection check valve can be repaired if the valve
is
QUOTE:
QUOTE:
integral to the carb inlet fitting. The ball seat of the valve
can
QUOTE:
QUOTE:
simply be re-coined. Just carefully pull the press fit brass
fitting
QUOTE:
QUOTE:
out of the carb body trying not to nick the sharp edges of the
hose
QUOTE:
QUOTE:
barbs. Catch the internal spring and ball bearing as the fitting
is
QUOTE:
QUOTE:
pulled from the body and note the assembly order. Ensure that the
inside of the fitting and ball are absolutely clean. Insert the
ball
QUOTE:
QUOTE:
back into the fitting and lightly tap on the ball using a hammer
and
QUOTE:
QUOTE:
soft aluminum or brass punch. The spring can be slightly
stretched
QUOTE:
QUOTE:
out if needed. This will raise the cracking pressure. Reassemble
the
QUOTE:
QUOTE:
whole fitting in the correct order. Use loctite sparingly between
the
QUOTE:
QUOTE:
press fit diameters if needed. Run a pre-mix oil and gas mixture
until proper functioning is evident by a decrease in the oil tank
level with usage.
--- In Strada-Vento-QJ-UM-
ChineseScooters@yaho
ogroups.com, "Paul"
<
onefastwienerdog@&
gt; wrote:
QUOTE:
The oil injection check valve is leaking oil into the carb, My
wifes
QUOTE:
QUOTE:
QUOTE:
Zip does the same thing, If it sits long I have to drain the
carb
QUOTE:
QUOTE:
that
QUOTE:
is full of oil and then start it, I\'m looking into getting a
inline
QUOTE:
QUOTE:
QUOTE:
valve to solve the problem,
Paul aka Sporty
--- In Strada-Vento-QJ-UM-
ChineseScooters@yaho
ogroups.com,
duy_q_bui@ wrote:
QUOTE:
Yes a lot of smoke when it start.
--------------------
--------------------
----
Duy Q. Bui
(c) 617-331-3603
-----Original Message-----
From: "Paul" <
onefastwienerdog@&
gt;
Date: Thu, 04 Oct 2007 01:27:39
To:Strada-Vento-QJ-
UM-
ChineseScooters@yaho
ogroups.com
Subject: [Strada-Vento-QJ-UM-
ChineseScooters] Re: vento wont
start
QUOTE:
QUOTE:
QUOTE:
if left for 2 or more days not used
QUOTE:
Will it smoke like crazy when it starts?
Sporty
--- In Strada-Vento-
<mailto:Strada-
Vento-QJ-UM-
ChineseScooters%
40yahoogroups.com&
gt;
QJ-UM-
ChineseScooters@yaho
ogroups.com,
QUOTE:
duy_q_bui@ wrote:
QUOTE:
How do you fix this. I have the same issue with my vento
triton. It
QUOTE:
QUOTE:
have a very hard time starting after one or two day without
starting
QUOTE:
QUOTE:
QUOTE:
--------------------
--------------------
----
Duy Q. Bui
(c) 617-331-3603
-----Original Message-----
From: "Paul" <
onefastwienerdog@&
gt;
Date: Thu, 04 Oct 2007 01:12:57
To:Strada-Vento-
<mailto:Strada-
Vento-QJ-UM-
ChineseScooters%
40yahoogroups.com&
gt;
QJ-UM-
ChineseScooters@yaho
ogroups.com
QUOTE:
QUOTE:
Subject: [Strada-Vento-QJ-UM-
ChineseScooters] Re: vento
wont
QUOTE:
QUOTE:
start
QUOTE:
QUOTE:
if left for 2 or more days not used
QUOTE:
The float valve in the bowl of carb is sticking/not
adjusted
QUOTE:
QUOTE:
right.
QUOTE:
QUOTE:
QUOTE:
Paul aka Sporty
--- In Strada-Vento-
<mailto:Strada-
Vento-QJ-UM-
ChineseScooters%
40yahoogroups.com&
gt;
QJ-UM-ChineseScoote
<mailto:QJ-UM-
ChineseScooters%
40yahoogroups.com&
gt;
This e-mail address is being protected from spam bots, you need JavaScript enabled to view it
,
QUOTE:
QUOTE:
QUOTE:
QUOTE:
QUOTE:
"matthew" <matinwi@> wrote:
QUOTE:
If I leave my vento for more that a day with out
starting it
QUOTE:
QUOTE:
I
QUOTE:
QUOTE:
have to
QUOTE:
QUOTE:
help it by using a little starting fluid ....why am I
loosing my
QUOTE:
QUOTE:
fuel
QUOTE:
QUOTE:
in the carb ??????anyone else have this problem
