Gas has been seeping into my oil. I took the advice of several here and
installed a new float. The old float was some plastic looking composite
material, I assumed that it may be absorbing gas. I replaced it with a
brass float and adjusted it to 1/4". The exact adjustment for my carb I
was unsure since the numbers on my carb did not match up to anything I
could find on the net (MCM 260/270 1347-8292). The 1/4" was the
recommended setting for the majority of Rochester Quadrajets listed.
After installing carb I noted that a problem I had with starting had
disappeared. When ever I would attempt to start my boat after setting
overnight, the boat would start and then immediately die. I would then
pump the throttle once and it would start and then run great. Now it
starts without stalling. I took this as a good sign and figured I
probably had solved the gas in oil problem. Wrong! After running the
boat 5 trips of 12 miles I was disheartened to see the oil level up by
about a quart of gas.

I am now going to change the fuel pump again, in the chance that the pump
I installed last winter is defective. If that dosn't do it I will go
back to the carb. Any thoughts as to what else I could do? I was
wondering if perhaps the float needle could be defective? Other Than the
gas in oil, the engine runs perfect. Any Ideas?

Thanks, Mr Ranger

Only way I know is for the fuel pump to be bad.

--
Tony
my boats at http://t.thomas.home.mchsi.com

"Mr Ranger" wrote in message
...
Gas has been seeping into my oil. I took the advice of several here and
installed a new float. The old float was some plastic looking composite
material, I assumed that it may be absorbing gas. I replaced it with a
brass float and adjusted it to 1/4". The exact adjustment for my carb I
was unsure since the numbers on my carb did not match up to anything I
could find on the net (MCM 260/270 1347-8292). The 1/4" was the
recommended setting for the majority of Rochester Quadrajets listed.
After installing carb I noted that a problem I had with starting had
disappeared. When ever I would attempt to start my boat after setting
overnight, the boat would start and then immediately die. I would then
pump the throttle once and it would start and then run great. Now it
starts without stalling. I took this as a good sign and figured I
probably had solved the gas in oil problem. Wrong! After running the
boat 5 trips of 12 miles I was disheartened to see the oil level up by
about a quart of gas.

I am now going to change the fuel pump again, in the chance that the pump
I installed last winter is defective. If that dosn't do it I will go
back to the carb. Any thoughts as to what else I could do? I was
wondering if perhaps the float needle could be defective? Other Than the
gas in oil, the engine runs perfect. Any Ideas?

Thanks, Mr Ranger

That's a lot of gas has to be the fuel pump. You would notice bad engine
performance if that much was getting past the rings.
Don't some marine fuel pumps come with 2 diaphragms with a sight glass
between the two so you can see if there is a leak. Are you sure you are
using a marine pump?

"Tony Thomas" wrote in message
news:LpTUc.323287$JR4.29812@attbi_s54...
Only way I know is for the fuel pump to be bad.

--
Tony
my boats at http://t.thomas.home.mchsi.com

"Mr Ranger" wrote in message
...
Gas has been seeping into my oil. I took the advice of several here and
installed a new float. The old float was some plastic looking composite
material, I assumed that it may be absorbing gas. I replaced it with a
brass float and adjusted it to 1/4". The exact adjustment for my carb I
was unsure since the numbers on my carb did not match up to anything I
could find on the net (MCM 260/270 1347-8292). The 1/4" was the
recommended setting for the majority of Rochester Quadrajets listed.
After installing carb I noted that a problem I had with starting had
disappeared. When ever I would attempt to start my boat after setting
overnight, the boat would start and then immediately die. I would then
pump the throttle once and it would start and then run great. Now it
starts without stalling. I took this as a good sign and figured I
probably had solved the gas in oil problem. Wrong! After running the
boat 5 trips of 12 miles I was disheartened to see the oil level up by
about a quart of gas.

I am now going to change the fuel pump again, in the chance that the
pump
I installed last winter is defective. If that dosn't do it I will go
back to the carb. Any thoughts as to what else I could do? I was
wondering if perhaps the float needle could be defective? Other Than
the
gas in oil, the engine runs perfect. Any Ideas?

Thanks, Mr Ranger

Thanks Calhoun, You would think manufactures would make it easier to
pick the proper replacement parts. On the pump there is no identifiable
marks at all. I was able to find the correct pump by comparing pictures
on the net. It is a carter for a 350 Merc. I did notice that different
pumps had the window you speak of, however this one does not. I did not
see any others for my engine that would fit, so I assume I have the right
pump. I plan on changing it tomorrow. Is there any way to look at the
one I take off and tell if it is bad?

Thanks, Mr Ranger



"calhoun" wrote in
:

That's a lot of gas has to be the fuel pump. You would notice bad
engine performance if that much was getting past the rings.
Don't some marine fuel pumps come with 2 diaphragms with a sight glass
between the two so you can see if there is a leak. Are you sure you
are using a marine pump?

"Mr Ranger" wrote in message
...
Thanks Calhoun, You would think manufactures would make it easier to
pick the proper replacement parts. On the pump there is no identifiable
marks at all. I was able to find the correct pump by comparing pictures
on the net. It is a carter for a 350 Merc. I did notice that different
pumps had the window you speak of, however this one does not. I did not
see any others for my engine that would fit, so I assume I have the right
pump. I plan on changing it tomorrow. Is there any way to look at the
one I take off and tell if it is bad?

Thanks, Mr Ranger



"calhoun" wrote in
:

That's a lot of gas has to be the fuel pump. You would notice bad
engine performance if that much was getting past the rings.
Don't some marine fuel pumps come with 2 diaphragms with a sight glass
between the two so you can see if there is a leak. Are you sure you
are using a marine pump?



When you take it off, leave the fuel lines hooked up and work the actuator
arm. See of fuel is squirted from the mounting area cavity. Marine pumps
have line from the vent hole on top of the pump to the carb / spark
arrestor. That way, if the diaphragm ruptures on the top, instead of the
gas flowing out to the bilge, it goes to the carb.

"Mr Ranger" wrote in message
...

[snip]


I am now going to change the fuel pump again, in the chance that the pump
I installed last winter is defective. If that dosn't do it I will go
back to the carb. Any thoughts as to what else I could do? I was
wondering if perhaps the float needle could be defective? Other Than the
gas in oil, the engine runs perfect. Any Ideas?

Thanks, Mr Ranger

If youre going to change the fuel pump, you might want to consider replacing
it with an electric unit.

Not only is it safer, it would totaly eliminate the pump from your problem.

Have you done a compression test?

--
-Netsock

"It's just about going fast...that's all..."
http://home.insight.rr.com/cgreen/

"Calif Bill" wrote in message link.net...
"Mr Ranger" wrote in message
...
Thanks Calhoun, You would think manufactures would make it easier to
pick the proper replacement parts. On the pump there is no identifiable
marks at all. I was able to find the correct pump by comparing pictures
on the net. It is a carter for a 350 Merc. I did notice that different
pumps had the window you speak of, however this one does not. I did not
see any others for my engine that would fit, so I assume I have the right
pump. I plan on changing it tomorrow. Is there any way to look at the
one I take off and tell if it is bad?

Thanks, Mr Ranger



"calhoun" wrote in
:

That's a lot of gas has to be the fuel pump. You would notice bad
engine performance if that much was getting past the rings.
Don't some marine fuel pumps come with 2 diaphragms with a sight glass
between the two so you can see if there is a leak. Are you sure you
are using a marine pump?



When you take it off, leave the fuel lines hooked up and work the actuator
arm. See of fuel is squirted from the mounting area cavity. Marine pumps
have line from the vent hole on top of the pump to the carb / spark
arrestor. That way, if the diaphragm ruptures on the top, instead of the
gas flowing out to the bilge, it goes to the carb.

Since the writer stated that he took 5 trips of twelve miles, and the
oil level went up one quart, you'd never be able to see gas "squirt"
from the cavity by working the lever manually. If he averaged 30 miles
per hour, that would be two hours of running, at let's say 3500 R.P.M.
Since the fuel pump must pump at least once each revolution, that
means the lever is actuated some 420,000 times. That would result in
..00000238 quarts per action, or .00007619 ounces per each stroke. That
would most likely be imperceptive using your method.

"basskisser" wrote in message
om...
"Calif Bill" wrote in message
link.net...
"Mr Ranger" wrote in message
...
Thanks Calhoun, You would think manufactures would make it easier to
pick the proper replacement parts. On the pump there is no
identifiable
marks at all. I was able to find the correct pump by comparing
pictures
on the net. It is a carter for a 350 Merc. I did notice that
different
pumps had the window you speak of, however this one does not. I did
not
see any others for my engine that would fit, so I assume I have the
right
pump. I plan on changing it tomorrow. Is there any way to look at
the
one I take off and tell if it is bad?

Thanks, Mr Ranger



"calhoun" wrote in
:

That's a lot of gas has to be the fuel pump. You would notice bad
engine performance if that much was getting past the rings.
Don't some marine fuel pumps come with 2 diaphragms with a sight
glass
between the two so you can see if there is a leak. Are you sure you
are using a marine pump?



When you take it off, leave the fuel lines hooked up and work the
actuator
arm. See of fuel is squirted from the mounting area cavity. Marine
pumps
have line from the vent hole on top of the pump to the carb / spark
arrestor. That way, if the diaphragm ruptures on the top, instead of
the
gas flowing out to the bilge, it goes to the carb.

Since the writer stated that he took 5 trips of twelve miles, and the
oil level went up one quart, you'd never be able to see gas "squirt"
from the cavity by working the lever manually. If he averaged 30 miles
per hour, that would be two hours of running, at let's say 3500 R.P.M.
Since the fuel pump must pump at least once each revolution, that
means the lever is actuated some 420,000 times. That would result in
.00000238 quarts per action, or .00007619 ounces per each stroke. That
would most likely be imperceptive using your method.