Outboard engine help please!!
 

Hi, I just recently rebuilt the 3 carbs and put new plugs in my 1999
Johnson 60horse on my 17' Montauk.
I can get the throttle about 3/4 the way forward and then in
just bogs down. What I just notice today though, is that I can push
the throttle all the way up and then, intermitently push the choke and
get full speed and smooth running out of it!
I'm thinking that the throttle is giving more air than gas and that
might explain why the additional choking helps? I'm no mechanic, so I
may be way off, could it be the other way around? Once I know whether
it needs more air, or more gas, how would I adjust this? Is it the 2
cables coming into the motor that go to the plates? 1 must be air,
another gas....
Any help is greatly appreciated! It seems like the engine is only a
small adjustment away from being great and I just bought the boat, so
I'm looking foward to having it running well soon!

Outboard engine help please!!
 

Also wondering lately, what might I expect to pay for a routine tuneup
and oilchange? I'd do the oil myself, but the Lower unit screw won't
even budge...

Outboard engine help please!!
 

Just wanted to add... I'm not completely sure what the adjustments on
the crabs are yet. I have a very small brass screw at the top and a
steel screw below it ( slow speed needle?) I have the steel screw
backed out 2 turns and the brass ones on tight.. When I bought the
motor everything was messed up, so I'm not sure how to adjust these.
BTW, what might I expect to pay for a routine tuneup and oilchange?
I'd do the oil myself, but the Lower unit screw won't
even budge...

Outboard engine help please!!
 

Just wanted to add... I'm not completely sure what the adjustments on
the carbs are yet. I have a very small brass screw at the top and a
steel screw below it ( slow speed needle?) I have the steel screw
backed out 2 turns and the brass ones on tight.. When I bought the
motor everything was messed up, so I'm not sure how to adjust these.
BTW, what might I expect to pay for a routine tuneup and oilchange?
I'd do the oil myself, but the Lower unit screw won't
even budge...

Outboard engine help please!!
 

On May 24, 5:39 pm, wrote:
Hi, I just recently rebuilt the 3 carbs and put new plugs in my 1999
Johnson 60horse on my 17' Montauk.
I can get the throttle about 3/4 the way forward and then in
just bogs down. What I just notice today though, is that I can push
the throttle all the way up and then, intermitently push the choke and
get full speed and smooth running out of it!
I'm thinking that the throttle is giving more air than gas and that
might explain why the additional choking helps? I'm no mechanic, so I
may be way off, could it be the other way around? Once I know whether
it needs more air, or more gas, how would I adjust this? Is it the 2
cables coming into the motor that go to the plates? 1 must be air,
another gas....
Any help is greatly appreciated! It seems like the engine is only a
small adjustment away from being great and I just bought the boat, so
I'm looking foward to having it running well soon!

Sounds like it is starving for fuel, check the lines, pump, filter,
filter, filter and make sure you put everything together correctly,
timing is right, advance, etc... But it sounds like the first thing I
would check is fuel delivery.

Outboard engine help please!!
 

wrote in message
oups.com...
Hi, I just recently rebuilt the 3 carbs and put new plugs in my 1999
Johnson 60horse on my 17' Montauk.
I can get the throttle about 3/4 the way forward and then in
just bogs down. What I just notice today though, is that I can push
the throttle all the way up and then, intermitently push the choke and
get full speed and smooth running out of it!


Did you replace the gaskets or re-use them? The small 1/2" dia. gasket that
goes around the high speed nozzle is very important and if leaking air or
not installed, the motor will have the same symptoms that you describe.

By hitting the "choke" you are opening an electric valve that allows raw
fuel into the intake. Since the motor then increases power, that means that
your carbs are not delivering enough fuel for some reason. What did you set
the float adjustment at?

Outboard engine help please!!
 

I used 3 rebuild kits, replaced all gaskets, floats, float needles,
springs... I just notice that the 2nd cable off the throttle into the
motor is only for reverse anyway. So this is fixed high speed I guess.
I'll have to open the carbs up again and check the float distance,
they may be too far. The kit said 3/4" between gasket and float, but
the engine book says 1 1/8 between gasket and top of float. I may be
1/4" too much, would that make such a big difference?
BTW, after looking through this group archives, I found the tip about
heating the lower unit around the oil screws... Took 15 minutes total
for the job and now my oil is changed! No water came out.
I'll take it out tomorrow and fine tune the slow speed needle, I also
noticed that the steel pin which moves the entire 3 carb assembly was
1/2" away from the black plastic plate that engages it with the
throttle. This must be why I have some travel before I finally get
moving... I loosened the screw and adjusted slightly to test it for
now. I'm using a 50/1 mix but some seem to use 20/1 which would you
recommend? It's a 60Horse Johnson. Thanks for the help!

Outboard engine help please!!
 

Outboard engine help please!!
 

This morning I opened up the fuel pump and cleaned it. It was very
yellow inside! Immediately out on the water, I saw a difference, when
pushing the throttle up, it still bogged, but then came up and stayed
up to full speed! I think it's safe now to say that the fuel pump is
the issue. I ran it for 2 hrs today and it's the best it's been yet!
Now I'm not sure how to finally fix this, a fuel pump rebuild, or a
new one all together? I may start with a new fuel filter incase that
is coming into play somehow. Should I stick with 50 to 1 nix? I was
using wlamart 2 cycle, but just picked up a case of Valvoline... Read
that cheap 2 cycle will foul up more.

Outboard engine help please!!
 

On May 25, 3:49 pm, wrote:
This morning I opened up the fuel pump and cleaned it. It was very
yellow inside! Immediately out on the water, I saw a difference, when
pushing the throttle up, it still bogged, but then came up and stayed
up to full speed! I think it's safe now to say that the fuel pump is
the issue. I ran it for 2 hrs today and it's the best it's been yet!
Now I'm not sure how to finally fix this, a fuel pump rebuild, or a
new one all together? I may start with a new fuel filter incase that
is coming into play somehow. Should I stick with 50 to 1 nix? I was
using wlamart 2 cycle, but just picked up a case of Valvoline... Read
that cheap 2 cycle will foul up more.

Don't worry yet about fouling up more, let's get you foulded up less
first ;)
anyway, you have put enough into this so far, just finish the job and
be done with it. Get a new pump and filter, and put em' on. Don't
skimp now after all that work and money, finish the job and go out on
the water with confidence. Just my opinion.

Outboard engine help please!!
 

Yes, I'll be replacing it as soon as I can find one! I'm looking
online but can't come across one yet! It's a 1999 Johnson 60 Horse,
fuel pump has a metal plate on front where it attaches to engine.
I'm pretty sure a new one will be the key to getting the preformance
up to 100%.

Outboard engine help please!!
 

So now more confusion.... I came up with part number 5004558 for my
fuel pump. That means it's a VRO pump? But my engine is 2cycle and I
mix my gas and oil 50/1. Is my fuel pump also mixing oil? That would
be news to me and I don't even know where the oil goes! Also, looks
like the new unit is $300, I'll give another week of test runs, it's
getting better every day, so maybe it'll work itself out.

Outboard engine help please!!
 

On May 26, 12:42 am, wrote:
So now more confusion.... I came up with part number 5004558 for my
fuel pump. That means it's a VRO pump? But my engine is 2cycle and I
mix my gas and oil 50/1. Is my fuel pump also mixing oil? That would
be news to me and I don't even know where the oil goes! Also, looks
like the new unit is $300, I'll give another week of test runs, it's
getting better every day, so maybe it'll work itself out.

Well, that's about where I get off. More than I can help you with,
hopefully someone will jump in here.

Outboard engine help please!!
 

wrote in message
ups.com...
So now more confusion.... I came up with part number 5004558 for my
fuel pump. That means it's a VRO pump? But my engine is 2cycle and I
mix my gas and oil 50/1. Is my fuel pump also mixing oil? That would
be news to me and I don't even know where the oil goes! Also, looks
like the new unit is $300, I'll give another week of test runs, it's
getting better every day, so maybe it'll work itself out.

Only if it has an oil tank. Mine has a small oil tank sitting near the gas
tank. However, I read on these newsgroups that many people, either have
trouble with that concept or don't trust it and simply disconnect it and mix
the oil/gas in the gas tank. That sounds like what has happened in your
case. My 60hp acted just like yours last Summer and since I only took it
away from the dock twice, I never got around to fixing it. Therefore, I
read this thread with much interest.
I had disconnected the controls to redeck the pontoon boat and was thinking
that I had perhaps connected up something wrong. I wonder if it's possible
to reverse the forward and reverse throttle controls. I didn't realize that
they were separate....don't know why I didn't realize that both cables were
throttle.

Tom G