Yanmar 18hp problems

Archives
1

Posted by methomp (methomp@…>)

Motored for 15 hours, no problems. Started the motor several times in
the slip after that. Took the family out and it acted like it ran out
of gas. Any ideas? I think maybe a filter, but I am not really sure
how to clean it or maybe how to bleed the air out of the lines. I have
the owners manual, but not a service manual. Help…

2

Posted by David G. Evans (dgevans@…>)

Sounds like dirt in the tank, clogging up the big “primary” external filter.
It will be some kind of spin-on unit. I had a Racor on Jabberwocky, although
it looked to have come with a Fram that wasn’t really appropriate. If you
have an F-28, it should be easy to open the inspection port and mop out any
debris, especially since it seems like you may be low on fuel. I used the
vacuum tank for draining the oil sump to empty the fuel tank and get down to
the stuff floating at the bottom. (yes, I’ve been here with this problem.)
The F-30 may be harder to get at. You can just change the filter, but if you
don’t cure the source, you’ll find yourself engineless again when you least
want it to happen.
dge
----- Original Message -----
From: “methomp” <methomp@…>
To: <freedomyachts2003@yahoogroups.com>
Sent: Sunday, June 05, 2005 10:00 PM
Subject: [freedomyachts2003] Yanmar 18hp problems

\

Motored for 15 hours, no problems. Started the motor several times in
the slip after that. Took the family out and it acted like it ran out
of gas. Any ideas? I think maybe a filter, but I am not really sure
how to clean it or maybe how to bleed the air out of the lines. I have
the owners manual, but not a service manual. Help…

Yahoo! Groups Links

3

Posted by lance_ryley (lance_ryley@…>)

I had similar issues last year with my perkins. Here are some things
to check:

  1. check the racor filter.
  2. there should be an on-engine fuel filter too. If you’re lucky, it’s
    a spin-on type and is easy to change. if you’re unlucky, you own a
    Perkins.
  3. check the return line to the tank for blockages. This ended up
    being the cause of my stalling - a blockage that got past the second
    fuel filter and was causing pressure to build up and break the bleed
    on the engine.

As far as bleeding the engine, the easiest thing to do is to find your
manual lift pump, then crack the tops of the cylinders one at a time,
starting closest to the pump. open about a quarter turn and pump until
pure fuel comes out the top, then tighten back down and move to the
next. Then crank the engine. 9/10 times it’ll start right up.

Lance

— In freedomyachts2003@yahoogroups.com, “methomp” <methomp@c…>
wrote:

Motored for 15 hours, no problems. Started the motor several times in
the slip after that. Took the family out and it acted like it ran out
of gas. Any ideas? I think maybe a filter, but I am not really sure
how to clean it or maybe how to bleed the air out of the lines. I
have
the owners manual, but not a service manual. Help…

4

Posted by Jerome Weinraub (zayde@…>)

Just a suggestion. I had severe problems when I first got my F33,as someone
had put a 2 micron filter on the primary(Racor). It should be a 30 micron
filter,and the secondary,on the engine is ,as I’m told,4 microns… The 2
micron clogged up in a few hours. It is not meant to be a primary.
----- Original Message -----
From: “David G. Evans” <dgevans@…>
To: <freedomyachts2003@yahoogroups.com>
Sent: Sunday, June 05, 2005 10:13 PM
Subject: Re: [freedomyachts2003] Yanmar 18hp problems

\

Sounds like dirt in the tank, clogging up the big “primary” external
filter.
It will be some kind of spin-on unit. I had a Racor on Jabberwocky,
although
it looked to have come with a Fram that wasn’t really appropriate. If you
have an F-28, it should be easy to open the inspection port and mop out
any
debris, especially since it seems like you may be low on fuel. I used the
vacuum tank for draining the oil sump to empty the fuel tank and get down
to
the stuff floating at the bottom. (yes, I’ve been here with this problem.)
The F-30 may be harder to get at. You can just change the filter, but if
you
don’t cure the source, you’ll find yourself engineless again when you
least
want it to happen.
dge
----- Original Message -----
From: “methomp” <methomp@…>
To: <freedomyachts2003@yahoogroups.com>
Sent: Sunday, June 05, 2005 10:00 PM
Subject: [freedomyachts2003] Yanmar 18hp problems

Motored for 15 hours, no problems. Started the motor several times in
the slip after that. Took the family out and it acted like it ran out
of gas. Any ideas? I think maybe a filter, but I am not really sure
how to clean it or maybe how to bleed the air out of the lines. I have
the owners manual, but not a service manual. Help…

Yahoo! Groups Links

Yahoo! Groups Links

5

Posted by Jay T. Reed (reedjayt@…>)

Last year when I purchased my 35 Freedom, I also purchased a Yanmar repair
manual from Seloc Publications. It’s available from Amazon for $26.53.
I’ve found this very helpful as I’ve changed both fuel filters, and the
water pump impeller.

From: Jerome Weinraub <zayde@…>
Reply-To: freedomyachts2003@yahoogroups.com
To: freedomyachts2003@yahoogroups.com
Subject: Re: [freedomyachts2003] Yanmar 18hp problems
Date: Mon, 06 Jun 2005 16:29:56 -0400

Just a suggestion. I had severe problems when I first got my F33,as someone
had put a 2 micron filter on the primary(Racor). It should be a 30 micron
filter,and the secondary,on the engine is ,as I’m told,4 microns… The 2
micron clogged up in a few hours. It is not meant to be a primary.
----- Original Message -----
From: “David G. Evans” <dgevans@…>
To: <freedomyachts2003@yahoogroups.com>
Sent: Sunday, June 05, 2005 10:13 PM
Subject: Re: [freedomyachts2003] Yanmar 18hp problems

Sounds like dirt in the tank, clogging up the big “primary” external
filter.
It will be some kind of spin-on unit. I had a Racor on Jabberwocky,
although
it looked to have come with a Fram that wasn’t really appropriate. If
you
have an F-28, it should be easy to open the inspection port and mop out
any
debris, especially since it seems like you may be low on fuel. I used
the
vacuum tank for draining the oil sump to empty the fuel tank and get
down
to
the stuff floating at the bottom. (yes, I’ve been here with this
problem.)
The F-30 may be harder to get at. You can just change the filter, but if
you
don’t cure the source, you’ll find yourself engineless again when you
least
want it to happen.
dge
----- Original Message -----
From: “methomp” <methomp@…>
To: <freedomyachts2003@yahoogroups.com>
Sent: Sunday, June 05, 2005 10:00 PM
Subject: [freedomyachts2003] Yanmar 18hp problems

Motored for 15 hours, no problems. Started the motor several times in
the slip after that. Took the family out and it acted like it ran out
of gas. Any ideas? I think maybe a filter, but I am not really sure
how to clean it or maybe how to bleed the air out of the lines. I have
the owners manual, but not a service manual. Help…

Yahoo! Groups Links

Yahoo! Groups Links

6

Posted by mike cunningham (seychellois_lib@…>)

If you do not own a Yanmar 2GM20F service manual you
are missing one of the best investments you can make.
Get the parts manual also. Together they run about
$70.00. Extremely useful information that will save
you $70.00 the first time you can troubleshoot/fix a
problem yourself.

— lance_ryley <lance_ryley@…> wrote:

I had similar issues last year with my perkins. Here
are some things
to check:

  1. check the racor filter.
  2. there should be an on-engine fuel filter too. If
    you’re lucky, it’s
    a spin-on type and is easy to change. if you’re
    unlucky, you own a
    Perkins.
  3. check the return line to the tank for blockages.
    This ended up
    being the cause of my stalling - a blockage that got
    past the second
    fuel filter and was causing pressure to build up and
    break the bleed
    on the engine.

As far as bleeding the engine, the easiest thing to
do is to find your
manual lift pump, then crack the tops of the
cylinders one at a time,
starting closest to the pump. open about a quarter
turn and pump until
pure fuel comes out the top, then tighten back down
and move to the
next. Then crank the engine. 9/10 times it’ll start
right up.

Lance

— In freedomyachts2003@yahoogroups.com, “methomp”
<methomp@c…>
wrote:

Motored for 15 hours, no problems. Started the
motor several times in
the slip after that. Took the family out and it
acted like it ran out
of gas. Any ideas? I think maybe a filter, but I
am not really sure
how to clean it or maybe how to bleed the air out
of the lines. I
have
the owners manual, but not a service manual.
Help…


\

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7

Posted by Jerome Weinraub (zayde@…>)

I agree,but some info is not given. For instance,on the FW cooled Gm,the
alternator and raw water pump belt sizes are not given,only Yanmars part #.
The sizes are A 37 for the alt,and 3L 190 for the salt water pump belts. You
do need the books for service and maintenance,such as torqueing the head
bolts and valve adjustment.
----- Original Message -----
From: “mike cunningham” <seychellois_lib@…>
To: <freedomyachts2003@yahoogroups.com>
Sent: Monday, June 06, 2005 11:17 PM
Subject: Re: [freedomyachts2003] Re: Yanmar 18hp problems

\

If you do not own a Yanmar 2GM20F service manual you
are missing one of the best investments you can make.
Get the parts manual also. Together they run about
$70.00. Extremely useful information that will save
you $70.00 the first time you can troubleshoot/fix a
problem yourself.

— lance_ryley <lance_ryley@…> wrote:

I had similar issues last year with my perkins. Here
are some things
to check:

  1. check the racor filter.
  2. there should be an on-engine fuel filter too. If
    you’re lucky, it’s
    a spin-on type and is easy to change. if you’re
    unlucky, you own a
    Perkins.
  3. check the return line to the tank for blockages.
    This ended up
    being the cause of my stalling - a blockage that got
    past the second
    fuel filter and was causing pressure to build up and
    break the bleed
    on the engine.

As far as bleeding the engine, the easiest thing to
do is to find your
manual lift pump, then crack the tops of the
cylinders one at a time,
starting closest to the pump. open about a quarter
turn and pump until
pure fuel comes out the top, then tighten back down
and move to the
next. Then crank the engine. 9/10 times it’ll start
right up.

Lance

— In freedomyachts2003@yahoogroups.com, “methomp”
<methomp@c…>
wrote:

Motored for 15 hours, no problems. Started the
motor several times in
the slip after that. Took the family out and it
acted like it ran out
of gas. Any ideas? I think maybe a filter, but I
am not really sure
how to clean it or maybe how to bleed the air out
of the lines. I
have
the owners manual, but not a service manual.
Help…

Do You Yahoo!?
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http://mail.yahoo.com

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