no start Yanmar - SailNet Community
 3Likes
Reply
 
LinkBack Thread Tools
post #1 of 54 Old 11-05-2011 Thread Starter
Junior Member
 
Join Date: Apr 2007
Posts: 24
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
no start Yanmar

I've been experiencing great frustration trying to get my Yanmar 2GM started for the past few weeks.

Just before Hurricane Irene last August, after some significant rain, I discovered that my fuel tank was covered with water. I pumped the bilge and checked the primary filter for water in the fuel. Finding none, I started it up. The engine started fine and I still noticed no water in the primary filter. I did remove the top cover of the primary filter as I motored up the river to Liberty Marina because I was worried about the possibility of water getting into the engine. Then I feared that I may have introduced air into the fuel line

The motor ran fine for about an hour, but after shutting down, it was hard to start. When it did start I noticed black smoke in the exhaust and the prop complained when I put the boat in gear.. I shut it down and ended up pulling the boat for the season. I've been unable to start it since.

I have bled the system up to the fuel injectors, but still no luck. The engine cranks, seems to fire, but wont run on its own. I've charged the four year old batteries and had them tested. They seem to test OK.

Any ideas as to what to check next?
rchad is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 54 Old 11-05-2011
Senior Member
 
Join Date: Feb 2002
Location: New Jersey
Posts: 174
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 14
 
Send a message via AIM to HPLou
There is a good chance that there still is some air in the line. I would first try to bleed the system again. The black smoke could be the engine was firing on one cylinder.
HPLou is offline  
Quote Quick Reply Share with Facebook
post #3 of 54 Old 11-06-2011
Senior in age only!!!
 
centaursailor's Avatar
 
Join Date: Nov 2010
Location: Balbriggan
Posts: 554
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 5
 
Check that the seal on the primary filter seated properly when you retightened,
also double check all joints you opened. Looks like air is getting into the system.

The great appear great because you are on your knees. James Larkin, Irish Labour Movement.
centaursailor is offline  
Quote Quick Reply Share with Facebook
post #4 of 54 Old 11-06-2011
Courtney the Dancer
 
jrd22's Avatar
 
Join Date: Nov 2000
Location: San Juan Islands., WA, USA
Posts: 3,885
Thanks: 4
Thanked 22 Times in 21 Posts
Rep Power: 15
 
On the 3GM I had (not sure if the 2GM is the same), there was a bleed screw on the top of the secondary fuel filter housing. Using the hand pump if I got good fuel flow there the engine would start and only occasionally need bleeding at the injectors. I agree that you should check the seal on the primary filter. I trust you know about keeping the seacock closed for the cooling water while cranking?
rchad likes this.

John
SV Laurie Anne

1988 Brewer 40 Pilothouse

jrd22 is offline  
Quote Quick Reply Share with Facebook
post #5 of 54 Old 11-06-2011 Thread Starter
Junior Member
 
Join Date: Apr 2007
Posts: 24
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
How will I know if I've found any air in the fuel system? i've bled the system numerous times at the secondary fuel filter, injection pump and at both cylinders. I'm getting no bubbles in the first two locations seeing squirting fuel at the cylinders. How stubborn could this air in the system be to find?
rchad is offline  
Quote Quick Reply Share with Facebook
post #6 of 54 Old 11-06-2011
Senior Member
 
Gary M's Avatar
 
Join Date: May 2006
Location: Sarnia ON
Posts: 693
Thanks: 3
Thanked 5 Times in 5 Posts
Rep Power: 10
 
You could have an ongoing air leak, check all of your connections. Got stranded on a delivery once because of an air leak at a fitting.
Gary M is offline  
Quote Quick Reply Share with Facebook
post #7 of 54 Old 11-06-2011
Senior Member
 
dabnis's Avatar
 
Join Date: Jul 2007
Location: Truckee, CA
Posts: 8,630
Thanks: 2
Thanked 116 Times in 114 Posts
Rep Power: 8
 
One way to find an air leak is to pressurize the whole system like this:
The Diesel Page, Electric Lift Pump and Racor Filter installation
Pump can be mounted right after the tank outlet for testing. I believe some have a "flow through" feature that allows the electric pump to be left in place and used only for bleeding or emergencies if the regular pump fails. If the regular pump's diaphram fails fuel could possibly leak through into the crankcase? If using the electric pump on an ongoing basis it might be a good idea to by-pass the diaphram pump?

Dabnis
dabnis is offline  
Quote Quick Reply Share with Facebook
post #8 of 54 Old 11-06-2011
pete
 
Join Date: Sep 2011
Location: boston ma
Posts: 50
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 4
 
If you can start with quick start it's air/ fuel I got air on mine draining the fuel filter Cracked injector line bleed air out that way If you google check out owners man. It will tell what to do
beachmont is offline  
Quote Quick Reply Share with Facebook
post #9 of 54 Old 11-08-2011 Thread Starter
Junior Member
 
Join Date: Apr 2007
Posts: 24
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
no start Yanmar

I seem to be getting fuel to the injectors, because when I bleed the line at the injection point, it squirts out. Is it possible that a clogged injector could be causing fuel to not get to the cylinder and make the engine fire up?
rchad is offline  
Quote Quick Reply Share with Facebook
post #10 of 54 Old 11-09-2011
Irrationally Exuberant
 
Join Date: Jul 2007
Location: Northern Virginia
Posts: 1,329
Thanks: 9
Thanked 6 Times in 6 Posts
Rep Power: 8
 
The rule of "last thing messed with caused the problem" suggests that your primary filter did not seal properly and is letting air in. What kind of primary filter is it? If there's an O ring or gasket involved in the part you opened up, I'd replace that.
rchad and davidpm like this.

Tom K

2000 Beneteau 331
Northern Chesapeake Bay

Ambition is a poor excuse for not having enough sense to be lazy ~ Steven Wright

Last edited by arf145; 11-09-2011 at 10:01 AM. Reason: Punctuation
arf145 is offline  
Quote Quick Reply Share with Facebook
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.


User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
Yanmar 1GM10 won't start Sometimesbrilliant Gear & Maintenance 16 08-01-2014 06:00 PM
Yanmar 3YM 30 start battery Brahmany C320 3 03-06-2011 06:00 AM
yanmar 2qm 20 will not start lordpoltimore Diesel 13 03-08-2010 01:26 PM
my yanmar 2gm20 will not start henrystanley Gear & Maintenance 6 06-25-2007 01:48 PM
Can't start My Yanmar bun243 Gear & Maintenance 8 06-04-2006 01:22 AM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome