New Yanmar, hard to start, or just cold natured? - Page 4 - SailNet Community

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > On Board > Gear & Maintenance > Engines > Diesel
 Not a Member? 

Diesel This is a forum dedicated to diesel engines and their applicable accessories.


Reply
 
LinkBack Thread Tools
  #31  
Old 09-29-2009
Senior Member
 
Join Date: May 2007
Posts: 547
Thanks: 3
Thanked 3 Times in 3 Posts
Rep Power: 8
SteveInMD is on a distinguished road
With all due respect for my fellow members here...

Looking for a leak...if you have a leak before the lift pump it will be hard to find since it will always be under suction. You just have to go connection by connection and do your best. You could temporarily change our the fuel line leading into the lift pump with clear tubing provided you can find some with thick enough walls so it doesn't collapse. The clear line would show you if you have an air leak before the lift pump. You should see no bubbles with the motor running.

If the leak is between the lift pump and the high pressure pump you should be able to see wetness or dripping fuel.

If the leak were after the high pressure pump you would be running on less than all cylinders, and running rough so I don't think that's the case.

With the hours on the motor you have it's very unlikely to be a bad injector. You can remove them and send them off to be rebuilt, but I think you are barking up the wrong tree.

If you injector pump is so bad that it's leaking back I doubt your motor would run at all. Normally injector pumps do not leak back what so ever. It's also very unlikely the problem at the low hours you have.

You should be able to crack the bleed screw a little on top the secondary filter with the motor running and fuel should squirt out. If not you may have a weak lift pump. Again, this is unlikely since it's a new motor.

If you don't have the Yanmar Parts Manual and Service Manual you should buy them.

You might find taking a class useful. I've worked around diesels for many years, but I learned a lot by taking a level 1 and 2 class on marine diesels. I learned a ton and have put what I learned to good use on my boat.
Reply With Quote Quick reply to this message Share with Facebook
  #32  
Old 10-04-2009
Junior Member
 
Join Date: Apr 2009
Posts: 18
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
Dockdozer is on a distinguished road
Finally. I want to thank everyone for your help. The first thing I did when I got to the boat was bleed the fuel system. Lot of air! So I went over every fitting from the fuel tank to the engine. One or two seemed lose to me. Pulled the filters checked the gaskets. Bleed the system again and low and behold. Finally she starts like a diesel should. Next morning, touch the key, no glow plugs, less than a second fires right up. YYAAHHOO!!! Let set threw the day same thing. Next morning Same thing!!!!
Thank You All for all your help!!!!!!!
Dozer
Reply With Quote Quick reply to this message Share with Facebook
  #33  
Old 11-24-2009
Sailor
 
Join Date: Apr 2008
Posts: 23
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
CanDrac is on a distinguished road
I had the same problem at first. I was doing what the dealer showed me: Glow plugs, rev it up a little, then start. Yet it always stopped after a few seconds...

Then I learned that in warm weather YOU SHOULDN'T HAVE TO DO ANYTHING AT ALL. Now I just turn the key and it starts. Every time!
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote Quick reply to this message Share with Facebook
Reply

Quick Reply
Message:
Options

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

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:

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

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Hard Warm Starting Yanmar ysm8 mhfowle Gear & Maintenance 7 12-20-2006 01:45 PM
Cold Weather Engine Start bmelchionda Gear & Maintenance 18 11-05-2006 09:55 PM
Can't start My Yanmar bun243 Gear & Maintenance 8 06-04-2006 01:22 AM
Cold Weather Clothing Bob Merrick Learning to Sail Articles 0 02-24-2004 07:00 PM
Recovering from Bad Starts Dean Brenner Racing Articles 0 05-29-2002 08:00 PM


All times are GMT -4. The time now is 09:07 PM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012

The SailNet.com store is owned and operated by a company independent of the SailNet.com forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.