she runs but then shuts down..... - 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 > Gas > Atomic 4
 Not a Member? 


Like Tree4Likes
  • 4 Post By erps
Reply
 
LinkBack Thread Tools
  #1  
Old 09-03-2011
Member
 
Join Date: Feb 2009
Posts: 50
Thanks: 23
Thanked 0 Times in 0 Posts
Rep Power: 6
GaiaOrion is on a distinguished road
she runs but then shuts down.....

Hi guys, a friend of mine has a rebuilt carb, newer filter, etc...
he ran his engine for a few minutes then it quit, and can't start again.
He has taken the carb off to check it and it seems O.K.

Any suggestions for troubleshooting this one?

Thanks

M.
Reply With Quote Quick reply to this message Share with Facebook
  #2  
Old 09-03-2011
timangiel's Avatar
Senior Member
 
Join Date: Sep 2006
Posts: 221
Thanks: 5
Thanked 1 Time in 1 Post
Rep Power: 9
timangiel is on a distinguished road
if an engine wont start, usually you are either not getting gas or you are not getting spark. Try to at least verify you are, or are not, getting spark.
Reply With Quote Quick reply to this message Share with Facebook
  #3  
Old 09-03-2011
Banned
 
Join Date: Jul 2007
Location: Truckee, CA
Posts: 8,591
Thanks: 2
Thanked 115 Times in 113 Posts
Rep Power: 0
dabnis is on a distinguished road
Assuming you are getting spark, is there fuel in the float bowl? If so, could be some debris found its way into the main or idle jets? Also check the float for proper travel. If no or little fuel in the bowl check to make sure the tank vent is open. If you can see inside the filter bowl it should be full with no air space visible. If its not full you may have an air leak on the suction side of the pump. Check all connections carefully and consider replacing the fuel lines if nothing else works
Reply With Quote Quick reply to this message Share with Facebook
  #4  
Old 09-07-2011
Junior Member
 
Join Date: Jan 2010
Posts: 6
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
SAMUELBURNS is on a distinguished road
GOrion - After confirming you have spark, try removing a sparkplug and shining a flashlight into chamber.........chances are it's either completely dry inside, completely flooded, or water in gasoline appears as beads on plug tip. If dry, squirt 3-in-1 oil plus nose-dropper of gasoline into cylinder, replace plug, crank; a short running burst with engine then dying confirms that it is not getting fuel. If H2O in fuel, could be bad gasoline, leaky head gasket, water backing into engine from your VerniLifter exhaust riser, or (worst of all) a leak from water cooling jacket into manifold................not uncommon in 30+ year old A-4 blocks.
Reply With Quote Quick reply to this message Share with Facebook
  #5  
Old 09-07-2011
CalebD's Avatar
Tartan 27' owner
 
Join Date: Jan 2008
Location: NYC
Posts: 4,616
Thanks: 4
Thanked 93 Times in 85 Posts
Rep Power: 7
CalebD will become famous soon enough
How long did it run before quitting?
Could also be the coil or even the oil pressure cutoff switch if you have an electric fuel pump.
I'd ask this Q at the moyer marine forum.
Moyer Marine Atomic 4 Community - Home of the Afourians - Powered by vBulletin
__________________
"The cure for anything is salt water~ sweat, tears, or the sea." ~Isak Denesen

Everybody has one:

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
  #6  
Old 09-07-2011
erps's Avatar
the pointy end is the bow
 
Join Date: Aug 2006
Location: La Conner, Washington
Posts: 6,216
Thanks: 2
Thanked 26 Times in 26 Posts
Rep Power: 10
erps will become famous soon enough erps will become famous soon enough
My son-in-law fought with an Atomic 4 that would run great for an hour or so and then it would quit. It wouldn't start until it cooled down. We were both convinced it was a fuel starvation problem and worked from that angle for a long time, but the problem persisted. His problem turned out to be a bad coil that would fail after it heated up, but start working again when it cooled down.
Faster, CalebD, jackdale and 1 others like this.
__________________
Ray
S.V. Nikko
1983 Fraser 41
La Conner, WA


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


Boating for over 25 years, some of them successfully.
Reply With Quote Quick reply to this message Share with Facebook
  #7  
Old 09-08-2011
CalebD's Avatar
Tartan 27' owner
 
Join Date: Jan 2008
Location: NYC
Posts: 4,616
Thanks: 4
Thanked 93 Times in 85 Posts
Rep Power: 7
CalebD will become famous soon enough
As Ray said, the coil can heat up which can reduce it's ability to produce the voltage to produce an adequate spark to keep the engine going. It depends on the type of coil you are using but they all can fail - I think. Some are oil filled and others have a more firm filling agent. Check on the Moyer website for the different types they sell.
A new coil at a Napa or other auto parts store place is only about $30 - 40 (or less).
__________________
"The cure for anything is salt water~ sweat, tears, or the sea." ~Isak Denesen

Everybody has one:

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
  #8  
Old 09-08-2011
RobGallagher's Avatar
HANUMAN
 
Join Date: Aug 2001
Location: Noank, Connecticut, USA
Posts: 1,330
Thanks: 7
Thanked 15 Times in 14 Posts
Rep Power: 14
RobGallagher is on a distinguished road
A-4's run great with the correct parts, clean fuel, and good spark.

I have found that previous owners have often gone the cheap route using mail order auto parts and/or the engines suffer from a lack of routine maintenance. They run so well and are so reliable they are often neglected until multiple things may start going bad at once. That is the biggest problem with them when you first start out. Something like... a cheap coil that is failing, old fuel lines, and a clogged fuel vent.... it will one pull their hair out and start thinking about $10K diesel replacements that are not needed.

Go to Moyermarine.com and get the engine in order one step at a time. The forums are amazing!
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
Daily Runs chibb Cruising & Liveaboard Forum 38 11-26-2008 02:29 PM
Shipping canal near Baltimore shuts down after tugboat, sailboat ... - San Diego Union Tribune NewsReader News Feeds 0 05-19-2007 10:15 PM
Shipping canal near Baltimore shuts down after tugboat, sailboat ... - San Diego Union Tribune NewsReader News Feeds 0 05-14-2007 08:15 PM
paint runs? atiki100 Gear & Maintenance 2 02-25-2001 02:58 AM


All times are GMT -4. The time now is 02:44 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.