Hot engine won't start - 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
 Not a Member? 
  #1  
Old 08-11-2008
Junior Member
 
Join Date: Aug 2007
Location: New York, NY
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
threeofakind is on a distinguished road
Hot engine won't start

Hi,
I ran in a strange problem last WE on my Beneteau: The engine was running when I got the temperature alarm. I immediately shut off the engine, and let it cool.
I then checked the oil level which was low and added some.
I tried to restart the engine, but it wouldn't (still too hot?). I could hear a 'click' but no cranking.
Back at the mooring a few hours later, I gave it another try, and it did start right away... This got me very confused.
Any idea at what may be going on?
Thanks,
Thomas
Reply With Quote Share with Facebook
  #2  
Old 08-11-2008
HoneyDoII's Avatar
Honey-Do II
 
Join Date: Apr 2008
Location: Fairfax, VA
Posts: 31
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
HoneyDoII is on a distinguished road
I'll offer one sugestion, since the engine was overheated some of this heat was also transferred to your starter. A hot engine is hard to crank and a hot starter is much less efficient electrically than a cold one - it's possible it simply couldn't muster up the power to turn the engine over. Later with everything cool (relatively) it was again no problem. I would also suggest that you watch it for the cause of the overheating problem, I don't think it was oil if you were just a little low.
__________________
Kevin
Hudson Force 50
Reply With Quote Share with Facebook
  #3  
Old 08-11-2008
erps's Avatar
the pointy end is the bow
 
Join Date: Aug 2006
Location: La Conner, Washington
Posts: 6,149
Thanks: 2
Thanked 24 Times in 24 Posts
Rep Power: 10
erps will become famous soon enough erps will become famous soon enough
The click you heard was the starter solenoid switch closing. Two things are possible. Either the engine was so hot that it was partially seized, and the starter couldn't budge it or the hot starter had high resistance and couldn't pass enough current through the contacts to spin the motor. I think the second was more likely.

Were there any other problems with the cooling system that may have caused the over heat problem? An overheat due to low oil is quite a bit more serious than a overheat due to low water.
__________________
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.

Last edited by erps; 08-11-2008 at 09:53 PM.
Reply With Quote Share with Facebook
  #4  
Old 08-11-2008
Senior Member
 
Join Date: Feb 2007
Location: michigan
Posts: 284
Thanks: 3
Thanked 2 Times in 2 Posts
Rep Power: 8
cruisingdream is on a distinguished road
cooling concern

You may have partially seized the engine from being too hot and loosened up enough when it cooled down.
This is a cooling water concern, a slightly low oil level would not cause an overheat , most likely the oil pressure alarm would go off first ,check your fresh water cooling system, drive belts, sea strainers, valves, thru hulls for blockage.
Your engine may have survived but with a couple of years taken out of its life.
Reply With Quote Share with Facebook
  #5  
Old 08-11-2008
jrd22's Avatar
Courtney the Dancer
 
Join Date: Nov 2000
Location: San Juan Islands., WA, USA
Posts: 3,816
Thanks: 3
Thanked 14 Times in 14 Posts
Rep Power: 14
jrd22 will become famous soon enough
I would agree with the posts above that this is a water/coolant issue rather than oil. What was the water temp (if there is a guage) when the alarm went off? I would determine if you are getting enough raw water flow through the exhaust and also check your coolant level. I always change thermostats if an engine overheats, and changing the impeller on the raw water pump, or at least checking it would be a good idea.

John
__________________
John
SV Laurie Anne

1988 Brewer 40 Pilothouse

Reply With Quote Share with Facebook
  #6  
Old 08-11-2008
Junior Member
 
Join Date: Dec 2005
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
alan83054 is on a distinguished road
Ditto John's post above...all of his suggestions are great!
Reply With Quote Share with Facebook
  #7  
Old 08-12-2008
Senior Member
 
Join Date: Sep 2006
Posts: 2,199
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 8
Rockter will become famous soon enough
three...
When you say that the oil level was low, do you mean right off the dipstick, or low on the dipstick?
If the motor was running when you shut down, it will not have siezed.
I don't think the starter cooked. The engine is likely to have been in flames before that happened.
Check the wire to the starter solenoid. It may be loose or have fallen off.
Reply With Quote Share with Facebook
  #8  
Old 08-12-2008
Junior Member
 
Join Date: Aug 2007
Location: New York, NY
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
threeofakind is on a distinguished road
Thank you all for all your good tips.

I could not see any trace of oil on the dipstick (because of the heel?). After I added about 2 quarts (more than 'some') the dipstick showed oil within the range.
There is no gauge, only a temperature alarm.

The engine is cooled with raw water. I always check the exhaust for water coming out. There was water at all times, but I understand I need to check the pump as maybe the flow wasn't enough.

I am obviously not very skilled when it comes to engines because I always thought that the raw water was doing all the cooling.
But reading your post, I am now guessing that my engine (Volvo Penta 2002) also uses fresh water. There is a reservoir which looks low as well. I will refill it with fresh water. Hopefully this was the cause of the overheating. With these hot days, maybe the water did evaporate faster than usual...

Thanks again for your suggestions.
Reply With Quote Share with Facebook
  #9  
Old 08-12-2008
Boasun's Avatar
Senior Member
 
Join Date: Feb 2007
Location: New Orleans, LA
Posts: 3,064
Thanks: 1
Thanked 0 Times in 0 Posts
Rep Power: 9
Boasun will become famous soon enough Boasun will become famous soon enough
Gauge your engine!! You'll want; Oil Temp, Coolant Temp, Engine Oil Pressure, and transmission temp & pressure (if possible). All of this along with the Tachometer. Then add in the if you can the low level oil and coolant alarms along with the other temp alarms.
With the gauges you can log your engine's operation temp & Oil pressures, while in use. Then any changes will stand out like a sore thumb.
An Hour meter also for those pesky oil changes at regular intervals.
__________________
1600 Ton Master, 2nd Mate Unlimited Tonnage

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

S/V Rapture

Last edited by Boasun; 08-12-2008 at 12:45 PM.
Reply With Quote Share with Facebook
  #10  
Old 08-12-2008
RAGTIMEDON's Avatar
Senior Member
 
Join Date: Apr 2007
Location: St Peters, MO
Posts: 389
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 8
RAGTIMEDON is on a distinguished road
If yur engine is "fresh water cooled" which is common for anything over about 10 HP, the fresh water is not really water, but is a mixture of water and antifreeze. Since you said there is a reservior, chances are that is what you have. The sea water goes thru a heat exchanger, to cool that antifreeze/water mix, just like an auto radiator is cooled by air flow thru it. The heat exchanger is a honeycomb with lots of little tubes to transfer the heat from the engine coolant to the sea water. If the pump impeller is a couple years old, pieces of it can break off and plug up the heat exchanger, causing overheating. sometimes it doesn't affect the flow of sea water significantly, so you think you have cooling, but if the engine coolant is not flowing freely, it overheats! If you have not changed your impeller for two years, do it now. If there are any pieces of rubber missing from the old impeller, take your heat exchanger apart and clean it. BTW, before you start your engine EVERY DAY, check the oil! If you change oil every 100-150 hours, which most engine manufacturers reccommend, the oil should not be below the dipstick unless there is a leak. Checking oil level every day you use your engine will let you know if there is a leak. It can happen any time, due to the inherent vibration in a boat.
__________________
Don
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

1980 Endeavour 37 sloop, currently in the Mississippi near St Louis
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Last edited by RAGTIMEDON; 08-12-2008 at 01:13 PM.
Reply With Quote Share with Facebook
Reply


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
IP31 yanmar 3gm30 badsanta Island Packet 10 06-07-2008 12:34 AM
My New Catalina 25 42ndstreet General Discussion (sailing related) 23 09-06-2007 12:17 AM
My engine is getting too hot.. groundhog Gear & Maintenance 30 09-04-2007 04:27 AM
Safety Check Mark Matthews Learning to Sail Articles 0 01-25-2000 07:00 PM
Safety Check Mark Matthews Seamanship Articles 0 01-25-2000 07:00 PM


All times are GMT -4. The time now is 07:59 AM.

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.