SailNet Community - Reply to Topic

   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 > Yanmar 1GM10 runaway?
 Not a Member? 


Thread: Yanmar 1GM10 runaway? Reply to Thread
Title:
  

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

Message:
Trackback:
Send Trackbacks to (Separate multiple URLs with spaces) :
Post Icons
You may choose an icon for your message from the following list:
 

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.



Click here to view the posting rules you are bound to when clicking the
'Submit Reply' button below


Additional Options
Miscellaneous Options

Click here to view the posting rules you are bound to when clicking the
'Submit Reply' button below


Topic Review (Newest First)
08-01-2014 09:46 PM
PaulinVictoria
Re: Yanmar 1GM10 runaway?

You guys talking about a YSM or GM?
08-01-2014 07:53 PM
billymc38
Re: Yanmar 1GM10 runaway?

pull the crank case oil line off that goes to breather mine did same thing after a rebuild i had put the baffle in inspection plate in upside down and oil was causing mine to runaway turned the baffle right way problem solve
07-31-2014 08:52 AM
billymc38
Re: Yanmar 1GM10 runaway?

i rebuilt my yanmar ysm8 and the inspection plate on starboard side has a baffle that accesses bottom rod bearing and no where in manual does it show or tell which direction it is assembled in of course i choose the wrong way and it runaway every time i cranked it and was also told that if boat heals to the port side heavily same thing will happen especially when full of oil and about the time you get engine cover off it has burned that oil off and it returns to normal speed could be same thing happening to yours
good luck
05-24-2014 09:58 PM
dabnis
Re: Yanmar 1GM10 runaway?

Quote:
Originally Posted by PaulinVictoria View Post
Took her out for a run today. Much, much smoother and quieter now which is nice. She maxed out at about 3k rpm, I think the prop is dirty after sitting for pretty much two months which wouldn't help. Plenty of black crud out the back at that speed so I mostly motored around at about 2700. Didn't miss a beat at that speed. Still white smoke though, I can only think it is the timing slightly off (which would affect the maximum load speed too I assume), it looks to be a bit of a swine to adjust on the Yanmar as you need to see the back and the front of the engine at the same time, which is difficult with one person.
Sounds like you are getting close. As mentioned, no experience with Yanmars, but have read something about "shims" "Shims"? sounds complex. 2 people to time it? Maybe put an ad in the paper?

Let us know what You find.

Paul T
05-24-2014 09:45 PM
PaulinVictoria
Re: Yanmar 1GM10 runaway?

Took her out for a run today. Much, much smoother and quieter now which is nice. She maxed out at about 3k rpm, I think the prop is dirty after sitting for pretty much two months which wouldn't help. Plenty of black crud out the back at that speed so I mostly motored around at about 2700. Didn't miss a beat at that speed. Still white smoke though, I can only think it is the timing slightly off (which would affect the maximum load speed too I assume), it looks to be a bit of a swine to adjust on the Yanmar as you need to see the back and the front of the engine at the same time, which is difficult with one person.
05-24-2014 05:45 PM
dabnis
Re: Yanmar 1GM10 runaway?

Quote:
Originally Posted by PaulinVictoria View Post
I'll keep my eye on the coolant level, not sure that my single cylinder is going to make a measurable change to sea level even if all it was doing was turning water into steam though
My experience with white smoke was with gas engines. Smoked a lot at start up, then gradually cleaned out, until the next start up. I assume you put on a new head gasket when putting the head back? Maybe re-torque the head?

With a rebuilt injector & pump I would assume the fuel delivery is OK, as mentioned, maybe the timing? If everything is spot on I would think the white smoke would eventually clean out after a good hard run? If not, it may be excessive fuel or oil getting into the intake tract from excessive blow by. But the compression reading you had would indicate a fairly good ring seal?

Paul T
05-24-2014 02:06 PM
PaulinVictoria
Re: Yanmar 1GM10 runaway?

I'll keep my eye on the coolant level, not sure that my single cylinder is going to make a measurable change to sea level even if all it was doing was turning water into steam though
05-24-2014 01:08 PM
dabnis
Re: Yanmar 1GM10 runaway?

Quote:
Originally Posted by PaulinVictoria View Post
Well, picked up the injector and pump at lunchtime and headed to the boat to get everything back together. Re-assembled, snapped a banjo fitting (the last bolt to do up!), managed to get a replacement, finished assembly, checked, double-checked, bled fuel system. Ready to fire her up.
Turn the key, set the throttle, hit the start button and........
she fired up in a couple of seconds.
No leaks I could see, water coming out the back.
Let her warm up then went to 1k rpm in neutral, all good. 1.5k, still all good, 2k, 2.5k. 3k. 3.5k.
Into gear and got 2.5k in forward until it started to spit out a bit of black crud (expected at the dock), reverse managed to reach full revs for the engine of 3600rpm.
Much smoother than she was, lots more water coming out the back too.
Also unfortunately getting a nice dose of white smoke, which could either be diesel, or water. I'll have to check the injector timing, I noticed there were no shims under the injector pump when disassembling so there may be a timing issue there and she has always smoked like that since I had her.
Having an absolute swine of a time adjusting the stuffing box though, seems I can either have dripping when stationary and lots of dripping underway, or none. That's a story for another day though.
Sounds like you are making progress. I did a fair amount of timing on VW diesels, new timing belts, etc. No experience on Yanmars, however. Hope you have a good, detailed shop manual, as timing can be critical. Hopefully, the white smoke is just residual fuel left inside the cylinder. Coolant leaking into the cylinder can also produce white smoke, suggest you watch the level carefully. If you are still getting white smoke after a good long, hard run,
it may very well be coolant.

Fresh oil in the crankcase?

Paul T
05-24-2014 02:30 AM
PaulinVictoria
Re: Yanmar 1GM10 runaway?

Well, picked up the injector and pump at lunchtime and headed to the boat to get everything back together. Re-assembled, snapped a banjo fitting (the last bolt to do up!), managed to get a replacement, finished assembly, checked, double-checked, bled fuel system. Ready to fire her up.
Turn the key, set the throttle, hit the start button and........
she fired up in a couple of seconds.
No leaks I could see, water coming out the back.
Let her warm up then went to 1k rpm in neutral, all good. 1.5k, still all good, 2k, 2.5k. 3k. 3.5k.
Into gear and got 2.5k in forward until it started to spit out a bit of black crud (expected at the dock), reverse managed to reach full revs for the engine of 3600rpm.
Much smoother than she was, lots more water coming out the back too.
Also unfortunately getting a nice dose of white smoke, which could either be diesel, or water. I'll have to check the injector timing, I noticed there were no shims under the injector pump when disassembling so there may be a timing issue there and she has always smoked like that since I had her.
Having an absolute swine of a time adjusting the stuffing box though, seems I can either have dripping when stationary and lots of dripping underway, or none. That's a story for another day though.
05-23-2014 11:10 AM
dabnis
Re: Yanmar 1GM10 runaway?

Keep us posted. "Leaky injector pump"? Curious to know how the fuel ends up in the crankcase, that is a lot of leaked fuel. However, if so, that is an easy fix.

Paul T
This thread has more than 10 replies. Click here to review the whole thread.

 
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


All times are GMT -4. The time now is 07:25 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.