Reply
 
Thread Tools Display Modes
 
Old 07-30-2016, 03:08 PM   #1
Veteran Member
 
David Kimmel's Avatar
 
City: Chesapeake Bay,Middle River,Md.
Country: USA
Vessel Name: Patty Ann
Vessel Model: Mainship 34 MK1 1980
Join Date: Jan 2014
Posts: 63
Diesel fuel in MDJA genny oil

There is fuel in the oil of my3.5 KW MDJA Onan. My understanding is bad injector pump, injector tip broken could cause this. Where else should I be looking for cause? What 1st steps should I take to determine the cause? Remedy? Thanks
__________________
Advertisement

David Kimmel is offline   Reply With Quote
Old 07-30-2016, 03:40 PM   #2
Guru
 
ulysses's Avatar
 
City: Gulf Shores, Ala.
Country: USA
Vessel Name: Ulysses
Vessel Model: Romsdal 1963
Join Date: May 2013
Posts: 871
Fuel transfer pump diaphram. If I am not mistaken the 3.5 Onan is a three cyl. diesel. I would think if you broke an injector tip you would notice a lot more than fuel in oil. Like rough running, smoke, etc..
__________________

ulysses is offline   Reply With Quote
Old 07-30-2016, 04:01 PM   #3
Veteran Member
 
David Kimmel's Avatar
 
City: Chesapeake Bay,Middle River,Md.
Country: USA
Vessel Name: Patty Ann
Vessel Model: Mainship 34 MK1 1980
Join Date: Jan 2014
Posts: 63
MDJA is a single cylinder
David Kimmel is offline   Reply With Quote
Old 07-30-2016, 04:07 PM   #4
Guru
 
ulysses's Avatar
 
City: Gulf Shores, Ala.
Country: USA
Vessel Name: Ulysses
Vessel Model: Romsdal 1963
Join Date: May 2013
Posts: 871
Then I would assume the fuel transfer pump is the culprit.
ulysses is offline   Reply With Quote
Old 07-30-2016, 07:05 PM   #5
Guru
 
Ski in NC's Avatar
 
City: Wilmington, NC
Country: USA
Vessel Name: Louisa
Vessel Model: Custom Built 38
Join Date: Jan 2014
Posts: 3,520
Yea, go after the fuel lift pump first. If much is wrong with inj pump or inj, that thing will not run at all.
Ski in NC is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not 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 Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





All times are GMT -5. The time now is 09:33 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012