Home | Classifieds | History | Technical | Links | Store | About Us | Email
Topics Topics Edit Profile Profile Help/Instructions Help Member List Register  
Search Last 1|3|7 Days Search Search Tree View Tree View  

Please HELP YSB8 Question

Old Marine Engine » Boats with Early Inboards » Please HELP YSB8 Question « Previous Next »

Author Message
Top of pagePrevious messageNext messageBottom of page Link to this message

New member
Username: ssnoc

Post Number: 3
Registered: 09-2010
Posted on Sunday, September 12, 2010 - 03:50 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

How much pressure should come from the injection pump on my YSB8? I had the pump rebuilt and it squirts out fuel from the high pressure line with the injector off, should that be a super strong stream? I can put my finger over it and hold it back. When I connect the high pressure line to the injector and leave it outside the combustion chamber to check the spray - There is NO spray, nothing comes out of the injection nozel.

There is NO air in any lines I bled them all a million times. I need to be clear on how the injection process works. Does the little sqirts build up pressure in the injector and then it finally mists? Or should the injector start to mist as soon as it gets the squirts from the injection pump? Its got me very confused because the injection shop siad the injector was good, yet it never mists out any fuel.. The high pressure pump is a very simple pump - a needle valve controls fuel level and the cam shaft pushes the plunger. It sends out a "sqirt" with each crank, but no mist from the injector.

How much force should should be in those "sqirts" from the injector pump? And can you please explain to me where this pressure comes from to open the injector and make the mist?

I've been trying to fix this thing for two months and NO one seems to know any of these answers.. Does anyone know?

Thanks! Rob on Long Island.

Add Your Message Here
Bold text Italics Underline Create a hyperlink Insert a clipart image

Username: Posting Information:
This is a public posting area. Enter your username and password if you have an account. Otherwise, enter your full name as your username and leave the password blank. Your e-mail address is optional.
Options: Automatically activate URLs in message

Administration Administration Log Out Log Out   Previous Page Previous Page Next Page Next Page

Home | Classifieds | History | Technical | Links | Store | About Us | Email
&copy 2005 OldMarineEngine.com, P.O. Box 188, Forest Dale, VT 05745-0188 • Phone: 802-247-4864 • All rights reserved.
   Marine Engine Seloc Repair Manual Lookup Tool

marine gas engine repair and restoration