• If this is your first visit to the iboats.com Boating Forums, be sure to check out the FAQ. To post a question or comment, begin by signing up. To start viewing messages, select the forum that you want to visit from the selection below.


Announcement

Announcement Module
Collapse

Help Tip: If you have a question that has not been answered to your satisfaction in the archives, it is always best to start a new thread of your own. By starting your own thread, you will receive the maximum number of views by forum members.

Below are some additional forum policies in hopes of all iboats members will follow, Thank you.

1. Please do not reply to old topics or hijack existing topics. Old topics of a technical nature are like a library book, Please do not write in them.

2. Old topics should be considered archives and used for reference only. Please do not reply to them.

3. Do not take over someone elseís topic (aka hijack) with your own question, even if it is similar. If you have a question that has not been covered to your satisfaction in the archives, it is always best to start a new topic of your own.

4. If you have a question for the original poster (OP) and the topic is over 30 days old, send the OP a PM, he may not even visit the forums any longer, or may not notice your question in the old topic.

5. By starting your own topic, you will receive the maximum number of views by forum helpers that may not even notice your question when itís posted at the end of someone elseís topic. And those answers will be specific to your particular issue.

6. Please do not post to topics that have been inactive for more than 3 months unless you are the original poster. We have very active forums and any topic that remains inactive for that long should be considered "dead". It is especially confusing when there is an entirely new question posted to an old topic.

7. Posting at the end of any topic is considered to be hijacking the original posters topic which in turn subjects the topic to be closed if it continues to happen thus not making it fair to the original poster in the future had for some reason he/she needed to return for additional information or provide an update of the problem solved which is always welcomed within a reasonable amount of time frame.

8. Please note that you should see a red banner pop up near the bottom of each inactive topic asking you not to reply to old topics. The Red banner will read: Please note this topic has been inactive for 90 days. For the best results, please start a new topic.

Thank you all in advance for doing your part in helping iboats run a smooth ship.

Additional forum rules linked below.
http://forums.iboats.com/forum-rules-guidelines-405/
See more
See less

1998 Johnson 40 - Removing VRO

Page Title Module
Move Remove Collapse
X
Conversation Detail Module
Collapse
  • Filter
  • Time
  • Show
Clear All
new posts


  • 1998 Johnson 40 - Removing VRO

    Hello

    Just bought a boat with a 1998 40 HP Tiller. I am going over it bit by bit as I think I got a decent deal, but the motor might not have been cared for the way I would have. Didn't run all that well but had good compression and nothing especially out of repair. I have a shop manual (Clymer) which has helped me with linking and syncing and some other things, but seems a little light on the following subject.

    The VRO is disconnected. The previous owner out on a Sierra fuel pump that has an inlet and outlet and uses the pulse from behind the pump.

    I just bought the Johnson pump and it has an inlet, outlet and a pulse line - no hole in back.

    Can I use the pulse line that the VRO used without a pulse limiter. I am assuming so otherwise why the third line. I would rather use the OEM fuel pump as I already have a service kit for it.

    Also, is the airbox drain supposed to be piped into the intake manifold or crankcase. It is not connected to anything right now.


  • #2
    Re: 1998 Johnson 40 - Removing VRO

    Originally posted by JSymchik View Post
    Hello

    Just bought a boat with a 1998 40 HP Tiller. I am going over it bit by bit as I think I got a decent deal, but the motor might not have been cared for the way I would have. Didn't run all that well but had good compression and nothing especially out of repair. I have a shop manual (Clymer) which has helped me with linking and syncing and some other things, but seems a little light on the following subject.

    The VRO is disconnected. The previous owner out on a Sierra fuel pump that has an inlet and outlet and uses the pulse from behind the pump.

    I just bought the Johnson pump and it has an inlet, outlet and a pulse line - no hole in back.

    Can I use the pulse line that the VRO used without a pulse limiter. I am assuming so otherwise why the third line. I would rather use the OEM fuel pump as I already have a service kit for it.

    Also, is the airbox drain supposed to be piped into the intake manifold or crankcase. It is not connected to anything right now.
    Anything?

    Comment



    • #3
      Re: 1998 Johnson 40 - Removing VRO

      Have a similar issue as I am dumping my second VRO for premix. My own research tells me that if the fuel pump I buy has no pulse fixture in the back then it usually comes with a gasket that covers up the pulse hole on the block. In which case, yes, we can then use the old VRO pulse hose from the lower part of the block. Seems that a pulse good enough for the VRO is good enough for the straight fuel pump. If I'm wrong, somebody stop me.

      On my '99 Johnson 50 that air silencer hose you're asking about runs from the nipple at the bottom of the box back toward a nipple at bottom center of the block. Flashlight it and you'll find it. Had to lengthen my hose, because pulling the air silencer for carb service automatically pulled that hose from the block, and I had the same question you did for quite a while.

      Comment

      Working...
      X