• 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 Module

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.
See more
See less

3hp Evinrude Lightwin - dies after 5mins running

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

  • 3hp Evinrude Lightwin - dies after 5mins running

    I have a 3hp Evinrude Lightwin (year? '86??) bought second-hand but recently serviced. Starts easily but dies, gradually, after 5-10 mins UNLESS I pump the fuel-line bulb. Starts again easily once the bulb is pumped. The fuel-line, ball-valve filter and tank vent are OK. I know the compression is low, I wonder if this is the problem or could it be the fuel pump - so why didn't it show up at the time of servicing? I am grateful for any advice, Mark

  • #2
    Re: 3hp Evinrude Lightwin - dies after 5mins running

    Hmmm. A 'Rude 3hp with fuel pump and remote tank.Model number, so we can establish the year would help us a lot.I don't think your carb bowl would hold enough fuel for 5 or 10 minutes. The pump must be pumping at least some fuel, but it sounds as though it is working against too much resistance in the fuel supply. You may have some restriction in the fuel pickup in the tank or a partially blocked anti-siphon valve in the connector.I don't doubt you when you say that the line and primer bulb are okay, but how did you verify this?There may be a filter screen on the pump intake that could be partially gummed.If you can borrow a tank, line and primer bulb from a working engine and try that out it might help you isolate a problem, or prove that yours are not causing the trouble.Let us know what you find.


    • #3
      Re: 3hp Evinrude Lightwin - dies after 5mins running

      yep jb close your engine is pulling a vacume on the tank replace or just losin the cap on gas tank and the problem will be solved how i know it happened to me with a 10 hp and new tank just give tank some ait and i think you;ll be fine


      • #4
        Re: 3hp Evinrude Lightwin - dies after 5mins running

        Thanks; I tried these suggestions without effect so I took it in to the repair shop; there was a faulty valve in the fuel pump. All working fine now, thank you.Incidentally serial # is 3807A C560418