• 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

45hp Honda

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

  • 45hp Honda

    Aloha, I have twin 45 hp Hondas. One of the engines runs only on one cylinder when it is in idle. When I throttle it up it seems to run on three. I notice a lot of unburned gas, the black gooey thing when I come in. Mechanics checked the ignition part sparkplugs,wires,and coils and found it to be okay. When he checked the carburetors he noticed that when he put his hand over the top two carbs the engine runs smoother. He says that there is probably a vacuum leak but couldn't find it. Did anybody run into a situation like this? Any suggestions? Thank You

  • #2
    Re: 45hp Honda

    Onagas,Boy is this a sore subject with me. I work at a Honda dealer and I have at least two of these a week same problem as yours. By the way the 50hp isnt much better. I have put the vacume gauges on at least 10 different 4-50 hp Hondas and found nothing. One thing i really hate about these newer hondas is the fact that the main jet is seal and you cant adjust it. The only thing that I have been able to do with a problem like yours is do a really good carb cleaning. I know it sounds weak but I havent been able to find anything else that is causing the problem.Hitman


    • #3
      Re: 45hp Honda

      Aloha hitman,thanks for the information. Will give the carbs a really good cleaning. The mechanic who was working on my engines was a BMW mechanic and usually he finds the problems to whatever is wrong. But he is stumped on this one. Thanks