Welcome Guest - Sign Up today
Welcome Guest - Sign Up today
Store Links Mobile - Shop Now

Announcement

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

2002 searay won't start when warm

Collapse
X
  • Filter
  • Time
  • Show
Clear All
new posts

  • 2002 searay won't start when warm

    I have a new too me 2002 searay 190 with 4.3efi
    Boat starts perfect when cold and perfect when hot. But after running for a while then just stop and float for say an hour or so boat will not start. Have to let it sit till engine temp drops below 130 before it will start. Then it runs fine. It seem that if engine temp is below 150 but over 130 it will not start. Has anyone else had this problem? Any help would be great. Thanks

  • #2
    My first guess is vapor lock. When the engine compartment gets some heat soak happening after running for a while, the het builds up and causes the fuel to boil. The increased pressure creates a vapor pocket in the fuel system. When the motor is cranked over there is no fuel to run. If the motor cools back down it will start. It will start back when hot if it has not been shut off very long.

    Merc has attempted to fix and says to make sure to run the blowers when idling after a good run for a while. Has even installed a boost pump and this has helped some. Open the engine hatch to help it cool down. The real fix is a rerouting of the return fuel line from going back to the filter, to return it back to the tank
    94 Formula 27PC Custom 509MPI MEFI3 , B3 XR
    95 Rinker 232 w/ 7.4L Carb 0F425011 B1 0F486471
    07 SeaDoo GTX
    Raw Water Pump Maintenance
    Merc Adults Only
    G-Dad always said "First Liar doesn't stand a chance"

    Comment


    • #3
      Have you tried advancing the throttle when cranking ? Probably the IAC valve if that works
      1999 Powerquest 260 legend
      502 mpi
      B1

      Comment


      • #4
        welcome aboard.

        Which seat arrangement / engine compartment config do you have on your 190? i have heard of issue with the small dog house and rear jump seat arrangement with vapor lock. are you running the blower constantly?

        need pics of the boat..... just because we like pics
        1988 Cruisers Rogue 2420 -VP 290 DP now powered by custom 468 - http://forums.iboats.com/forum/owner...988-rogue-2420

        Past Boats
        1970 Wooster Hellion - Merc 9.8
        2002 SeaRay 190BR - 5.0 - A1G2 - "Cheasheads in Paradise"
        1984 Avanti 170DLI -3.0 stringer- "Ship Happens"

        What’s behind you doesn’t matter.Enzo Ferrari

        Comment


        • #5
          So went out today ran for an hour stopped for 10 min and boat started fine ran for 30 min and stopped for an hour and wouldn't start. I used starting fluid and motor would fire and run as long as I sprayed starting fluid in carb but wouldn't stay running. Guess that rules out electric problems because there is spark so back to vapor lock as possible problem? Thoughts? Please and thankyou

          Comment


          • #6
            Scott danforth

            Comment


            • #7
              Also not sure if it matters but when I put fuel in boat once it's full I get lots of fuel shooting out of fuel port. Vent problem maybe?

              Comment


              • #8
                Does this engine have the cool fuel system ? Vapour lock is a candidate.

                Comment


                • #9
                  Do you have TBI or MPI motor?
                  94 Formula 27PC Custom 509MPI MEFI3 , B3 XR
                  95 Rinker 232 w/ 7.4L Carb 0F425011 B1 0F486471
                  07 SeaDoo GTX
                  Raw Water Pump Maintenance
                  Merc Adults Only
                  G-Dad always said "First Liar doesn't stand a chance"

                  Comment


                  • #10
                    Not sure what a cool fuel system or RBI or moi motor is it's mercury 4.3 v6 efi. How do you fix a vapor lock?

                    Comment


                    • #11
                      I'm going to assume its a TBI, and as mentioned above the real fix is to run the return line back to the tank. This can be done at the fill hose. From what I'm reading you may not be handy with the do it your self stuff, but if you can find some one that is to help.

                      The pic below is for an MPI (Multi Port Injection) and I think you probably have TBI (Throttle Body Injection) and both would use cool fuel. The cool fuel module is on the port side of the motor below the motor mount.

                      Click image for larger version

Name:	Vapor Lock Fix.jpg
Views:	3
Size:	75.7 KB
ID:	249486

                      94 Formula 27PC Custom 509MPI MEFI3 , B3 XR
                      95 Rinker 232 w/ 7.4L Carb 0F425011 B1 0F486471
                      07 SeaDoo GTX
                      Raw Water Pump Maintenance
                      Merc Adults Only
                      G-Dad always said "First Liar doesn't stand a chance"

                      Comment


                      • #12
                        As above. AD as per usual has great advice...

                        Comment


                        • #13
                          Sign up today
                          Alldodge thanks for info. Your correct rerouting fuel line is a bit above my ability. Looks like I'm headed to dealer. I'll pass your info along to them
                          Thanks again

                          Comment

                          Working...
                          X