Jump to content

Recommended Posts

Anson    0

2006 Avalanche w/6.2 Black Scorpion. For whatever reason after running and then shutting down for more than 30mins, it will not start. It seems like a vapor lock.  Runs good with no hesitation at all when running.  I installed a new booster pump, water separated filter and fuel filter, but it still does it.  I  managed to get it started by using full throttle a few time. I’ve also had to be towed in a few times and have start without any problem in a few hours.  After looking online, it seems to be a common problem, but I haven’t found a fix.  If anyone has any idea, please help. Also, where is the fuel cooler installed on this thing and is it even possible to get to it without removing the entire engine.

Share this post


Link to post
Share on other sites
InfinitySurf    280

Sounds like you are on the right track with the vapor lock.

Maybe try keeping the engine compartment open.....as well as run with the blower on to keep removing the heat from the engine bay. If nothing else this will verify for sure that vapor lock is your issue.

Have head that you can install a fuel cooler check valve that may help.

Found this too:

Pour cold water over the fuel pump and fuel lines while the ignition is in the off position. This will quickly cool down the fuel pump and condense the fuel from vapor back to liquid form, eliminating the vapor lock in the fuel pump and lines.

 

  • If you are routinely having problems with vapor lock in your vehicle, wrap the fuel lines leading to and from the fuel pump with aluminum foil. This will help insulate the lines and prevent the fuel from heating up to the point of vaporization.

Here is a link to a pretty detailed write up on vapor lock:

https://www.perfprotech.com/blog/articles/mercruiser-vapor-lock

Share this post


Link to post
Share on other sites
rhino89523    29

Don't have much to add, but I love old Internationals and they are the king of vapor locking. Insulating the fuel lines in the engine compartment fixes it on IH's. the make some pretty cool sleeves and they make some stuff kind of like aluminum foil with some good sticky stuff to hold it together all sold at Summit Racing. 

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

Sign in to follow this  

  • Recent Status Updates

    • MajaKazazic

      Are you  engineering students and searching for homework help services?helpmeinhomework.com provide all types of engineering assignment homework help services.helpmeinhomework has a reputation of providing premium quality online engineering assignment help for over a decade. Students all over the world find our services effective and reliable.Our Engineering Topic computer science,help with electrical engineering ,mechanical engineering,civil engineering...etc

      · 0 replies
    • MatthewsDave

      Sometimes it is normal for students to have trouble completing their finance assignments on time, seeking help from the team of experts in finance assignments to complete the assigned work on time. With the effective guidance of finance homework, we also strive tirelessly to improve your grade.
      Expert teams are available at any time to assist you in all types of topics related to your finance assignment, allowing you to easily complete finance homework on time to get an A + grade. You can certainly gather a lot of important information under the guidance of our energetic Finance faculty.
       
       

      · 0 replies
    • harlobra

      Heading to Lake Ouachita Arkansas in the morning for a week of houseboating and surfing.
      · 0 replies
    • Nick213

      Ordered a  sewlong cover...... hope it's as good as everyone says since there almost double the cost of others.
      · 3 replies
    • luluzer

      Winterization tomorrow for this homie. Seemed like the season flew by - let's hope winter does the same. 
      · 0 replies
    • Guest

      Guest  »  dittrimd

      Just read your message regarding restoring your Barefoot Falcon.  I have a 1991 Barefoot Falcon with exact same floor issues.  I also had to replaced the stringers and am in the process of replacing the floor.  My question is regarding the need to replace the foam.  Like you I have several hundred pounds of saturated foam removed and I am not certain to replace it or leave it without foam.  Do you are anyone know if the foam is necessary for any structural support, or is it just for sound and flotation?
      · 0 replies
  • Topics

  • Popular Contributors

    Nobody has received reputation this week.

×

Important Information

By using this site, you agree to our Terms of Use.