Jump to content

2004 mack ch613 extended crank, poor starting.


Recommended Posts

I have a 2004 Mack ch613 that doesn't like to start. Sometimes it cranks  over really good, but I have to crank it for a really long time, like 45 to 60 seconds before it will fire. Most times you have to stop cranking for awhile then try again and it usually fires. The other problem is that I have to hook a battery charger to it often to get it to crank over very well. The batteries are newer and test good. Thanks for any help!

Link to comment
Share on other sites

You used a load tester on the batteries to check them correct? And you disconnected them and checked each battery individually?  If so, you have to check voltage at the starter to ensure your getting 12V at the starter then check for a voltage drop while cranking .... check your grounds also..... if voltage drop, voltage, and grounds are good then the starter is likely bad. Make sure the starter solenoid on the firewall isn’t corroded also. As for extended crank time what is the fuel pressure , are the filters good? And lastly ... check the cam and crank sensors.... they will cause extended crank time 

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Create New...