bigdogdaddy Posted April 3, 2011 Share Posted April 3, 2011 I recently purchased a 1994 Mack CH613 with a 350 engine. When I let it sit overnight, it is very hard to crank the next day. Once cranked, it will start right up the rest of the day. I searched the forum for others with a similar problem, and the transfer pump or check valve or a hole in fuel line seemed to be the most popular response. Any other suggestions or can anyone further elaborate on this. Thanks in advance. Quote If you can't run with the big dogs, then stay on the porch! Link to comment https://www.bigmacktrucks.com/topic/18584-94-ch613-w-350-hard-to-start/ Share on other sites More sharing options...
rhasler Posted April 3, 2011 Share Posted April 3, 2011 Welcome to BMT. You might check the fuel return cross over pipe (U shaped pipe between the cylinder heads) for dried out or cracked rubber grommets. Quote "Mebbe I'm too ugly and stupid to give up!" Link to comment https://www.bigmacktrucks.com/topic/18584-94-ch613-w-350-hard-to-start/#findComment-75412 Share on other sites More sharing options...
bigdogdaddy Posted April 3, 2011 Author Share Posted April 3, 2011 Welcome to BMT. You might check the fuel return cross over pipe (U shaped pipe between the cylinder heads) for dried out or cracked rubber grommets.Thank you. I'll look tomorrow. Would I need to check this first or the transfer pump/check valve? Thanks. Quote If you can't run with the big dogs, then stay on the porch! Link to comment https://www.bigmacktrucks.com/topic/18584-94-ch613-w-350-hard-to-start/#findComment-75413 Share on other sites More sharing options...
rhasler Posted April 3, 2011 Share Posted April 3, 2011 Thank you. I'll look tomorrow. Would I need to check this first or the transfer pump/check valve? Thanks.Replacing the grommets will only cost you a couple of dollars. Quote "Mebbe I'm too ugly and stupid to give up!" Link to comment https://www.bigmacktrucks.com/topic/18584-94-ch613-w-350-hard-to-start/#findComment-75418 Share on other sites More sharing options...
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