MarisaHicks Report post Posted July 10, 2015 Cranks but no start. It happened one time after being on the road for an hour. Stopped for fuel went to restart cranked for 5-7 seconds no start then tried again it started OK. Drove about 4 -5 hours stopped 4 times no problem then stopped to remove car no start cranked and cranked ng. Removed air filter sprayed ether fired up OK. Share this post Link to post Share on other sites
dickandlois Report post Posted July 10, 2015 MarisaHicks, Welcome to the FMCA Forum.First, you posted - Removed air filter sprayed ether fired up OK. Ether is not good to use on Diesel engines !!! They are equipped with Pre heaters and the ether could explode and or damage the cylinder(s) The closest thing to Diesel in a spray can form is WD-40.From your information, my first thought is lack of fuel.Possible causes.1- fuel filters2- fuel lift pump3- fuel lift pump relay4- small leak(s)in the supply side fuel lines to the lift pump. Small pin sized holes in this part of the fuel system will cause hard starting, due to fuel leak back. once the engine is running this is not as noticeable, but can cause decreased performance.5- water in the water / fuel separatorHave noticed any check engine light when it does not start or shortly afterwards ?Rich. Share this post Link to post Share on other sites
MarisaHicks Report post Posted July 10, 2015 No check engine light. Runs great after starting. Just got back from Cummins with new filters. Let you know what happens. Share this post Link to post Share on other sites
dickandlois Report post Posted July 12, 2015 MarisaHicks,Marisa, There is one more item that you might check.If changing the filter did not clear the problem and the system is priming, thinking that would eliminate the lift pump.The starting issue-is it after the coach has been setting for a period of time?Should this be the case then you might have a problem the the intake manifold per-heater circuit. This would cause the problem when cold, if it starts when it is hot / warm then this would also point the the per-heater.I did forget to ask this question when you made your first post.Rich. Share this post Link to post Share on other sites
wolfe10 Report post Posted July 12, 2015 Rich, Actually, it sounds like the opposite-- it starts when cold, but did not start "after being on the road for an hour. Stopped for fuel...." Share this post Link to post Share on other sites
