nextgen Posted October 11, 2009 Share Posted October 11, 2009 my 2001 E7-400 smokes and spuders with loss of power when it is hot out and only after you run it for a while and turn it off for 20 mins or so. dealership says i shuldnt worry about it! i need more help. Quote Link to comment https://www.bigmacktrucks.com/topic/11011-e7-400-fuel-problem/ Share on other sites More sharing options...
tech_j Posted October 13, 2009 Share Posted October 13, 2009 What color smoke? Sounds like the plastic gear on the supply pump could be trying to spin free of the shaft... Also verify that all fuel line connections are tight. A fuel pressure reading would be much useful. Quote Torque wrench? Can I put an air hose on it?? Link to comment https://www.bigmacktrucks.com/topic/11011-e7-400-fuel-problem/#findComment-41855 Share on other sites More sharing options...
nextgen Posted October 14, 2009 Author Share Posted October 14, 2009 i changed the supply pump and next will be the fuel preasure test. Quote Link to comment https://www.bigmacktrucks.com/topic/11011-e7-400-fuel-problem/#findComment-41912 Share on other sites More sharing options...
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