I have a 96 f250 stock except. For downpipe and cold air intake. When excelerating at 3\4 throttle or more when it gets to around 2200 rpm it loses about half power and does not gain rpm and sometime throws engine light until the rpms drop. The fuel pump is new and I have between 65 and 70 psi at the fuel bowl. What would cause this
samlevin90
Joined
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3,075 Posts
sounds exactly like a HPOil issue...
here's a procedure on testing the ICP/HPOil pressure on a 7.3L..if you verify that your issue IS related to the HPOil system...then you'd need further diagnostics to determing which component(s) to replace. could be high mileage injectors (leaking HPOil)...IPR leaking (internally)...weak HPOP, etc...
http://www.swampsdiesel.com/site/how_to_pdf/pdf/hpop.pdf
here's a procedure on testing the ICP/HPOil pressure on a 7.3L..if you verify that your issue IS related to the HPOil system...then you'd need further diagnostics to determing which component(s) to replace. could be high mileage injectors (leaking HPOil)...IPR leaking (internally)...weak HPOP, etc...
http://www.swampsdiesel.com/site/how_to_pdf/pdf/hpop.pdf
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