Ford 4.9l (300 c.i.d.) Hesitation and Startup Fix

A common issue on Ford's 4.9l (300 c.i.d.) I-6 is hesitation and startup trouble. Simply remove the connector to the throttle position sensor and the idle speed controller and clean the terminals. 9 times out of 10 this will solve the issue.

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Ford Hesitation Repair (Ford Technical Service Bulletin)
This video covers the replacement of the throttle body gasket to eliminate a vacuum leak that causes a hesitation.





F150 EGR valve quick test
This doesn't test every part of the system (wiring for example), but it does prove to you that your EGR passages are clear and that the vacuum lines leading to and from the EVR solenoid (which triggers EGV valve) have sufficient vacuum.





4.9l I6 Fuel Injection Discussion (And where the Fuel Pressure Relief Valve is)
Just a short video going over various parts of the EFI fuel system, some filter/part numbers and ending with where to find the Fuel Pressure Relief Valve on the Fuel Rail (Pictures) Includes information for Fuel Line Removal Tools, Fuel Filters, etc.





1987 F-150 4.9 inline 6 Rough idle




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