January 1, 2005

How To Check For Leaking Fuel Injector

Leaking Fuel Injector

It’s possible that one of the fuel injectors is leaking. Normally, pressure is maintained in the fuel system after engine shutdown. Because of this pressure, a leaking injector would discharge fuel to its cylinder until the pressure was near zero. Burning off that excess fuel would lead to the black smoke on startup. Also, because the pressure in the fuel system is down to zero or near zero, a number of cranks on startup would be required to rebuild the pressure sufficiently for the engine to start.

How To Check For Leaking Fuel Injector

Tags black smoke, fuel injectors
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One response to “How To Check For Leaking Fuel Injector”

  1. Cal Sherman says:

    My 960 is running very rich, hard starting, missing, engine idle is erratic. The engine is the 2.9 inline 6 cyl. No check engine lights, have not checked codes yet.

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