Leaking Injector
Thread Starter
Instructor
Joined: Sep 2005
Posts: 113
Likes: 0
From: Albuquerque NM
Leaking Injector
My L98 91 C4 has the symptoms of a leaking injector. Resistence of all injectors is OK. Any way of telling what injector is bad other than pulling all the plugs and looking for fouling?
Race Director
Joined: Jun 2004
Posts: 13,953
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From: WI
Le Mans Master
Joined: Feb 2006
Posts: 8,753
Likes: 9
From: Louisiana
The easiest but not always certain was is to pull the plugs after the fuel pressure drops. The most certain was is more work involved, but it will absolutely tell you which one is leaking. That way is to actually pull the fuel rail from the intake manifold. With the injectors still attached to the fuel rail and the fuel lines connected....prime the fuel pump and see which injector(s) drips. By the time you get that far into it, you might as well replace all 8 injectors...especially since the 89-91 Multec injectors have such a high risk of failure and are unservicable. Find a set of good 22 lb/hr injectors to replace them with.
