finding a week injector?

[melmount]

I know its possible for an injector to pass the buzz test and the contribution test but still not be properly working. I have a shudder which i am really beginning to think it may be a skip under load(tc locked) at low speed(38mph) and 1300 rpm. If it is a week injector, how do I find it?
thx

 

[JLDickmon]

the buzz test checks the injector electrically..
the contribution test checks it at a lower rpm, so you could be correct in your thinking..

it could simply have some crud built up on the nozzle..

now, let me ask you this..

you participated in Sagebel's thread..

have you check any of that stuff?
(carrier bearing, flex plate, u-joints)

 

[melmount]

i checked my uvch with the ohm meter looking for 2.8 ohms. Drivers side was dead on. Pass side read 6,6,6 and 27 uvch was loose under the cover. I had to scrape the ground connections and clean all of them. I got it down to 3.2 ohms.
So in a nut shell, the buzz test wont test the stuff completely. check the wires at the cover to make sure the injectors are getting juice.