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66 Posts
Sooo... I have another injector question...
I have a 2002 GMC LB7 with 80k miles, and the injectors were replaced at about 30-40k miles by the last owner under the warranty GM had for them (he was also the original owner). The truck smokes a little at idle when in park, and it gets worse when in drive (white smoke). I used my PPE to read the injector balance rates, and they are all within the +/- 4 number... but I have never read a thread of what it means when the reading disappears (I rev it a little, then that reading goes back to a normal 2.5ish before changing to a blank reading for the #7 injector).
I tried adding Lucas additive which didnt help... and I have ordered a bottle of Opti-Lube XPD (on its way and should arrive tomorrow). Is there anything else that I can do to extend the life since these didnt last very long, or should I get it fixed ASAP before it does some serious engine damage?
Thanks in advance, and sorry for another LB7 thread... the blank balance rate reading seemed like something new that I couldnt find in a thread search on the forum.
I have a 2002 GMC LB7 with 80k miles, and the injectors were replaced at about 30-40k miles by the last owner under the warranty GM had for them (he was also the original owner). The truck smokes a little at idle when in park, and it gets worse when in drive (white smoke). I used my PPE to read the injector balance rates, and they are all within the +/- 4 number... but I have never read a thread of what it means when the reading disappears (I rev it a little, then that reading goes back to a normal 2.5ish before changing to a blank reading for the #7 injector).
I tried adding Lucas additive which didnt help... and I have ordered a bottle of Opti-Lube XPD (on its way and should arrive tomorrow). Is there anything else that I can do to extend the life since these didnt last very long, or should I get it fixed ASAP before it does some serious engine damage?
Thanks in advance, and sorry for another LB7 thread... the blank balance rate reading seemed like something new that I couldnt find in a thread search on the forum.