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Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by fright89, Dec 27, 2001.
tbi makes a klicking sound. injectors i guess. is that normal?
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thanks. good deal one less thing to fix
Yep, that's just the sound of the injector pintles opening and closing. Each injector is a miniature solenoid. There's a coil that creates a magnetic field to yank the pintle open, then a spring that slams it back closed when the power to the coil turns off. This happens very quickly and more often as RPM's rise. It's even louder if you have a TPI system, since there are 8 injectors clicking instead of 2.
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Yes, that is normal.... However, In recent mods I in advertantly bent the hard gas lines that run from the passenger side frame rail up and along side the tranny up to TBI. They were touching and it was making is this louder than normal clicking/ticking noise. After hours of looking I found them vibrating and contacting one another. Stuffed a rag between them and the excessive noise quit. So I bent them away from one another and no more noticable clicking/ticking noise.
Still hoping the GOV'T will ban the use of loud stereos with RAP music.
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