C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

'loud' clicking Injectors...

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Old Sep 9, 2004 | 12:01 AM
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Default 'loud' clicking Injectors...

A couple of the fuel injectors on my '92 'click' louder than the others and can be heard when driving next to a hard oject (i.e a concrete barrier) is this normal?
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Old Sep 9, 2004 | 12:10 AM
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In my experience, when an injector goes bad, it doesn't make much to any noise at all.

As far as some being louder than others...I don't know. Maybe I should have just kept my mouth shut on this one, haha.

I would try the "Screwdriver" test to listen for the differences in the injectors...and then you can pinpoint the odd units.

Someone with more experience may chime in.

<<From DIY.net's website...>>

"Listen for clicking sounds in rapid sequence to indicate a properly operating injector."

http://www.diynet.com/diy/ab_auto_fu...276265,00.html

Oh and I can only imagine what it's like keeping order with the military...I thought the general public was annoying, haha.

Last edited by DukeDiablo; Sep 9, 2004 at 12:25 AM.
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Old Sep 9, 2004 | 12:28 AM
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Thanks for the info...
Military members dont annoy me as much as the locals...but my "superiors" are a totally different story.
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Old Sep 9, 2004 | 02:19 AM
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Seems like alot of 92's have this problem. Mine included.
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Old Sep 9, 2004 | 07:49 AM
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Originally Posted by BAM92
Seems like alot of 92's have this problem. Mine included.
Mine, too. I've been told it's a common, normal occurrence, though.
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Old Sep 9, 2004 | 07:58 AM
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Default Ear phones

The ear phones that are handed out on many flights are great for finding problems in our engines. That what I use. They would be perfect for finding injector problems.
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Old Sep 9, 2004 | 03:39 PM
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on my 90 the stockers clicked, now i have brand new bosch in it, clicks too...normal...
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Old Sep 9, 2004 | 09:11 PM
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Old Sep 9, 2004 | 09:18 PM
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while looking for some info on TECH-1's i stumbled on this article:

http://www.idavette.net/hib/diageqp.html

in it it mentions:

"Ever had an engine noise you can’t track down? For example, ’85-’93 Corvettes sometimes suffer from an anomaly called "fuel-line hammer." The noise sounds kind of like a valve lifter that needs adjustment, but actually comes from fuel pressure fluctuations caused by the opening and closing of the fuel injectors. The fluctuation sets up a resonance in the fuel rails and flexible fuel lines near the engine that, mainly at idle, is audible from inside the car."

my 92's is audible too, but not "diesel engine" audible.
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