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

Noisy Injector?

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Old Mar 23, 2006 | 11:26 PM
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Default Noisy Injector?

Is there such thing as a noisy fuel injector? I have a ticking on the driver's side bank that if I hadn't checked the rocker arms six times I would describe as a light tapping against the valve cover. Could this type of noise be a loud injector or am I looking for a more internal problem?

Thanks
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Old Mar 23, 2006 | 11:35 PM
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i have the same probelm..mine will pickup with throttle but its not deep in the motor...i can feel mine if the AFPR check and see if you can feel yours tickin there.....then you will know if its injector pulse or not. ive been told not to worry about mine.
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Old Mar 24, 2006 | 02:01 PM
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On my GF's 355 TPI we used Ford SVO pink top injectors and they are loud!!

I run the LS1 injectors on my miniram and they are loud as well.
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Old Mar 24, 2006 | 02:10 PM
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There is a little trick you might want to try. My dad taught me that you can get a stick (rake handle) or a short water hose and place it to your ear and the other end on where you think the noise is coming from. The noise will be louder where the problem is. They also sell a diagnostic stethoscope for this type thing.
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Old Mar 24, 2006 | 03:05 PM
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Only 1 noisy injector? I've got 8
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Old Mar 24, 2006 | 04:37 PM
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If these are stock injectors you shouldn't hear much tapping if any. Can't hear tapping on my 95 with stockers
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Old Mar 24, 2006 | 05:09 PM
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I have blue SVO 24# injectors and they too are loud as hell.

I noticed that they were MUCH louder when I swapped from a "stock" TPI intake to the superram setup - the SR seems to really magnify the injector pulses.

The "stick" trick works really well, just watch out for moving parts!

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Old Mar 24, 2006 | 07:35 PM
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yep same thing i have 24lbs and when i swaped from stock to edelbrock base it made it 5 times louder......im glad im not the only one...now i know nothin is wrong
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Old Mar 25, 2006 | 04:07 PM
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there was a post a while ago that mentioned that our early LT-1's had a lot of valve noise.

http://forums.corvetteforum.com/show...m_id=48&arch=1

there was also a post that i remember mentioning the fuel pressure regulator was noisy too....
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Old Mar 25, 2006 | 04:36 PM
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Most will make noise, especially the plastic ones, less material to insulate the niose, unlike Mutecs.
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