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

spark plug reading.

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Old Dec 9, 2003 | 05:21 PM
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devilfish
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Default spark plug reading.

all my plugs looked good exept no7. It whas black. I dont think its oil, cause its not "sticky" more like black "paint", or dark dark brown paint. You cant rub it off with your fingers.
Could that be a leaky injector? Or does oil behave like this aswell?

Oh and the car eats no oil whatsoever, or at least what I can see..

Thanks
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Old Dec 9, 2003 | 06:19 PM
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65Z01
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Default Re: spark plug reading. (devilfish)

That sounds like a good possibility; is fuel pressure holding at the fuel rail?
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Old Dec 11, 2003 | 01:40 AM
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Default Re: spark plug reading. (65Z01)

fuel pressure holds only about 2 days, then you have zero presure att the rail..

Normal?
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Old Dec 11, 2003 | 02:20 AM
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Default Re: spark plug reading. (devilfish)

Two day sounds fine for total bleed down.

Do they hold high pressure for a while after you shut off the engine or leak quickly to some low pressure?
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Old Dec 11, 2003 | 04:12 AM
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Default Re: spark plug reading. (65Z01)

got to check that today. I keep you posted...

thanks
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