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

compression check with headers

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Old Jul 20, 2020 | 03:07 PM
  #1  
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Default compression check with headers

Engines leaking oil so bad now it's not running right.

I want to do a compression check before I just replace the gaskets.

Tried it before, I had trouble getting the tool in there last time, don't trust the readings.

I picked up an SLP spark plug socket.

Any other hints?
Especially about getting the hose connected.

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Old Jul 20, 2020 | 07:27 PM
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You will want a 14mm adapter. It's about size of a spark plug there a couple different types.
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Old Jul 21, 2020 | 03:17 PM
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I use the Craftsman engine compression test with a hose. I take the shrader valve out and spin the hose into the spark plug hole. I have DRM 1 3/4 inch headers on my LT1
Here is a link with a good picture. Take shrader out, and turn engine over a few times to get your number.
Amazon Amazon
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