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Livebai8
Full Access Member
Yeah...just by plugging with my thumb...
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Now what?
- Thread starter Livebai8
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rockola1971
Full Access Member
40 psi at idle is not good. Should be 50psi+ Injector hung leaking or fuel pump bad.
George B
¯\_(ツ)_/¯
Is it a flex fuel? If so, I believe 42 is normal when running.
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Livebai8
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OP
OP
Livebai8
Full Access Member
How would I know if it's the injector(s)? I haven't detected any gas leaks anywhere.
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ks03
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How recently before this stared did you replace the knock sensors?
Did you install new intake gaskets at that time?
Did you install new intake gaskets at that time?
rockola1971
Full Access Member
Gonna need a scanner to check 02 sensors and see if one bank or the other is running major rich.
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Livebai8
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Yeah... I just have a reader I got from sears...but no codes are being thrown...the code reader is how I knew my knock sensors needed replacing...but since then no codes. I was able to drive my Tahoe down to Galveston (about 145 miles) and back with no issues or dying out. I'm probably going to just replace the fuel pump and fuel pressure regulator all together and quit guessing. My Tahoe has 218k on it anyway.
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