Misfiring, runs like crap in morning

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exp500

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Do a Live Data scan on a road test, should show you whats goin on. If thats not possible change cap/rotor and coil wire.
P0300 likely. nice to see graphing of codes or fuel trims, other sensors that live scan picks up when missing.
 

YukonGTmaster

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This may seem like a no brainer, but how does your air filter look? I’ve seen those things soaked in red K&N juice.
 
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Swagfu

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Mine was running so bad that it wouldn't start sometimes. I would go out in the morning and it would crank like crazy and not start. Go out about 1 and it would fire right up. Changed the crank sensor and cam sensor and now it starts right up every time. Was driving me crazy. Maybe something to condiser.
 

exp500

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Fuel pressure test with long hose.! Key on eng off #/time till it drops 10#. Driving#. And When missing#. Book is 62-66#
 

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