David Ashworth

Slight miss when car warms up after 10 minutes check and changed all coil packs and Spark plugs cleaned EGR valve and ports check for all vacuum leaks PCV valve is checked Miss gets worse as car warms up more any suggestions would be much appreciated

David Ashworth

also there are no code showing

David Ashworth

also compression is good in all cylinders 190 or above

David Ashworth

and all fuel injectors check good on pressure and all are clean

Kris9884

Lol well it sounds like you've checked pretty much everything that I would suggest. Since it gets worse while warming up I would check for a bad o2 sensor or cat, maybe even a crank sensor or a combo of all of them... Good luck man.

Kris9884

Oh and a really obvious and dumb suggestion would be to make sure your battery terminals are tight. A loose or bad ground can cause almost any problem it seems.

Tosh

It gets worse as it warms up? Have you ever done a valve clearance adjustment on it? How many miles are on it?