Just to piggyback on the topic since I recently did my valve adjustments... I've got a P0171 CEL code after 60 miles of driving after the adjustments. I tried searching for possible causes and am wondering if I didn't gap the valves correctly. I did 0.010 inch for all valves and I didnt reset the ECU afterwards. Would this be the primary cause for the CEL?? I appreciate all inputs and suggestions.

 

if the CEL light came on after you did the valve adjustment, I would recheck them and make sure its correct.

 

One is hidden under the VTEC coil cover, rear left side of engine

 

Someone forgot to mention that the engine should be warm before attempting the VA to allow for expantion of metal...??
I found out the hard way and wondered why my engine idled like a pig...lol

 

What what? Don't you mean that the engine should be allowed to cool?

 

"Adjust the valves only when the cylinder head temperature is less than 100 degrees F (38C)." - FSM

 

yea, you got that backwards...engine needs to be cold

 

You forgot about the fact that he's from Australia. It's opposite there.

 

I just did mine , the engine has been sitting in 40 degree temps for a few months, so it is definitely cold.

 

I personally would have waited longer. So, what were your findings?