Hello, I've been trying to get my 2000 Honda accord to run right, I have a miss fire on cylinder 4, if you give it a small amount of gas it runs smooth but at idle and hard acceleration it has a dead miss. I have replace the distributor, cap, rotor, plugs, wires, timing belt, #4 injector. Is it possible that if the timing is off a tooth, could it mess with only one cylinder, I don't think that's possible but at this point I'm at a loss. Any info would be a big help thanks.

 

checked your valve clearances lately?

 

Just did a valve adjustment.

 

Compression check.

 

Has the car overheated lately ?

 

So what came first....the valve adjustment or the code for the miss fire (p0304)?

Any other codes being given?