98 civic with a d16y8. Misfire in #3. CEL is blinking and code P0303. This never occured before the valve and head job which were for a blown head gasket. Any ideas..? I have spark, but not sure if i have fuel or air.

Also, new valve seals and valve adjustment.

 

Got new plugs and wires. Cap and rotor seem fine, but i don't want to buy a new set if it's something else. Like I said, I have spark.

 

Did you install the cap rotor and wires?

could be as simple as a bad wire.

 

new plugs are installed. i thought it was a wire because the #3 plug felt like it wasn't "clicking" in, but still have the same problem with the new wires. I haven't changed the cap, nor the rotor. I'm wondering why it would misfire after this and never once before. I didn't want to just buy new parts. I'm trying for a budget. I'm just a student. Could it be a bad O2 sensor or a bent valve?

 

and I triple checked my firing order on the dizzy and the engine. everything is right.

 

did you dubble check the valve clearance... if the valve is too tight it will missfire and if it is real loose it is a sign that the valve may be bent ..

 

Isn't that something for the guy who did the valve to check?

 

every body f' s up know and then he could have the # 3 valves to tight

 

Damn I don't want to pull the head again but it seems like that's what I'm gonna end up doing.

 

don't pull the head just remove the valve cover and check the clearance

 

Ok I'll have my cousin do it tonight.

 

We got it! Valve was too tight. Runs great now. thanks for the help.

 

cool glad to be of help

 

that's why i love this site.

 

feeler gauge and a chilton manual, do your own maintenance and the questions will steadily disappear.

 

For some reason it seems like the shops always leave a few too tight. And they surely don't "adjust" them with any type of accuracy (unless maybe they're shimmed).

 

My cousin is much more mechanically inclined than I am, especially on Hondas. Glad to have him in my corner. I usually try and do things myself, but I felt this was over my head.