My honda accord 2000 v6 ex recently has had problems starting. It would start fine, but for some reason, it seems like it's having a hard time starting. Like when I put the key in and turn it, it feels like it's stuttering.

I want to get this fix ASAP. It's been happening for a few days. No check engine light on. Just changed the OIL also. I used different oil this time though. Not sure if that might be it.

Any ideas what this might be and how much it might cost to fix?

 

could be a fuel problem? or not getting the spark from spark plugs too.. or have u recently changed gas? like go from premium to unleaded? that affects too.. but off the top i honestly dont have enough exp to be able to tell u straight up what it might be...

 

I only went to synthetic on the motor oil. That's the only thing I can think of. I did a tune up about 1+ years ago and changed the spark plugs already. It shouldn't go bad that fast right?

Would the timing belt cause it to stutter like that? My car is at 105k right now and about to change the belt and water pump.

I also got an after market cold air intake system, for like 5 years now. Do those things go bad? I read somewhere that it might be the Manifold Absolute Pressure sensor as well. Not really sure.