Hey all,
2000 Honda Accord 2.4 manual transmission. Was driving it home when it started misfiring. (Bucking, losing power, flashing check engine light) once I got to the mountain to get back to my house, it lost all power. After letting it sit on the side of the road, I was able to get it back home. Ran the codes, it’s giving misfire on all cylinders. Here’s what I’ve tried:
New spark plugs New wires New distributor Conducted compression test (all good) Conducted fuel pressure test (all good) Checked valve lash Checked timing (new belt, not out of time) Tested MAP sensor (testing good, but who knows) Sprayed for vacuum leaks
I’m at a loss here. Now, when you start it cold, it will run for a few seconds, then sputter out and die. Once it warms up, it will idle fine, but will not rev. If you spark some starter in the air box, it will rev right up, which I think is interesting. Could that mean fuel issue? Any ideas would be helpful!
Sounds like a fuel pump issue considering you’ve already replaced everything to do with spark
Can you take the pump and and check for voltage or a even simpler question can you hear it prime the first time you turn the key to the on position (not crank it just turn the key to on and see if you can hear it go whirrrr)