I have reset the light numerous times and still get the same codes P0300, P0301, P0302, P0303, and P0171. Went to start truck and wouldnt. It will smoothly accelerate and decelerate in neutral. If you see arcing, you need to change both the plug and the boot. However if cylinder 3 has a compression of 80psi, that is more than a 10% difference and there may be serious engine problems.
The computer read out cylinders 5 and 6 misfiring with the list of causes: intake manifold gasket, mass air flow sensor, plugs, wires, coil. As for the absorption canister problem, there is no absorption canister. I am by no means a mechanic, but I can do my own work. It said a misfire on the number three cylinder and the evaporative canister system needed to checked. There is some fluid that comes out of the tailpipe, though not much. Start with the simple and check the spark plug wire first, then work your way to the coils and module.
The light came on, and I hadn't felt any problems. What you would see if you could view the picture is two spark plugs that came out of cylinder 5 that from the bottom of the threads all the way to the gap and ground electrode are completely black. I never figured it out since I ended up selling the car. But the acceleration in gear is awful and makes the car run worse; I can definitely feel a lack of power. May 27, 2011 It could be the coil, or the ignition module where there coils sit on.
Still runs rough misfire especially rough at idle, hot and cold, loss of power and check engine light with P0304 code. Like the above person said, I bet it's a coil pack ,bad plug or wire. Remove the wiring plug, remove the bolt … and then wiggle the coil from attop the manifold. Gen 4 Tauruses 00-07 especially are susceptible to cracked fuel line connections right where the lines clip into the fuel pump assembly strainer, pump, etc. Ran great for 9000 miles. You should also check your spark plugs for signs of arcing or carbon tracking on the porcelain when you take them out. Okay, lets go check the fuel pressure.
Changed crank sensor, cam sensor, tps sensor, iac, throttle body, dpfe sensor, intake gaskets, swapped injectors, changed coil packs and changed pcm. I have no way to conduct a smoke test. Keep in mind purchasing low quality parts will sometimes hurt your problem rather than help it. There is a coil 8 of them, 1 for each spark plug that goes on each spark plug. Replacing plug wires is also a good idea at this time. After getting those three things done-there was one bad spark plug that I could tell just from the difference in color-I started the engine and nothing significantly different.
The cleanest one is from one of the good cylinders. In that case you need to change the valve cover gaskets and the O-rings surrounding the spark plug wells. Thank u for any advise. I took it up and had them run the computer on it. Have the computer scanned for trouble codes. Any ticking noises while the engine is running? Another important factor to consider is when the O2 sensors are going lean.
In order to count as a misfire, an event has to occur during a misfire check and have a certain acceleration profile, so the vast majority of events are not considered misfires even if they are being caused by one. If any one of those is absent, mistimed, or sub-optimal, the cylinder will misfire. If you are out of ideas and have not replaced the plug wires, do so. Cleared codes and changed wires and plugs. Anyone help or have any ideas? You will see them, round top with a wire harnesplug coming from each one. Also, check the fuel injection, if there isn't enough fuel to drive the cylinder it just sits there this is also a common reason people fail their … e-checks.
I suggest that you perform a compression test. Misfires Basics and Intro General Information What is a misfire? I have obviously failed this test! Also allowing for extra rocker arm movement which could be your chirping noise and cause a rough idle. Cigar Smoke Test Video: Fuel System If you have a P0300 random misfire code, start by checking the fuel pressure at the rail with the Schrader valve and an inexpensive fuel pressure gauge. Note there is a refresh button at the top which you may want to use periodically while driving to update the data. Does anyone know how to successfully get to that plug so I can shove the replacement wire firmly on it? After that I cleaned the mass air flow sensor and throttle control sensor but that didn't work either.
I know this must tell me something but I'm not sure what. If one is stuck open the pressure will go down fairly quickly. If the check engine light is on it should kick out a 200 code for the above problem. Your rings seem good due to the good compression. If the misfire travels to the cylinder of the two switched plugs then it's the plug. Except for a little corrosion from a yrs worth of non use, the plug looks good.