Check out some of my other posts if you need more tips and info. These engines are designed to run on four cylinder to conserve fuel, so when these lifters don't operate properly they get stuck. Depending on how long the ignition components have been in the , it may be a good idea to replace them as part of your regular maintenance schedule. P0300 indicated a random engine misfire, this can be caused by all kinds of issues. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing.
The transmission works great in all forward gears but it is very erratic when put into reverse. If diagnostics determine an engine misfire which is characterized by leakage through exhaust valve s , only replace the affected cylinder head s. See our article , if you need more assistance with this. A misfire is nothing more than a lack of combustion, which can be caused by poor fuel quality or metering, low compression, lack of spark or unmetered air entering the engine. The computer can also normally identify the specific cylinder in which the misfire has occurred.
Where do I go from here now? Any idea where I can get technical info--a. There are many things that can really foul up your day. I noticed that going uphill was causing it to hesitate and it was a pretty damn hot day. If concern is determined to be intermittent, check out our article on intermittent diagnosis and wiggle test connectors and wiring, attempting to duplicate concern. The chevy dealership says that the problem is with the fuel lifters not working properly. Im just sorting out my options before I take it to a dealership.
Do this after verifying that the spark plug is in working order. Check that the fuel injectors are functioning properly and activating. How serious is the P0306 code? Is P0306 a Serious Concern? The efficient burning of fuel is essential to engine operation as the combustion of fuel is what provides the energy to power the engine. Be sure to check its companion in the firing sequence. If still showing the same code change the wire with an adjacent cylinder and the same thing with the coil.
Feb 26, 2011 P0305 - Cylinder 5 Misfire Detected P0306 - Cylinder 6 Misfire Detected When a misfire occurs, engine speed will fluctuate. After that you would want to test the fuel injection system. Ok well I took it to a good repair shop, turned out all my spark plugs were bad. If there is anything that you would like to add please leave a comment below. The engine is also not firing all of the fuel, so raw fuel is also passing through Cylinder 6 into the exhaust.
This code will trigger the check engine light as follows: The misfire detection monitor, a software strategy built into the computer, is designed to detect an engine misfire. Good luck diagnosing the issue. I am having the same issue on my 2008 Z71 truck with the 5. In this case we are left with a P0306 in the computer memory. In some cases, the catalytic converter has gone bad.
Its been like 20k since the plugs were changed. Codes P0300, P0301, P0302, P0303, P0304, P0305, P0307 or P0308 are similar fixes just different cylinder. Most of the time one of those three things will end up being the problem. You might consider a compression test. It will often be accompanied by codes , , , , P0305, etc…. What are the common causes of code P0306? I thought about swapping coils to eliminate the coil as the problem. Now don't ask yourself; What should you do with P0306 code? The 6 cylinder only had a psi of about 100.
Feb 24, 2017 Bob, P0306 code means that the the vehicle's computer has detected engine's cylinder 6 is not firing properly. Same code, cylinder and idling problem. When the pressure is below the specification, the engine does not receive the proper amount of fuel and will start to lean misfire. The spark plugs and wires normally solve 95 percent of misfires, injectors and fuel pump about one percent. Chevy Silverado P0306 Definition P0306 is a cylinder specific misfire code, which means that Cylinder 6 is misfiring and causing it. How do you troubleshoot code P0306? The P0306 code is caused by a misfire on the number six cylinder. If there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders i.
P0306 is cause for concern and left unfixed can leave you stranded or make the vehicle virtually un-drivable. I took my car to the dealership because the check engine and check vehicle stability control indicators were on. There's a couple of things to keep in mind. Take a look at the electrodes and see if they are in good shape. Most Common P0306 Fixes If you follow the items listed above you should be able to fix the P0306. What causes the P0306 code? In later car models, the car's computer can usually keep the vehicle running, but the engine warning light on the dashboard goes on to warn the driver. That cylinder will still be contributing close to the same amount of power as the others.
Individual spark plugs, fuel injectors and valves should be carefully examined for the cylinder. Finally got a compression gauge that works. It is important to note that the misfire monitor is very reliant on the crankshaft position sensor signal. These particular codes indicate that there is a misfire in cylinder one, two, three, four, and five respectively. I've had the fuel rail out when I changed the injector and there isn't a valve on it to hook a fuel pressure gauge to. This causes the ignition coil to provide a spark and the injector to inject fuel into each cylinder at the right time. There were two missfire codes that were found.