Very understandable, and I've actually been in that situation myself in the past. All that's needed to keep a fluid conversation going is to mention that right away, because when there's no response, we don't know if you have no interest in what we write, or perhaps you're not seeing it, or whatever else the reason might be for not responding to the suggestion.The problem is that it is my daughter's car and don't get to have access to it all that often. ….
Yes, pulling the fuel pump relay is exactly the way to prep for the compression test. Then after it shuts down, vacuum and clean the area around the sparks, and remove all of them. Thread in the connector of the tool completely, and have a helper crank while you watch the gauge. While cranking, the gas pedal is pushed all the way to the floor, and it typically takes no more than 4-5 cranks to get to get max pressure on the gauge, so cranking should be stopped after 5 revs. Be sure to reset the tool back to zero PSI before testing the next cylinder.what would I need to disconnect to keep the engine from starting when performing the compression test? Pull the fuel pump relay and run the car until it's starved for fuel?
OP did have tried PEA cleaner.I had the same problem with my daughter's Pontiac, did the same swapping of coils, etc. Finally,
I threw in a bottle of Techron injector cleaner, code went away. Try the simple stuff first.
And, while not mentioned initially, did add a bottle of PEA cleaner to the gas tank and also used an intake cleaner, as well.
Yes, that's true, and would always be done for a compression test anyway. But if fuel pressure isn't relieved, fuel will be spraying while the vehicle cranks during the test, which is the reason the fuel pump relay should be pulled and the vehicle run until it stalls.If you pull the plugs it will not start, no fire, no start.
There is nothing at all mentioned about air in the CX-5 FSM, for the replacement procedure of any fuel system component. And there is most certainly trapped air in a portion of the fuel system, right after components are replaced.… Starving the high pressure pump may introduce air which can be a big problem. ...
I bought 2014 CX-5 Grand touring at 204000miles. Was good maintained one owner car. But has this P0301 code when I bought it. Code comes and goes as you have mentioned. Currently car has around 211000 miles. Drives perfect though.New issue, and may be totally unrelated. My daughter said that the backlighting for the AC controls did not come on the other night. Only happened once.