2011 5.0 SC was running fine, gave it a quick wash after a lengthy drive after a fresh oil change. I went to pull it into the garage, and a rough idle, feels like a misfire. Engine light came on, and code is shown in the title.

Does this mean I need to replace the Cylinder 1 fuel injector? From what I can see, this means LR079542 and LR010767. Anything else?

Is this DIY-able on my 5.0 supercharged engine?

 

Also, I put some BG 44 cleaner in my system about a year ago to clean the injectors, based on the recommendations of this forum. Guess maybe it should have been more often

 

Silvertonesx24, did you by chance try and spray the engine bay down to get rid of any dirt there? If so, odds are, you got water inside a plug well and this is what you are experiencing. This is a "common" occurrence with the new plug on coil motors. You can think of it as having sprayed water on the distributor of older cars.

If you didn't spray under the hood of the car, I would still give the car a day or two and then see what you have. If the problem continues, then it is possible that you have a bad coil. Replacing a coil is definitely a DIY job. As for the injector, I know you need some special tools, so, unless yo ucan get your hands on them, that may be a bit more involved and potentially a shop job.

As for BG44, I find simply switching to a different brand of gas will accomplish the same thing as the BG44. I say this based on the fact that the BG44 is nothing more than concentrated detergents for the fuel system which are more than likely different than what you normally put into the car anyways with your fuel. Most people tend to stick with a single brand of gas and this can lead to build up of certain deposits. By switching to a different brand for a tank or two every few months, the different manufacturer will have a different detergent package and therefore clean up what the other is missing. In my case, I tend to stick with a brand locally called "Wawa". But, every so often, I will run a tank of ither Shell or Sunoco. I can't say that I have had any issues so far with the car and I am rulling over 111K miles.

 

I did not spray anything under the hood. It was interesting though as I had just driven about 50 miles, parked to wash in my driveway, and then on pulling it in the garage, I get the code and rough idle. No fuel smell, so I don't think it is a stuck injector.

I do use the same Sam's club brand of 93 octane gas always in the car, never filled up with anything else.

 

I do not recommend Sam Club gas as it is not a "Top Tier" rated fuel. Also, my dealer in Atlanta has had some cars with bad experience with the fuel in the past with both Jags and Land Rover vehicles. https://toptiergas.com/

 

Is it common to only receive 1 code? Although it was running rough, I didn't get any other codes, misfire codes, or restricted performance messages. Then again I was just simply pulling it into my garage from the driveway.

I found a great tutorial on injector replacement. This seems right on the edge of what I'd be willing to DIY. But not sure I want to go tearing into parts if some time and a cleaner is all that's needed.

https://www.jaguarforums.com/forum/f...p-step-220006/

 

Well scratch that, I started it again and got restricted performance, all 8 cylinders misfire, with cylinder 1 injector out of range. So I guess I'll be taking it to the mechanic this week.

 

You could probably save some money by sending the injectors to get cleaned. They do a low pressure clean check for proper operation. Most folks replace one bank at a time when the codes pin point it. Use top tier gasoline in the future.

 

https://www.injectorrx.com/fuel-inje...ctor-cleaning/