Re: 2012 LR4 v8 HSE Lux
I recently had a check engine light and the computer indicated I had some engine misfires although, at the time, the engine was running great.
To save some money, I decided to change the spark plugs myself. It was only after my very amateur installation I learned that I needed to "gap" the spark plugs, which I did not do.
Now, the old girl starts very rough. The RPM gauge jumps all over the place before idling and often it doesn't want to start at all until after a few tries. Once running, she runs great and has no issues. It's the cold starts that get her.
I took her to my local mechanic to diagnose and they said it was likely the fuel injectors or fuel pump, or both. They didn't have the tools to diagnose so they told me to go to the dealership.
Anyone else run into this issue and find a resolution? Does it sound like a fuel injector issue or fuel pump issue? I am suspect because other than a check engine light and the spark plug recommendation from the computer, she ran perfectly fine before I touched it.
Another thread I read said something about a potential air intake issue. I am a very amateur mechanic, so I'm wondering if I may have tampered with the air intake when I was taking stuff apart to get to the spark plugs? Thanks in advance.
I recently had a check engine light and the computer indicated I had some engine misfires although, at the time, the engine was running great.
To save some money, I decided to change the spark plugs myself. It was only after my very amateur installation I learned that I needed to "gap" the spark plugs, which I did not do.
Now, the old girl starts very rough. The RPM gauge jumps all over the place before idling and often it doesn't want to start at all until after a few tries. Once running, she runs great and has no issues. It's the cold starts that get her.
I took her to my local mechanic to diagnose and they said it was likely the fuel injectors or fuel pump, or both. They didn't have the tools to diagnose so they told me to go to the dealership.
Anyone else run into this issue and find a resolution? Does it sound like a fuel injector issue or fuel pump issue? I am suspect because other than a check engine light and the spark plug recommendation from the computer, she ran perfectly fine before I touched it.
Another thread I read said something about a potential air intake issue. I am a very amateur mechanic, so I'm wondering if I may have tampered with the air intake when I was taking stuff apart to get to the spark plugs? Thanks in advance.
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