Have you checked the intake manifold. There's a YouTube video keeps popping up on my recommended viewing that said a small leak there gives rough peaky idle and crap fuel economy.
https://youtu.be/7KNGx9RQQAw
This one.
Have you checked the intake manifold. There's a YouTube video keeps popping up on my recommended viewing that said a small leak there gives rough peaky idle and crap fuel economy.
https://youtu.be/7KNGx9RQQAw
This one.