Sometimes sputters at idle and during acceleration

Hello,

This sounds to me like you might have a blown head gasket. I have included a few links below for you to go to.

https://www.2carpros.com/articles/head-gasket-blown-test
https://www.2carpros.com/articles/symptoms-of-low-compression
https://www.2carpros.com/articles/how-to-test-engine-compression

Please go through these guides and get back to us with what you are able to find out.

Thanks,
Alex
2CarPros