Knocking

[thehunterooo]

thats would scare the **** out of me, i am quite paranoid when it comes to weird noises

[XJCasper]

This may not be your problem since you say it knocks when you start up. But a couple winters ago i got a build up of ice in the rad fan and it freaked me out when i heard a loud knocking when the engine warmed up. Then when i restarted, it was gone then after about 15seconds or so it would start back up. Took about 5 minutes of worried searching to locate the cause.

We were in the opposite direction. Daytime temps have been 65-75. Then they jumped back up to 90. Records for this time of year in my State, but not a big deal in others.

[XJCasper]

thats would scare the **** out of me, i am quite paranoid when it comes to weird noises

It did after just finishing up with the bees.