Intake manifold bolts... Came loose?

[Opeth]

I am going through the fun process of tracking down a misfire on #6 and stumbled across someone's post who noted upon going after the fuel injectors noticed the rear intake manifold bolts were only hand tight. Well upon playing the coil swap game a few minutes ago and throttle body cleaning, I figured I'd check mine since it had seemed rather noisy on the injector side of the engine. I said something the other day herby gf how I thought it seemed kind of loud for injectors and the misfire started in the touch less car wash after the under carriage wash.

I was able to reach the rear two bolts near 5 and 6 without going crazy having to remove the PCM out of the way. The bolt between 4&5 was maybe hand tight. I got at least 1-2 full rotations on the socket, and between 5&6 was even looser and got 2-3 full turns. No idea if this is going to cure my problem yet, but the rest of everyone might wanna check their intake manifold bolts.

[JMHinAZ]

Odd, no other recent work in that area?

[Opeth]

Nope, never touched anything in the engine bay till recently besides oil changes, throttle body to be cleaned, and transmission flush.

Tightening them down has not cured my misfire either, nor has swapping coils. I have an extended warranty for another 9k miles, a $100 deductible is easier to pay than to keep throwing coin at parts I don't know will fix it.