Cyl no. 5 misfire?

[unknowna4]

So I pressure tested the car, switched the coilpacks, switched the ICMs and I'm still getting loads of misfires on cyl 5. In every gear soon as it hits 15 psi the car will start misfiring like hell and drops to 5 psi till redline. Any ideas? Thanks
PS has new plugs gapped correctly as well.

[AMC]

checked the plugs? try process of elimation, swap that plug with another one from a different cylinder, see if it misfires in the different cylinder

[AMC]

my plugs were all new as well and one ended up being bad from NGK

[kengvang]

i had that same code happen to me. it turned out to be a bad coil power module. they are located on top of the air filter box. they tend to go bad on our cars.

[quickaudi]

double check the torque on #5 as well as the gap