It can be done but with a couple of riders. If your front bumper is coming off it can be done fairly easily. If not it is a bit more difficult on a 98-00 P80. If the bumper is staying on, the 98-00 years are more difficult to do compared to an 850 as the 3 lower mounts are hard to get to has they ar...

Valves only burn in the blink of an eye. One moment the cylinder holds compression, the next it doesn't. I think I would check compression first, then check if spark is getting through to the plug while I have it out (wire could be bad). Or you could swap wires if there is enough length, I haven't t...

120 sounds low but not burned valve low. Might want to check a couple more make sure they all read close to 120 on that gauge. Good idea on the injector. You can swap injectors around and see if the misfire follows the injector, but I would be careful not to tear any of the rubber seals. Some people...

Can you feel the misfire or is it just being reported by P0302?

Super useful to test all cylinders at the same times, compare the readings.

Always a hassle getting it snug I agree.
I tighten it by turning the rubber hose on mine. Oh, also good to put an o-ring at the top of the threads to help seal it, mine has that.

#1 is closest to the timing belt.

Rocket99 wrote: ↑21 Aug 2020, 14:37 From the right (driver side) the cylinders are numbered 1,2,3,4,5 from the driver side to passenger side. Correct ???

Correct for a Right Hand Drive car.
Not correct for a Left Hand Drive car.

Well, cylinder #4 has been thoroughly checked !

Well done. You sat back and processed it, and found the path to Volvo Halla.

I think I’ve just done a similar blooper on my 1998 project