69 R/T
Well-Known Member
I decided to do a cylinder pressure test on my 69 440 just to see what it looks like. The number 5 and number 7 cylinders are pretty low, everything else is between 145 to 155. The number 5 is only 100 psi, and number 7 is 130. I was losing light and I needed to put the car away, so I put it all back together and drove it in the garage. Now my question is, do I need to remove all the spark plugs again to test those two cylinders or can I just pull those two plugs and do the oil squirt test? The car has got the factory manifolds on it and it's a real bastard to get those plugs out and screw the hose in. So what do you say guys?