I rented an Autozone gauge yesterday to perform my first ever compression test on my 301,000 mile Accord. It had a fitting that could be screwed into the head or you could directly screw the gauge in. I used the fitting. At some point it escaped me that the fitting detached from the guage staying in the #1 cylinder. I noticed when I was done and the spark plug boot was about 3 inches from flush with the valve cover as it should be. I spent 2-3 hours trying to get that fitting out. Found success using small piece of duct tape on spark plug and screwing it into fitting and torquing it out.
My question is, could the extra length of the fitting cause a different reading when measuring compression?
I measured 110, 115, 115, and 60 in the number 4 cylinder, which wouldn't have been affected.
Still wondering if the fitting would change anything?
Can having the tool not tight enough mess with the reading?
In the low compression cylinder 60 psi was reached quickly but it seemed if I kept cranking it it would eventually reach 110. If 110 can be reached after 20 cranks, is that comparable in anyway to the other cylinder reaching it in 4?
I poured different amounts of oil (hard to control small amounts) in the cylinders and compression shot up in excess of 200 in some cylinders.
Bad rings. Does more oil in the cylinder raise compression correspondingly?
What would a healthy F22A4 read without oil in cylinders?
Thank you,
I am pretty sure to the answers to most of these questions, but would like some feedback to confirm what I am learning.
My question is, could the extra length of the fitting cause a different reading when measuring compression?
I measured 110, 115, 115, and 60 in the number 4 cylinder, which wouldn't have been affected.
Still wondering if the fitting would change anything?
Can having the tool not tight enough mess with the reading?
In the low compression cylinder 60 psi was reached quickly but it seemed if I kept cranking it it would eventually reach 110. If 110 can be reached after 20 cranks, is that comparable in anyway to the other cylinder reaching it in 4?
I poured different amounts of oil (hard to control small amounts) in the cylinders and compression shot up in excess of 200 in some cylinders.
Bad rings. Does more oil in the cylinder raise compression correspondingly?
What would a healthy F22A4 read without oil in cylinders?
Thank you,
I am pretty sure to the answers to most of these questions, but would like some feedback to confirm what I am learning.