compression test figures

[jtate]

yesturday i did a compression test on my tuck, and im not to sure what a normal reading is supposedc to look like. mine read like this #1-405, #3-400, #5-410, #7-385, #2-400, #4-395, #6-398, #8-400. what does these figures look like and what is a normal reading for these engines?

 

[sle2115]

yesturday i did a compression test on my tuck, and im not to sure what a normal reading is supposedc to look like. mine read like this #1-405, #3-400, #5-410, #7-385, #2-400, #4-395, #6-398, #8-400. what does these figures look like and what is a normal reading for these engines?

It is not so much the readings, but that there are none more than like 10 - 20% less than the others. Your readings look good to me. With a low of only 385, versus a high of 410, your lowest reading is 93.9% (6% difference) of your highest, nothing to worry about. Now if all your numbers were real low, then it would be a problem as well, but from what I have seen 400 is pretty good and seems to be around the norm for the 6.9 and 7.3.

 

[Exekiel69]

looks normal to Me. Also You don't want the higher reading and lowest with a difference over 20%.

 

[69oiler]

those are good readings. the 400 neighborhood is good and like they said within 20% of each other. looks good.