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2016 250 pro xs compression
I’m looking to buy a 2016 250 pro xs. It has a total of 296 hours and most have been under 5k rpm’s. Been cared for and all the required maintenance has supposedly be done by a certified mercury mechanic. Compression is,
1- 111
2- 112
3- 114
4- 115
5- 105
6- 108
i was a little concerned with the compression numbers, especially 5 &6. What do you think?
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I typically look for all numbers within 10% so nothing overly concerning that way. In terms of the actual numbers I was thinking these normally run 110-120 but someone with better knowledge of that will be along to help you out.
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Mercury 3L/4 Stroke/Verado Moderator
I'm just going to make a guess that the battery may have been weak. Charge battery fully, retest starting at #6 and working UP.
See if the results aren't better. And see if you can get the Serial Number.
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Unfortunately the guy selling it has already swapped it with a new four stroke and has it in a crate ready to be loaded up. I called a couple dealers and ran it by them and they acted like everything sounded fine. I guess I will be going to pick it up this weekend.
Last edited by Tyler Cole; 03-23-2023 at 08:02 PM.
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Mercury 3L/4 Stroke/Verado Moderator
The numbers are within specifications- just that the lower two are a bit lower than normally seen. Good idea to run it a bit after install, then recheck starting at the bottom and working up (with a battery of a bare minimum of 975 CCA for fishing applications).