Compression for 1990 Evinrude XP 150

[Marty50]

I am buying a 1990 Champion with this Evinrude XP 150 on it. Owner says runs well and no problems. I had it compressioned checked and found that 2 cylinders had 95, 2 more had 90, 1 had a 100, and 1 lower cyl had an 85.

One mechanic thinks this is just a tired motor and should be fine. I am not sure if motor was at temperature or decarbed recently. Also this was done 6 years ago by owner with very similar numbers.

Any help would be awesome...hopefully this will be my first bass boat unless these numbers are not good.

[lkhartwl]

usually the lower left( looking forward from the back) is a tad lower in psi then the rest but not 15 psi. if nothing else decarb and then take the tests again. you may just need a ring job on all since you will have to tear down to do 1 you may as well go ahead and do all. check for scoring and any scratching on the one low cylinder. hope this helps some

[ChampioNman]

All in spec. Depending on how big the Champ is don't expect a rocket sled. Good motor, just likes the fuel to keep he hull cruisin. I know had a '89 GT150 on a '89 201 and speedo 63 but gps 54-56. Not bad for a 150 powered 201.

On a smaller Champ theXP should rock it. We don't do hop up here but the boys at http://www.screamnfly.com do and you can tweak out that 150 with some $$ and mke that Champ fly.

[Marty50]

Thanks for all the info!!!