90hp Evinrude 1983 model

[Squeakk]

https://www.youtube.com/watch?v=Zup0yBf511U

Here's a video of what my Motor is doing.. It will Crank and Idle just fine.. Just when I go to accelerate it starts to bog down or ( Stop and go stop and go )..
I've got 105 compression on one cylinder and 130 on the other 3.. I was told 105 wasn't horrible and that it shouldn't be causing this much of a problem.. I'll add right before this started I wasn't ever able to get RPMS over 3200.. ( 3200 being max on best conditions. I just got it out of the shop and the guy said he changed one of the power packs.. Most everything on this thing is original I think. What are some easier tests that I can do myself to see if I can get this thing running better? Because all of the shops around me are completely backed up and will be 7-9 weeks before they will even take a look at it. Any help would be greatly appreciated..

 

[flyingscott]

Make sure you have spark on all 4 cylinders. You may want to pull the head or bypass covers on that bad cylinder 105 is not promising

 

[racerone]

Agreed----That sounds awful.------Perhaps test run with the cowling off.------Perhaps a timing light hooked up to plugs one at a time to find possible ignition miss.--Pull the cylinder head off.-----Could be a blown head gasket.------A 25 PSI difference is a clear indication of problems.------I say broken pieces of piston ring all over.

 

[jimmbo]

A thorough check of everything, as there might be more than one thing causing it to run like that

The cowl was an 82