110 evinrude bogging down

[recce43]

vro 110 1986 worked fine all day 5200 rpm did some slow trolling then opened it up worked good then at the end of the day did some trolling then i shut down and drifted when i started it up only give me 3000rpm full throttle fuel blub has hard any ideas

 

[Joe Reeves]

Re: 110 evinrude bogging down

check compression should be approx 100 psi and even on all cyls check spark should jump 7/16" gap on all cyls with a strong blue flame...a real snap what do the spark plugs look like

 

[recce43]

Re: 110 evinrude bogging down

going out to pull the plugs

 

[recce43]

Re: 110 evinrude bogging down

plugs look good have to go buy a compression gauge .

 

[recce43]

Re: 110 evinrude bogging down

spark plugs look good spark going to every cylinder compression tested 3 cylinders are 90 one is 65 psi

 

[countvlad]

Re: 110 evinrude bogging down

spark plugs look good spark going to every cylinder compression tested 3 cylinders are 90 one is 65 psi

that's not good... its time for a rebuild... the pressure difference between cylinders should be +-10% good luck

 

[Joe Reeves]

Re: 110 evinrude bogging down

A 25 psi difference between the highest and lowest cylinder reading is not a good sign.

Remove the cylinder head in order to inspect the pistons, cylinder walls, head and block sealing surfaces, and in particular the head gasket.

Hopefully you simply have a failing head gasket. Let us know what you find.