110 evinrude bogging down

recce43

recce43

Petty Officer 3rd Class
Joined
Jan 7, 2010
Messages
75
:mad: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

Joe Reeves

Supreme Mariner
Joined
Feb 24, 2002
Messages
13,262
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

recce43

Petty Officer 3rd Class
Joined
Jan 7, 2010
Messages
75
Re: 110 evinrude bogging down

going out to pull the plugs
 
recce43

recce43

Petty Officer 3rd Class
Joined
Jan 7, 2010
Messages
75
Re: 110 evinrude bogging down

plugs look good have to go buy a compression gauge .
 
recce43

recce43

Petty Officer 3rd Class
Joined
Jan 7, 2010
Messages
75
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

countvlad

Chief Petty Officer
Joined
Jun 29, 2009
Messages
439
Re: 110 evinrude bogging down

recce43 said:
spark plugs look good spark going to every cylinder compression tested 3 cylinders are 90 one is 65 psi
Click to expand...

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

Joe Reeves

Supreme Mariner
Joined
Feb 24, 2002
Messages
13,262
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.
 
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