1991 Evinrude 150 HP Compression Test

H

haxsaw

Seaman Apprentice
Joined
Aug 13, 2002
Messages
39
What are the steps I need to take to do this, is there anything I need to make sure I don't do during the test?
 
S

S.T. Marine

Petty Officer 1st Class
Joined
Aug 13, 2002
Messages
248
Re: 1991 Evinrude 150 HP Compression Test

Remove all the plugs. Keep spark plug wires away from you so you dont get shocked during the test. Attach the gage and turn the motor over several times 5-6 to get the reading. Log info and repeat for the other cylinders
 
B

Backlash

Chief Petty Officer
Joined
May 16, 2001
Messages
586
Re: 1991 Evinrude 150 HP Compression Test

Generally a good idea to disable the ignition before cranking the motor. ;) <br />Backlash
 
S

S.T. Marine

Petty Officer 1st Class
Joined
Aug 13, 2002
Messages
248
Re: 1991 Evinrude 150 HP Compression Test

Ahh if your carefull no need...... Or else zapp.....!!!
 
B

Backlash

Chief Petty Officer
Joined
May 16, 2001
Messages
586
Re: 1991 Evinrude 150 HP Compression Test

Actually, I've heard of instances of blown power packs as a result of cranking with ungrounded plug wires. <br />Backlash
 
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