Spark at plugs when key is turned once

rtpassini

Chief Petty Officer
Joined
Nov 27, 2008
Messages
508
Im trying to figure out why my 71 merc 800 isnt starting. So i checked for spark. Even turning the key BACK to the upright position made if spark. Basically, anytime you turned the key it would spark. but i also did while cranking. Is this normal?
 

sportsmanphil

Petty Officer 1st Class
Joined
Mar 8, 2009
Messages
257
Re: Spark at plugs when key is turned once

Im trying to figure out why my 71 merc 800 isnt starting. So i checked for spark. Even turning the key BACK to the upright position made if spark. Basically, anytime you turned the key it would spark. but i also did while cranking. Is this normal?

Doesnt to me, it should require a signal from the trigger to throw a spark.
 

Laddies

Banned
Joined
Sep 10, 2004
Messages
12,218
Re: Spark at plugs when key is turned once

Any battery power CD will spark on the cyl. what the rotor is at whenever the key is turned on as it is the Monroe effect and fires when ever there is a voltage flux in the system.
 
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