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70hp.3cyl. merc. no spark at plugs / ...

Discussion Forum at MarineEngine.com » Mercury Mariner Outboard » Archive through July 04, 2009 » 70hp.3cyl. merc. no spark at plugs / how 2 ck cdi « Previous Next »

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dave hickman
New member
Username: cdmdave

Post Number: 1
Registered: 07-2009
Posted on Wednesday, July 01, 2009 - 11:17 am:   Edit Post Delete Post View Post/Check IP

merc. 70hp. 3cyl. 98` started in morning , shut off and now no spark at plugs. is there a way to ck. the CDI box with a elect. meter to see if it is bad?
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JB
Senior Member
Username: beckerjs

Post Number: 1748
Registered: 11-2005
Posted on Wednesday, July 01, 2009 - 11:30 am:   Edit Post Delete Post View Post/Check IP

that requires a dva adaptor to mearsure peak voltage, cheaper to rule out the other stuff and replace switchbox last. see this post
http://www.marineengine.com/discus/messages/12479/286867.shtml
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dave hickman
New member
Username: cdmdave

Post Number: 3
Registered: 07-2009
Posted on Wednesday, July 01, 2009 - 11:56 am:   Edit Post Delete Post View Post/Check IP

link must be gone. is there anything i should look or check for to rule out CDI box? small hole behind prop water comes out is that right?
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JB
Senior Member
Username: beckerjs

Post Number: 1751
Registered: 11-2005
Posted on Wednesday, July 01, 2009 - 12:20 pm:   Edit Post Delete Post View Post/Check IP

http://cdielectronics.com/Downloads/tabid/55/language/en-US/Default.aspx

see section manuals and troubleshooting, click on troubleshooting

or go here, click on merc, it will download
http://www.maxrules.com/fixignitionspecs.html
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'Bandit
Advanced Member
Username: timebandit

Post Number: 766
Registered: 09-2007
Posted on Wednesday, July 01, 2009 - 06:59 pm:   Edit Post Delete Post View Post/Check IP

check the kill switch and stator first.
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dave hickman
Member
Username: cdmdave

Post Number: 4
Registered: 07-2009
Posted on Friday, July 03, 2009 - 09:40 pm:   Edit Post Delete Post View Post/Check IP

ohms out red wire to black and reading 2.9 when i ohms out blue wire to black no reading do you think the stator has gone bad?

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