2002 Mercruiser 5.0 190 HP voltage to the coil but no fire

T

tros

Recruit
Joined
Sep 30, 2009
Messages
1
Hi! Hope you can help! We have a 1992 Chaparral 196 ssi with a Mercruiser 5.0 engine, boat would turn but would not completely start. Replace ignition switch, still won't start. Troubleshot, found we have voltage to the coil but no fire.

Additional question- if the coil is bad can we use an automotive coil?

Any help is appreciated!
 
Don S

Don S

Honorary Moderator Emeritus
Joined
Aug 31, 2004
Messages
62,321
Re: 2002 Mercruiser 5.0 190 HP voltage to the coil but no fire

Assuming since it's a 190hp motor, it's carbed and you have a Thunderbolt ignition system.
Follow this troubleshooting chart.

TB5Troubleshootingchart.png
 
S

swampy2646

Seaman
Joined
Sep 19, 2009
Messages
67
Re: 2002 Mercruiser 5.0 190 HP voltage to the coil but no fire

follow don's chart, do not use an automotive coil TB ignition uses a special coil.
 
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