Mercruiser 3.0 Liter Engine Not Starting

B

Bthomasso

Recruit
Joined
Jul 1, 2004
Messages
2
17' '95 Capri Bayliner with Mercruiser 3.0 Liter Engine Not Starting. Pristine motor with tight connections and no corrosion whatsoever. Turns over; however no spark. Replaced plugs, ensured tight battery connections. Engine "shakes" a few times but does not ignite. Gas odor is clearly there. Battery fully charged. Any ideas??
 
JB

JB

Honorary Moderator Emeritus
Joined
Mar 25, 2001
Messages
45,907
Re: Mercruiser 3.0 Liter Engine Not Starting

To I/O
 
Fishermark

Fishermark

Vice Admiral
Joined
Oct 19, 2003
Messages
5,617
Re: Mercruiser 3.0 Liter Engine Not Starting

I know you mention it is a 95, and I assume it is electronic ignition, but is that a correct assumption? If so, is it the Thunderbolt IV? Someone posted a site recently with a step by step proceedure for diagnosing that ignition, you may do a search. If it is points, then a new set of points and condensor should get it going.
 
R

Rickles

Petty Officer 2nd Class
Joined
Mar 24, 2004
Messages
101
Re: Mercruiser 3.0 Liter Engine Not Starting

You have a problem with either the module or the pole piece/pick up coil.The pick up coil is located in the dist.It has the 4 triangle shaped points in the center of the dist.There are 2 wires going to it.1 green&1white.If there is a brown substance oozing out of the white insulation tape odds are its the problem.I've done 3 in the last week with the same problem.You'll need to pull the dist.to change it.Modules do go bad but more often it's the pick up coil
 
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