1996 Cobra Stern Drive 454 Won't Start

baldwinjim

Cadet
Joined
Jun 3, 2012
Messages
11
Hey all,

I've had the boat out 2 times this summer and had some starting issues. The first time I took it out, it started right up and after stopping and killing the motor, it wouldn't start. I was able to finally get it started by repeatedly turning the ignition to the start position. The rest of the day, not a single problem. Then yesterday, I took her out and ran all over the lake, starting and stopping the motor with no problems. Then, I shut her off and she would not start after that. The ignition switch would power the dash in the on position, but nothing in the start position. It's a 3 position switch. I checked all the connections and nothing is loose. Got a tow back to the ramp and brought her home. I thought it may be the switch, so I pulled the it which has 3 posts on it labeled B (Battery), I (Ignition) and S (Start). I shorted from B to S and the dash lights up and I can hear the fuel pump. However, when I short the B and S, all I heard was a faint click. The kill switch was installed, and pulling kills the dash (B to I), so I don't think it is the kill switch. The neutral kill switch was by-passed by the previous owner (I know, not good and will replace it when I figure this out). I have OHM tested the switch and it seems to be making the connection. However, I did not check B to I and S at the same time. Unfortunately, the boat is old and it seems that some of the original wiring has been modified. Battery is fairly new, but I did not verify that it is fully charged. But, I did not run anything while the motor was off, radio, etc. So, where do I go next? It's fuel injected, not sure if that makes a difference.

Frustrated,
-Jim
 

Howard Sterndrive

Rear Admiral
Joined
Nov 5, 2008
Messages
4,603
Re: 1996 Cobra Stern Drive 454 Won't Start

good troubleshooting! I'd be starting at the key switch too. It sounds like you have S (start) and I (Igntion) backwards in your story though.

regardless, I would move to the other end of the wire connected to S and look at the start relay in the engine compartment - that's where that wire goes. It looks like this #68
relay.jpg

However, in between key and start relay, is the neutral safety switch in your shifter. It allows the Start circuit to function only with shifter in neutral. That switch may be bad. But go to the relay next so you don't needlessly rip apart your shifter. But some good ol fashioned wiggling of the shifter handle in N might reveal an issue too.
 

baldwinjim

Cadet
Joined
Jun 3, 2012
Messages
11
Re: 1996 Cobra Stern Drive 454 Won't Start

Yeah, I got them confused. I edited my original post to reflect.
 
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