Starting problem, NO SPARK!!

[bbgun24]

Hello all,

I have a 1990 4.3 L w/ Spitfire ignition. I just replaced the motor after having a cracked block and took it out last night for the first lake test drive. The boat ran perfect for about 20-30 minutes. I was making the last pass to head in so I decided to she what she could do, I started working up to full throttle and got to about 3/4 and it just shut off. Stopped dead in the water. I now have no spark. It was pretty late by the time I got back to ramp and really didnt get time to troubleshoot to much but just wondering if anyone has any ideas where to start?? I did not see any lose connections. Possibly the coil pack/ignition module?? Maybe the timing sensor?? It is the Spitfire ignition so Im not really sure where to start at this point. Thanks in advance.

 

[HT32BSX115]

Re: Starting problem, NO SPARK!!

Howdy,

Well the first place I would look IS the "Module" (assuming you have power to it and have done the Service manual procedure for no spark)

Unfortunately, you may not be able to buy that module (and probably wouldn't want to because of the price) because it's not available anymore unless you find one collecting dust on a dealers shelf that is going out of business etc........

Your only replacement choice may be to get a different marine (MSD, Mercruiser, etc) distributor.

Sorry about that....


Rick

 

[bbgun24]

Re: Starting problem, NO SPARK!!

Yup, I have voltage to the module and ground. I will check the timing sensor after work and see if Im getting voltage from there as well. If so then it looks to be the module. Bummer!!

 

[bbgun24]

Re: Starting problem, NO SPARK!!

I think I have found the problem. This is the crankshaft sensor. The timing ring goes between the tabs and tells it when to fire. Looks like the center tab has been broken off?? But not really sure what it is suppose to look like. The diagrams are hard to tell if there are suppose to be 3 tabs or not. Anyone have any input?? Thanks.

 

[HT32BSX115]

Re: Starting problem, NO SPARK!!

By George I think you may have found it!!


That appears to be the "Sensor and Locator, Crankshaft, OMC # 986564

#11 below....

I did a little searching around. (which you can do also btw)

and found the following, http://www.boats.net/parts/detail/omc/O-0986564.html



From Marine engine.com:

#11 ? 986564 ? SENSOR & LOCATOR, CRANKSHAFT (1 per engine)

0986564
​

Part replaced by OMC3853990
​

Unavailable

3853990
​

L/P 77.16
​

Unavailable

Unfortunately, you may have to go to a boat junkyard to find one unless you locate a dealer has one collecting dust on the back shelf........

It crosses to OMC 3853990 but it looks like that one is not available either.


I am kinda surprised that someone doesn't make some of these parts......this one was used on all the following models...

0986564 SENSOR, Crankshaft
This OMC 0986564 SENSOR, Crankshaft part is also used on these models and components:
1990 432AMLPWS IGNITION (4.3 LITRE H.O. 4V MODELS ONLY)

1990 432APRPWS IGNITION (4.3 LITRE H.O. 4V MODELS ONLY)

1990 434AMLPWS IGNITION (4.3 LITRE H.O. 4V MODELS ONLY)

1990 434APRPWS IGNITION (4.3 LITRE H.O. 4V MODELS ONLY)

1990 574APEPWS IGNITION - 350 MODELS

1990 574BPEPWS IGNITION - 350 MODELS

1990 744APEPWS IGNITION

1990 754APEPWS IGNITION

1991 432APLRGD IGNITION (4.3 LITRE H.O. 4V MODELS ONLY)

1991 432APRRGD IGNITION (4.3 LITRE H.O. 4V MODELS ONLY)

1991 434APLRGD IGNITION (4.3 LITRE H.O. 4V MODELS ONLY)

1991 434APRRGD IGNITION (4.3 LITRE H.O. 4V MODELS ONLY)

1991 574APERGD IGNITION - 350 MODELS

1991 574BPERGD IGNITION - 350 MODELS

1991 744APERGD IGNITION

1991 744APERGD IGNITION - 744APERGF MODELS

1991 744APERGF IGNITION

1991 744APERGF IGNITION - 744APERGF MODELS

1991 744BPERGD IGNITION

1991 744BPERGD IGNITION - 744APERGF MODELS

1992 432APLAMH IGNITION (4.3 LITRE H.O. 4V MODELS ONLY)

1992 432APRAMH IGNITION (4.3 LITRE H.O. 4V MODELS ONLY)

1992 434APLAMH IGNITION (4.3 LITRE H.O. 4V MODELS ONLY)

1992 434APRAMH IGNITION (4.3 LITRE H.O. 4V MODELS ONLY)

1992 584DPEAMH IGNITION

1992 584DPEAMK IGNITION

1992 744CPEAMH IGNITION

1992 744DPEAMH IGNITION

1992 744DPPAMH IGNITION

1992 824BPEAMH IGNITION

1993 584DPEJVB IGNITION

1993 584DPPJVB IGNITION

1993 744CPEJVB IGNITION

1993 744DPEJVB IGNITION

1993 744DPPJVB IGNITION

1993 824BPEJVB IGNITION

It's been said many times here.........sucks to have an OMC Spitfire ignition system.......



Regards,


Rick

 

[bbgun24]

Re: Starting problem, NO SPARK!!

I just wanted to double check that the sensor and locater was suppose to have a full middle tab. Its kinda hard to tell from those diagrams. I talked to a couple dealers in town today and one guy told me to call Sea Way marine in Seattle(anyboday know anything about them??). I will call them on Tuesday and see what I can find. Thanks for the help.

 

[HT32BSX115]

Re: Starting problem, NO SPARK!!

I talked to a couple dealers in town today and one guy told me to call Sea Way marine in Seattle(anyboday know anything about them??). I will call them on Tuesday and see what I can find. Thanks for the help.

Sea Way Marine.......

http://www.seawaymarine.com/pages/CustomPage/Index/4354

Never heard of them though....


If they have a bunch of new (old-stock) parts they might have one.

The part is considered N/A by all the other OMC suppliers.....and for that matter, if your ignition module fails you cannot get that either.

About your only choice is to switch to an after market electronic dist or an earlier model points type distributor.....but if you do that you'll have to go back to the OMC ESA too or you will have problems shifting out of gear...... That'll mean a complete rewire of the engine harness...

I wish I could tell you something different......


Sorry about that.


Rick