yet another no spark thread...

[FRP]

..and yes, I have used search. (Problem on with one motor only)
Got a pair of 89'Mercruiser 350 sport pac 260hp(?)no serial # on either motor) with velvet drive transmission to shaft.It has delco EST ignition. 12 volts going into coil and out to distributor, but no spark from coil when using spark tester. Their is no interrupt switch, or kill switch at helm for that matter. I have also swapped out coil, wires from other motor tring to quick diagnose problem. Can a bad pickup sensor coil in the dist cause this? I just printed test instructions tonight , so I will try this tomorrow. I will also double check the harness plug( as per 'coroname' post re 12 volt already @coil) but it is already clamped. Boat just started having an issue with this motor starting, and after engine compartment detail, this surfaced. I have also checked entire compartment for anything that may have been knocked loose.
Any ideas? Will get back at it tomorrow(did i forget to say the ignition module in distributor is new? didn't have a tester for that anyway)

Robert

 

[FRP]

Re: yet another no spark thread...

anybody?
Suggestion? Anyone have a link to Delco EST troubleshoot chart?

 

[Coors]

Re: yet another no spark thread...

Did the engine compartment detail involve water?
Check all connections, and clean out the dist cap.

 

[Boatin Bob]

Re: yet another no spark thread...

Where was the key when you had 12v on the coil, in the start or run position?

 

[Bondo]

Re: yet another no spark thread...

Can a bad pickup sensor coil in the dist cause this?

Ayuh,.... With Twins,... You can always Swap Test'em.....

 

[Don S]

Re: yet another no spark thread...

See how I am, I found the charts, uploaded them to photobucket but forgot to post em.
Anyway, these are from a Mercruiser 3.0L engine and your Marine power distributor may not use the 4 pin connector, but everything else should be the same.

 

[Bondo]

Re: yet another no spark thread...

See how I am, I found the charts, uploaded them to photobucket but forgot to post em.

Ayuh,........ You're 1 'ell of a Guy Don,.........

I just bookmarked Another, "How To" in my list of "How To"s...........

 

[FRP]

Re: yet another no spark thread...

Thanks for all replies.

Key in 'run' position when tested.

How do I remove pickup coil sensor? looks to be pressed on dist shaft?
(It did not move when I applied upward pressure, but I guess that could be from corrosion.)

Thank you for check list

I am going out to boat after work today. Will report back.

Robert

 

[Boatin Bob]

Re: yet another no spark thread...

Key in 'run' position when tested.

Robert

Don's chart is great and should be followed but just a comment about checking for 12v, you also need to have 12v there when the key is in the start position or it never will.