no spark

H

harpo

Recruit
Joined
Aug 8, 2005
Messages
4
i have a johnson 25hp outboard model no 25r72r. serial noc34383 have put in new points,plugs condensers and coils dissconected kill switch plug leads are new and still no spark. i have had flywheel magnets tested they are ok. this engine is a pull start. :confused: :confused:
 
OBJ

OBJ

Supreme Mariner
Joined
Dec 27, 2002
Messages
10,161
Re: no spark

Welcome to iboats Frank!<br /><br />Something simple is being missed Frank. Points set to .020 on high cam? Air gap at coils set? When you set in the new coils, did you set the bottom edge of the coil with top edge of the chamfered edge of the post's the coils set on? Plug wires in the coils set right....did you check the pins in the new coils were straight before pushing in the plug wires?<br /><br />How do you know your not getting spark?
 
H

harpo

Recruit
Joined
Aug 8, 2005
Messages
4
Re: no spark

thanks for replying.coils are set right checked the pins in the coils.no spark at end of plug leads have held onto them not even a tickle am well and truly lost
 
OBJ

OBJ

Supreme Mariner
Joined
Dec 27, 2002
Messages
10,161
Re: no spark

Have you disconnected the kill switch and checked for spark? Points gapped correctly? <br /><br />Just rechecking part numbers.....<br />Points....580148<br />Condensers....580419<br />Coils....Latest PN 584477
 
CATransplant

CATransplant

Admiral
Joined
Feb 26, 2005
Messages
6,319
Re: no spark

I suspect that your problem lies in the wires. You may not have seated them fully on the pins in the coils when you inserted them, or you may have bent the pins.<br /><br />It's easy to do. Also, check to make sure that they are the proper wires, with a real wire inside, and not the typical automotive spark plug wires.<br /><br />I suspect you're almost there with this. Just check that again, along with the proper connections on the coils and condensers.
 
TTravis

TTravis

Petty Officer 2nd Class
Joined
Dec 17, 2004
Messages
120
Re: no spark

I mention this because I made this mistake myself. Go to http://outboard-boat-motor-repair.com and look at either my 3 or 5.5 HP tune up projects under "ignition". There you will see some color photos of the ignition. Pay particular attention to where the coil wires go. Someone told me you could not wire these up wrong, but I managed to do it. The ignition on these little motore are basically the same as what you have. I've had a lot of people use those pictures for guidance.
 
H

harpo

Recruit
Joined
Aug 8, 2005
Messages
4
Re: no spark

thanks a lot gentlemen have solved my problems with your help special thanks to tom travis for the site he sugested thanks again
 
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