No power to coil V6 OMC

[drunkenmonk]

I just picked up a grady white and it was repower with a 86 4.3L omc the guy i bought it from hasnt started it in 2 1/2 years. I hooked it up and tryed to crank it and nothing checked for spark at the coil wire still nothing so i put a volt meter on the pos terminal for the coil and it read 0. can anyone help ?

 

[Don S]

Re: No power to coil V6 OMC

About all you can do is start tracing back from the coil till you get to the ignition switch and find out if anything in the purple wire is dead.<br />Including the Emergency Kill Switch......You did put the safety lanyard in didn't you?

 

[drunkenmonk]

Re: No power to coil V6 OMC

Well i didnt see any lanyard <br />this boat looks like it has had its share of rewireing i was looking in the WD in the manual and it shows power comeing ogg the starter i guess theres 3 connectors ( POWER, the ground to the silinoid, and one more ) is this not where the coil power is comeing from?

 

[Don S]

Re: No power to coil V6 OMC

Only while cranking do you have power from terminal D in the drawing below. That puts full battery to the points when starting. After it starts you go through a resister wire to the coil to keep from burning the points up. <br /><br />

 

[cc lancer]

Re: No power to coil V6 OMC

Disconnect the wiring plug going to the helm, should be a big round plug on the engine, you probably have corrosion, since you are in salt air.

 

[drunkenmonk]

Re: No power to coil V6 OMC

ahh thanks ill try it tomarrow.

 

[drunkenmonk]

Re: No power to coil V6 OMC

Thanks don found that terminal d had no power so i took the starter off and apart and the insides were rusty as hell so new starter and we got spark so now i dont know how to get the engine back to the right timeing sorry im pretty new at this (only engines i have worked on are 4 cyl hondas) i can find TDS but being the couries person that i am i removed the distributer and now i can get it to slide back in to where it should be. is there a trick to it ? thanks for all the help.

 

[Silvertip]

Re: No power to coil V6 OMC

Look at the end of the distributor shaft and you will see the drive gear has a horizontal bar that meshes with the oil pump drive. Look down the distributor hole and you will see that the top of the oil pump shaft has a corresponding slot in it. If you disturbed the engine after you removed the distributor you need to get the engine at TDC on the compression stroke. Then drop the distributor in so the rotor points at #1 spark plug wire on the cap. The rotor will turn slightly as the distributor is dropped into place. The gear and the oil pump need to engage at the same time. Don't force anything. Use a big screwdriver to turn the oil pump shaft a little if you need to.

 

[drunkenmonk]

Re: No power to coil V6 OMC

that explains alot thanks man. ill try tomarrow morning .

 

[ntheyer]

Re: No power to coil V6 OMC

Don S. The drawing you have of this starter is perfect. Which position should the starter wire from the slave solenoid be in.. D I am thinking. B is for the wire from the solenoid to the coil, is that right? The positive from the battery goes to A. This is as far as I understand. When the ignition is on, but not cranking, where should I find power? When cranking, where is power found. How do I know when my starter is shot? I am trying to get my replacement engine going, but I am only getting a click at the slave solenoid. I replaced the starter solenoid, but still have the exact same symptom... clicking at the slave solenoid when turning the ignition to start. Thanks. Nicholas

 

[Don S]

Re: No power to coil V6 OMC

The starter wire (Yellow with red stripe) from the slave solenoid, goes to terminal B. That is the one that engages the solenoid and puts power from A to the starter motor C and also pushes the bendix into the ring gear.<br />Terminal D puts 12V to either full battery voltage to the coil on points type distributors or runs the electric fuel pump while cranking on engines with electric fuel pumps.<br />Do you have a service manual for your engine?

 

[ntheyer]

Re: No power to coil V6 OMC

I do have a service manual, but it does not describe this wiring closely, it only shows the wire connect to the solenoid, not where on the solenoid. Your response is very clear, but it is the opposite of how the engine was wired. Also, how do you include a picture like the one above, in your post?

 

[ntheyer]

Re: No power to coil V6 OMC

One other thing, I have a mercruiser and have the chain of Swap from 1974 Mercruiser to 1995 3.0LX. I was searching other posts that were related when I found this one. Is OMC different than Mercruiser? I wouldn't think so. Th eonly difference is that on my solenoid the C post is very small, not large like the one in your drawing. Otherwise it's the same. Also, when the slave solenoid clicks when you turn the key to start, does that mean it's good, or does it mean it's bad? And which posts to you bridge to get the starter to start... I am assuming A nd B in your drawing? Thanks.

 

[Don S]

Re: No power to coil V6 OMC

And which posts to you bridge to get the starter to start...I am assuming A nd B in your drawing?

Yes, also, that B termainal is the one closest to the block and the C terminal can be different sizes, just depends on the starter model, but the locations are always the same.