Old Mercrusier 302 188hp won't start

[bomberb52]

Been troubleshooting and replacing obvious bad stuff. The solenoid and coil where both bad. But after replacing them I still don't get a spark. I have 12volts to the + side of the coil.

If I brush a negative to the - side of the coil I can get a spark off the coil.

Could this be my shift cable switch? Also I can't trim down or up, the pump runs, but the drive doesn't (about 1/2 full of fluid). Is this possibly related?

 

[Bt Doctur]

Re: Old Mercrusier 302 188hp won't start

Have you replaced or cleaned/adjusted the points?

 

[bomberb52]

Re: Old Mercrusier 302 188hp won't start

I've not very versed with points. Is there a quick way to test them?

 

[Bt Doctur]

Re: Old Mercrusier 302 188hp won't start

For the 4 but the theory is the same. Page 4B-6
http://www.boatfix.com/merc/Servmanl/13/13B4R2.PDF
Your manual can be downloaded from the "Adults only section"

 

[bomberb52]

Re: Old Mercrusier 302 188hp won't start

Ok today I finally got back to working on this thing. But something new has cropped up. It won't turn over at all. No clicking at all. When I turn the key everything is dead, no gauges get power or anything. Is this a ignition switch issue?

 

[Bifflefan]

Re: Old Mercrusier 302 188hp won't start

Ok today I finally got back to working on this thing. But something new has cropped up. It won't turn over at all. No clicking at all. When I turn the key everything is dead, no gauges get power or anything. Is this a ignition switch issue?

Battery is dead. or not connected.

 

[bomberb52]

Re: Old Mercrusier 302 188hp won't start

I got good power on the battery (also have external charger on it). The trim pump also works.

 

[bomberb52]

Re: Old Mercrusier 302 188hp won't start

Figured it out, stupid electrical connector was flakey. WD-40 did the trick.