1/Mercruiser Ignition Trouble? - OBSOLETE - Read Description

nice

I’ve edited the description to describe an error in this video.

Where Is your shop location?

love your mercruiser videos, thanks

Great video just seeing how much effort you put in it. But have a 1991 5.0 LX with a thunderbolt 4 and I’m having the same problem is and I would like to do that conversion to the Delco est if you can please help me find out what part number or we’re to get it I have called several locations and they don’t carry it at all

useful video but repeat yourself too much and it's hard to pay attention

Fun fact, you also cant find the 4 barrel carb if you are unlucky enough to have that on your mercruiser motor...

I will give you some advice. Just find an ac delco 4.3 distributor shaft. It comes with the ignition module inside. Than find the coil. Real simple to install and wire up. Just need your power wire and a ground. No need to pay high prices from a marina as they are the exact same parts but cheaper

This fella's brilliant. Anyone doing this conversion should watch the whole series. If you buy an AC Delco kit that has all the harnesses, there's more information than you need, but watch them all - you'll learn a lot. I'm in the process of doing the same conversion and wish I'd found this series sooner!

Saved my day, I’ve spent a day trying to figure all this out. Thank you!

Hey man, have you done a video like this about the second version of this module?

I have a 4.3L/V6 Mercruiser with a Thunderbolt IV that do not start. Is mounted in a Rinker 181 from 1992. The ignition coil is OK. The thunderbolt IV work but still no spark. The distributor # is 90577. I think the internal sensor in the Distributor does not work. My question is: can I replace the whole system with SKU 480140 ( 4.3L/262ci GM Delco EST 1103993 Marine Electronic Distributor) from Marine Engine Depot. (They say this replaces 807964A1). Any suggestions. Thank You.

Obviously a man that knows his job. Great video, well explained, short and to the point and no B.S.

As I've mentioned in other videos of yours, these videos are invaluable. Thank you for sharing your knowledge and experience with all of us.

Why would mercruiser mount an ignition module to a hot manifold riser?

Merci beaucoup ❤❤❤❤❤❤

I've been struggling with getting my 1998 mercruiser 305 5.0L carb to start. Pretty much the only thing I haven't touched yet is the ICM. Is there a test I can do to see if it's toast?

There has been so many things wrong with this motor as I inherited it from an auction. But, when I finally got it to turn over and idle. It would eventually have a backfire through the carb, and stop. Then, as I started it again, the length of time it idled grew less and less. It was not able to increase in rpm and Rev higher, but that was due to a plugged venturi. I drained the fuel tank of bad fuel. But still that yellow varnish left behind. Psi of fuel pump is at 7 psi. Within range of 3-7 per the manual. I've rebuilt the carb 2x. I've ensured the float is at proper mm distances. I have the idle screw at 1.5 at the moment, though oddly the Manual has 1.25 in another location. I've replaced the ignition coil.

Re-lapped the valves, good cylinder psi.

I'm feeling utterly defeated here. Not sure where to turn or what to do. Been working on this over a month now. Please help?

Edit: I forgot to mention that all it does now, is with starter fluid or not, either way, it's only within the first 3 or 4 first piston ignitions that ignition seems to happen. Then after that, it just turns and turns with nothing happening. I will turn the key off. Wait a second. Then start it again and again, first few pistons fire off - them there is nothing.

I don't know what to do. I'm out of my league here. Super frustrated.

Hy! Are you still selling these kits? I need one while it`s still summer :)