How to start MerCruiser MCM 3.0 . Carburetor heat up

This is what actually written on carb air filter at the beginning of the video: Ignition timing 2minutes. I.e. it is design feature. But we all skip user manual 🤣. Some viewer pointed it to me.

[freddiebebop]

Excuse me but I have to call out shit when I see it. Do you have any idea what a choke is supposed to do on an engine you are completely defeating the action of the choke by leaving the key on for 2 minutes the choke is designed to do exactly what it's doing and stays shut when starting a cold engine to restrict airflow through the carburetor and cause the engine to run rich until it warms up. Not being there I have no idea whether or not your choke is the adjusted properly in this video but it appears to be doing exactly what it was designed to do until you defeat it by leaving the key on. If you're having issues starting that particular engine the first place I would start is with a carburetor rebuild then a compression check and last check the timing.

[bryandempsey]

I replaced my tks carb with and electric what is the best way to start my boat i find I have to crank it quiet a bit and play with the throttle to gets it going as the choke is fully closed but don't want to mess up my points . Is is juts leaving the key in the on position that is bad . Is it ok to crank it then turn to off position crank then back to off

[ZachsGarage]

I'm so sorry. I cannot imagine waiting 2 minutes for my automatic choke to warm up. If you push the throttle the flap will open some, then you can back the throttle off as the engine starts so it does not rev like crazy.
Also, my choke flap is held shut when I start with no issues

[goflylow]

ATTENTION ALL VIEWERS DON"T DO THIS FOLLOW THIS PROCEDURE TO

PER THE OWNERS MANUAL AND MERCRUISER:
1. Vent engine with blower motor for up to 4 min to vent any fuel vapor in the engine/bilge area.
2. When the engine hasn't been started and is "cold" try 1-2 throttle only priming pumps.
3. Then position the throttle about 1/4 forward in throttle only mode and turn key to start.
4. When it starts it will slightly rev up. Pull back throttle quickly to just forward of neutral in throttle only mode.
5. If it doesn't start pump the throttle again in throttle only while engine off of course. It may require multiple priming throttle pumps to start. But start 1 at a time maybe 2 at first as you do not want to flood your engine.

You need the choke to help the engine start. Just follow these directions next time. If you have running issues it may be a dirty carb, but use the mercruiser start up process.

[dangergathering]

You know that is an auto choke. It is meant to be mostly closed on cold start to help it start easier. If you have starting issues your carb or fuel delivery is having issues. What you are doing is basically canceling the choke process. That will not help. That is why your boat sounded like it wanted to stall when you started it at the end of the video.... Carbs and chokes go hand in hand. USE THE CHOKE PEOPLE! Don't flood your engine priming it and it will start. Get your carb cleaned if it is running funny.

[TheCommo]

Nice video but if you have points and a distributor and the points happened to be closed while key is on, the power wire to the coil will get extremely hot quickly because the points are going to ground. Noticed this when I tried this. The power wire became "nuclear" and almost caused a fire. I would recommend making adjustments to that choke setting to make it run leaner if you need it more open. for the record, there's nothing wrong with my coil, distributor, etc but just pointing out if those points happen to be closed when you Key On, that's what's going to happen. The points collapse to ground momentarily during a cycle and as they open, power is supplied to the condensor which will make your spark jump when the points open. There's a video that explains all this but I'd recommend NOT keeping key on more than 4 or 5 seconds or that 12V wire to the left side of the coil is going to get hot really fast if the points are closed.

[bobg]

That valve is the choke it is supposed to be closed during a cold start. If you find that it wont start cold unless the choke is open... adjust the choke so there is less spring pressure when cold. Typ boats are only started on hot days so not much choke is needed.

[Stophinhousen]

That’s a choke flap, that’s suppose to be closed to help enrichen the engine on cold start up.

[joshuaward]

I have a question. Mine runs fine on muffs but as soon as its in water doesn't want ro idle. Dont shoot a rookie...

[ArturoHernandez-klup]

Can you fix this by adjusting the choke to open a little bit?

[trevorfurgeson]

good video. I have a 3.0 mercruiser inboard motor on my boat. it starts fine initially but if I pull a tube for a while and shut it off it doesn't want to start very easily for about half an hour after that. Would you know why this is? thanks !

[moraleshvac]

Hi how are you I have the same boat but my won’t start up can help me about

[barrybebenek]

This won’t work on a newer TKS system. Leaving the key in that “on” position, would leave an annoying alarm sound going the whole time.

[drew]

Can you force it open with screwdriver like we used to with our cars back in the day?

[tommyschulte]

Iv started doing this too. Sometimes i cant keep the motor going long enuf to get it in gear and get away from a dock. So i just turn the key on right before i back the trailer into the water. Seems to work way better that way. Recently iv advanced the choke. We'll see if that works too.

[tjforgey]

So you have to turn on ignition then wait 2 minutes every time befor trying to start. Not likely.

[opinyounation]

NOT KEEP SOME STARTER FLUID IN YOUR BOAT YOU CAN JUST SPARY AND GO IN 5 SECONDS OOH, I FORGOT THAT'S TOO EASY!!

[mrKramble]

Strange that on the specs stands 2' ATDC.. I just did timing at 2' BTDC.. that's on my spec

[joeingles]

I'd you're sinking just push the valve open with your finger?