Super Jet Remove choke without adding a primer?

[Sparkplug]

A primer is absolutely not better than a choke. Hands down.

A primer, or squinting gas into a engine to start it, especially a 2 cycle, can start a engine that is bone dry in the carb. You then hear the engine big and sputter and die. You just starved your 2 stroke of fuel. A choke makes sure the entire carb is full of fuel before it reaches the engine.

Rotax uses an enrichener valve. Rotax absolutely does not recommend a primer. No oem uses a primer. A primer is a bad aid for poor tuning. Show me a person who advocates a primer and ill show you a guy who can't tune a carb.

Again. A primer is a bad idea and a Che is by far the better option to keep.

Asking for any logic that says otherwise.

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[Sparkplug]

A choke can be payed after water ingestion and left pulled. No pumping in the big ass waves. Just pull and know your engine e is going to have fuel

I swear the things that get said on this site by people who ride 2 hrs a month.

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[E350]

This is a really interesting discussion. I have installed primers in all our skis in place of the choke hole. I am now considering replacing a primer with the choke in say the FX-1 just to see how I like it. One thing I don't like about the primer is that I just replaced the fuel tank "air-intake" one way check valve and it works so good that when the gas in my tank expands from the heat, it pushes fuel into the tray from the leaky primer push piston. I run a separate primer line from the replaced reserve line port to the primer so this does not introduce air into the carb-in fuel line.

My 2-stroke Echo brush line trimmer has a bulb primer plus a choke. Same for the 2-stroke Echo leaf blower. Echo 2-stroke top handle arborist chainsaw is bulb primer and choke. Honda 4-cycle push mower is choke only. Honda snow blower is choke only. 1997 Craftsman 4-cycle garden tractor is choke only. 1995 Husqvarna chainsaw (2-stroke) is choke only. 4-cycle Log splitter is choke only. 4-cycle wheeled push line trimmer is bulb primer only.

What are the different design considerations for these different choke/primer configurations?

The fuel pumps in all of the above are the crankcase pulse line/diaphragm type. All the fuel pumps are internal except the garden tractor (and maybe the snow blower) has a divorced fuel pump.

 

[Sparkplug]

People use primers because of the fascination with low popoff. Their needle doesn't hold pressure and their fuel bleeds into the chamber and back to the tank

Like I said. Band aid for poor tuning

My 1100 is high popoff. No primer. No choke

The only argument I see that is logical is on stroked motors a choke could create too much signal and crese the check valves

Why the hell would you pour gas into the carb when you could just stick your hand over it and a half second crank would load the carb and prime it at the same time

The stuff I read on here with absolutely no logic or tech behind it is staggering

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[SXIPro]

 

[Sparkplug]

View attachment 414949

Prob cause I ride the surf while guys like you gain posts on xh20.

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[SXIPro]

Prob cause I ride the surf while guys like you gain posts on xh20.

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And yet here you are posing....I mean posting...or do I?

 

[Sparkplug]

I give a poop about it about as much you do tech. Keep plunging away with your primer. Sounds like a good ol time. You probably have a meme for that too right? Waiting for your 7 other friends you have to chime in also

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[SXIPro]

The sad thing is you could probably be a valuable contributor here if you didn't always find it necessary to pound your chest like you're the greatest thing since red powerbands while simultaneously having to demean anyone that has a different idea or opinion than you do. And yeah primers>chokes all phucking day long.

 

[kevbo]

I like primers when they actually work. I have to replace them more often than I do spark plugs anymore.

 

[kevbo]

OEMs started doing that after 1996 because they had to tune carbs leaner for the EPA. PWCs will run with a lean carb tune but wont respond very well.

 

[mthomps]

I'll take my primer getting my casually riding @ss home after things go bad.

I cant tune my ski perfectly (still trying though) but that doesn't mean I don't want to ride when I can!

Also, lake erie is one of the most evil bodies of water on the planet. So I'll take my band-aid

 

[daveo2k6]

I'll take my primer getting my casually riding @ss home after things go bad.

I cant tune my ski perfectly (still trying though) but that doesn't mean I don't want to ride when I can!

Also, lake erie is one of the most evil bodies of water on the planet. So I'll take my band-aid

Not sure what you mean by evil but your comment got me reminiscing about growing up on Lake Ontario. I never fully comprehended how the other 4 lakes drained into Ontario (never once spent time on Ontario without seeing trash and dead fish) until I spent 4th of July on Michigan and could see 20ft below to the sandy bottom. End of rant... Thanks for coming to my Ted talk

 

[Quinc]

I just did a primer on my jetmate (carbs didn't come with choke plates) I hook up the primer to the return line and before priming and starting the ski I hold down the stop and start button at the same time (turns over with no spark) to get fuel through the carbs and into the return line. Then prime then start. Keeps the ski from doing that lean/air leak type scream before the carbs are able to supply ample fuel.

 

[mthomps]

Not sure what you mean by evil but your comment got me reminiscing about growing up on Lake Ontario. I never fully comprehended how the other 4 lakes drained into Ontario (never once spent time on Ontario without seeing trash and dead fish) until I spent 4th of July on Michigan and could see 20ft below to the sandy bottom. End of rant... Thanks for coming to my Ted talk

It's the shallowist great lake so the waves can kick up in a hurry. It can go from a flat day to all of a sudden you are running in to 4 to 6 footers. It's big enough to get huge breaking swells but small enough they are usually only a few seconds a part.

Very easy to swamp your ski and gulp water. It can sink big boats as well.

It also drains and fills fast, and it's not exactly always the cleanest water.

 

[E350]

I just did a primer on my jetmate (carbs didn't come with choke plates) I hook up the primer to the return line and before priming and starting the ski I hold down the stop and start button at the same time (turns over with no spark) to get fuel through the carbs and into the return line. Then prime then start. Keeps the ski from doing that lean/air leak type scream before the carbs are able to supply ample fuel.

Curious, if you have a see-through return line, when you pump the primer plunger, does it suck its fuel from the carb or from the tank?

 

[Quinc]

Curious, if you have a see-through return line, when you pump the primer plunger, does it suck its fuel from the carb or from the tank?

i do and you have to have fuel in the line for it to work.

 

[SteveC]

Curious, if you have a see-through return line, when you pump the primer plunger, does it suck its fuel from the carb or from the tank?

The return in oem tanks doesn’t have a pickup, so has to be sucking from carb side of the return.

 

[E350]

I hate it why Qinc doesn't hand feed me his information but makes me puzzle it out on my own. So, let me ask you Quinc,

Is this how your primer works?

1. Primer T is in the carb return line to the tank;
2. There is no fuel in the carb return line after the ski has sit for awhile;
3. Try to start the ski without primer. If it starts, all is good;
4. Regardless, trying to start the ski pulls fuel from the tank, through the carb and out to the return line back to tank resulting in sn introduction of fuel into the fuel line;
5. Now Quinc can use the primer to start the ski.

@Quinc

Is that how it works?
How well does it work?
Do you recommend this set up?

 

[Quinc]

I hate it why Qinc doesn't hand feed me his information but makes me puzzle it out on my own. So, let me ask you Quinc,

Is this how your primer works?

1. Primer T is in the carb return line to the tank;
2. There is no fuel in the carb return line after the ski has sit for awhile;
3. Try to start the ski without primer. If it starts, all is good;
4. Regardless, trying to start the ski pulls fuel from the tank, through the carb and out to the return line back to tank resulting introducing fuel into the fuel line;
5. Now Quinc can use the primer to start the ski.

@Quinc

Is that how it works?
How well does it work?
Do you recommend this set up?

Only two of my 7 skis have primers and it works great.

Primer on return line means you are not adding another point of failure/possible air leak.

Hold down stop button and start at same time so that your carbs fill full of fuel before priming/starting so you do not have a lean seizure like Sparkplug mentioned above. Doing this guarentees you will be do double barrel rolls in no time. *Note do not pull too much fuel through while holding the stop button or you chance having a backfire.

If all else fails keep the ski industry economy going and use: