Weird little issue

[DC SUPERJET]

This has happend to me two days in a row now. I'll be riding my rn and just going on my merry way when all the sudden it feels like I'm running on one cylinder. Yesterday when this happend i turned it off, started it back up and it ran fine for the rest of the day.

Today, it happend again. So once again I tried to just turn it off and try again, but no luck. Still sputtering away on what felt like one cylinder. So I get it up on the beach cart, pull off the plug boots, put them back on and fire it up. It sounded great on the beach, so I put it back in the water and it ran great again.

What is this? It so random I can't put my finger on it. I'm going to get some new spark plugs tomorrow morning since they haven't been replaced in a looong time, but other than that what could this be? If the plug wires were bad it wouldn't magically just start running fine again would it?

Oh and if it matters, it's a stock motor with a b-pipe.

 

[#ZERO]

If you have oem spark plug ends pull back the boots and check the wire connection. If it's loose or corroded replace them with some MSD spark plug ends.

 

[DC SUPERJET]

and by ends do you mean boots?

 

[#ZERO]

Yes spark plug boots with stainless terminals.

 

[DC SUPERJET]

found some

http://www.blowsion.com/detail.asp?PRODUCT_ID=AWAC8850

 

[ncbrock]

dont order them from blowsion, they're just over pricing them. Go by a local autozone or yamaha dealer or something they will have something

 

[Mark44]

Make sure you use the proper crimpimg tool when installing. I also solder the wire.

Mark44

 

[DC SUPERJET]

If you have oem spark plug ends pull back the boots and check the wire connection. If it's loose or corroded replace them with some MSD spark plug ends.

I pulled off the boots and I suspect that the terminals were loose, so I'm going to get some new ones today. Another thing I noticed was that the wire at the end of the spark plug wire seemed really brittle. It broke off as soon as I messed with it...Does this mean my wires are breaking down? Should I get new wires or just try the new terminals first?

 

[DC SUPERJET]

put the new terminals on, even wrapped the plug wires in air hose to reduce the risk of having my plug wires ground out on my pipe. I'm not sure if that was the case or not though.

Now I'm thinking it might be overheating? I ride for about 5 mins and it just starts running like garbage, won't accelerate, and sounds like it's on one cylinder. It's about a 50/50 mix of water and smoke out the pisser at idle when this happens as well.


What do you think? Overheating? Is there anyhting I should check first?

 

[TrueBlue]

Check the comression now. If it has been overheating this whole time you will see a significant diff in compression.

 

[DC SUPERJET]

Fixed the problem. One of the T fittings coming out of my ldt. chamber was clogged. Thankfully it runs great now.

I really had not been riding it while overheating, the ski wouldn't really let me. Every time it happend I just idled into shore. Do the RNs have some sort of overheating protection build in through sensors or something? To me it seemed like once the ski knew it was getting too hot, it would only run to so many RPMs or something like that. I misinterpreted it as it running on one cylinder, but now I feel like it was the ski protecting itself...

I'm just happy now because it was runnning great after I unclogged the T fitting.

 

[DC SUPERJET]

dont order them from blowsion, they're just over pricing them. Go by a local autozone or yamaha dealer or something they will have something

Good point. Got mine for 2 bucks at a local speed shop!

 

[fals3illusion]

i know why its doin that..... its cuz u never call me to ride anymore , or answer your phone cuz its always off !!!!!!!!!!!!!!

 

[DC SUPERJET]

My phone doesn't work here, you little drunk poster lol

 

[fals3illusion]

ha ha excuses, excuses, lets ride soon I've been practicing my BR's

 

[jerzyjet]

Fixed the problem. One of the T fittings coming out of my ldt. chamber was clogged. Thankfully it runs great now.

I really had not been riding it while overheating, the ski wouldn't really let me. Every time it happend I just idled into shore. Do the RNs have some sort of overheating protection build in through sensors or something? To me it seemed like once the ski knew it was getting too hot, it would only run to so many RPMs or something like that. I misinterpreted it as it running on one cylinder, but now I feel like it was the ski protecting itself...

I'm just happy now because it was runnning great after I unclogged the T fitting.

If you have the stock head its got a temp sensor built right into the head. I just put a riva head on my 2000 SJ and it doesnt have the fitting for the sensor so you gotta remove it from the electrical box. I believe thats what it's for, it makes the ski run only up to a certain RPM. Once you remove it, it wont do that for you.