Continued '97 Seadoo GS Starting Issues...

[mike2587]

Hello,

I have had ongoing problems for a few weeks. What had originally happened was that some water got back fed through the exhaust into the motor. I immediately tried getting out all the water I could by removing the plugs and holding down the starter intermittently. I've been trying for a little while now to get it running and have not had any luck. I tried pouring a gas/oil mix (little bit) in each cylinder just to get it to fire once and it keeps wanting to fire but never gets to the point where it runs on its own. After the gas mixture runs out of the cylinders it doesn't even sound like it wants to turn over and the starter just keeps cranking.

After working on it the last few days I noticed today that the lanyard does not beep anymore when putting the key on, but even without the beeps it will attempt to fire. Could someone perhaps give me some sort of direction? I'd keep trying to get it but if anyone could think it could be something else I don't want to waste my time and add more strain to the jet ski if I can.

Should I just bite the bullet and take it in or are there any recommendations?

Thanks,

-Mike

 

[mike2587]

Update...

I got a compression gauge to check the compression and it looks like both cylinders are at 120, is that good or bad? I don't see that as being horrendous nor should it keep it from running am I right?

I was trying to pull the carbs off to take a look but there are so many bolts that seem to go down by the bottom end that I honestly don't know how the heck to get it off. When pulling the tank and/or the carb is it just best to pull the whole dang motor? I guess from the way things sound, to me it doesn't sound like it's getting gas... I'd like to get this thing going by the weekend if possible which seems like a stretch I know, but any insight would be great. I can take pictures if need be.

-Mike

 

[JPX]

The big silver hex bolts in this picture hold the carbs on the intake manifold. There are two for each carb.

Everything else is just removing throttle and oil injection cables and fuel hoses. (Well, other than the 6 screws holding on the flame arrestor grille/airbox bottom and the 6 holding the plate underneath)

Read the thread in my sig link below for a more detailed walkthrough.

 

[mike2587]

Alright, I got the carb unbolted to the point where it's dangling (but not hurting anything). How can I test whether or not i'm getting gas through the carb into the block so it will run? What would one recommend my next step be here?

 

[kfx4001442]

I would have started with new plugs...or at least cleanning the old ones really well with fine grit sand paper and a lighter. But that's just me! My first move is almost always replacing the plugs on account of it almost always helping out the problem...and if it dosn't...well it's probly time to replace them anyways! Plus it rules that problem out and there is only two of them after all, so you are probably looking at about $4.00 to do it. That's less than a gallon of gas! What a deal!!!

 

[mike2587]

I've changed the plugs I don't know how many times... Probably 6?

 

[seadoosnipe]

No need to remove the carbs...

To check for fuel, you didnt need to remove the carbs. But since you have, pop of the connector between the two carbs. Then, take the forward carb, see where the nipples are? Thats the pump body. Take those four screws out, be carefuel not to ri the gasket. There, you'll find a litle strsiner. Check it and the clear plastic diaphgram.

 

[mike2587]

Hey guys,

There's only 1 carb on my GS. So get this... I have those oh so awesome gray fuel lines that I will be replacing soon, but because they are so stubborn and a pain in the rear I was able to bust off the pulse nipple that sticks out for the pulse line going into the block. Is there a chance I could find that black connector plate on the back instead of paying to replace the entire carb? I was also having issues taking off one of the throttle cables that connects through the bottom where the oil pumps through, but yet goes through the carb. That's what's keeping me from being able to remove the whole carb from the motor. Ugh stubborn throttle cables!

-Mike

 

[JPX]

Click on the parts link above and search for the carb part on the diagram for your year/model.

 

[mike2587]

Okay $39.99 not the end of the world if I can get this thing running on my own due to my own stupidity lol.

I hate to be a pest but I'm an extremely adament individual who wants to see this thing run again because it's reaching 90 here this weekend and I get the cabin all to myself haha.

But in all seriousness, I tore off the exhaust and the head to see if there was anything that looked out of the ordinary or peculiar and really didn't see 'too' much. There was some residual oil residue on top of the pistons but nothing extreme (in my opinion). Stupid question, but I pulled off the baffle at the end of the exhaust once I realized there was water in the engine so that it wouldn't backfill, that wouldn't keep it from running right? I think I've ran it once before when this happened with it off and didn't have any issues, but it's been awhile...

I'm going to pull the carb tonight and would like some input about how I can check everything to make sure gas is getting through it and it is doing it's job. I only have 1 carb on my GS. Short of a gas feed problem I can't figure out what else it could be. The unfortunate thing is that I don't want it to be something simple as I'm tearing this thing apart. I'm also curious, is there some sort of fuel filter on the GS? I followed the nasty gray lines and couldn't see anything inline, so maybe there is one in the tank? If that's the case, is it a pain to get the tank out? Is it something I should do or leave...

Ugh, confused! ANY help is appreciated.

-Mike

 

[mike2587]

Two quick questions...

1.) I want to replace my fuel lines from the stock gray ones that are in there... Do I need to remove the tank to do this? If so how would I go about doing it? I've read a lot of posts that talk about the possibility of the fuel selector valve being blocked, how can I get that entire baffle out of a '97 GS?

2.) Are there any other places where I could be getting fuel blockage? I can only assume that's where my problem lies right now because the thing wants to start when I put premix in the cylinders but once that premix combusts it doesn't do squat other than crank and crank.

Thanks in advance,

-Mike