95 GTS Fuel Problem

[tawsed]

Hey, new to the forum and this looks like an excellent source of information. Thanks in advance for any help you can offer.

I have a pair of 95 GTS's. I bought the first one last spring and if would stall at full throttle. I found the fuel lines and switch gummed up so I pulled the tank and cleaned everything out and replaced all fuel lines. The Ski woks great now.

Last October I found another 95 GTS. I ran it before putting it up for the winter and it had the same exact problem as the other one did. Staled at full throtle. I figured the 15 year old ski needed new fuel lines too. Finally got around to working on it Saturday. I pulled the tank forward but did not remove it and inspect the draw lines or fuel level sensor. I replaced all lines and inspected the fuel sithch. The fuel switch was surprising clean but I blasted it out with carb cleaner anyway. Also installed new NGK, BR8ES plugs.

So I get everything back together and she will not fire. Got spark but no gas going to the plugs? I pour gas down the carb and still no firing? I hooked up an external line to the fuel input to the carb and she is drawing fuel but it is not going into the cylinders? I can feel a vacume on the carb when I crank so I know she is asking for fuel. The filter is full of fuel and everything seems in order.

I can't figure where the fuel would be going if it is not getting into the cylinder heads? When I bough this ski they guy told me the original owner sold it for the same reason. He showed me a receipt for a carb rebuild kit from a SeaDoo dealer but there was no labor charged? The ski started easily last October but stalled at full throtle. Now I can't get her to fire at all.

Another thing I noticed is the fule level does not indicate while cranking? When I tested the ski last year the Oil indicator light was on with a full tank of oil?

Help?

Thanks,
Dave

 

[Dr Honda]

Well... the real problem wasn't fixed.

The gummed up fuel lines sent melted green rubber into the carbs, and they are plugged up. Take the carbs apart, and rebuild them.

As far as "Where is the fuel going"... it's just being sent back to the fuel tank. If the internal carb filter is plugged... the fuel is sent back to the tank via the return line.

The oil...

Sometimes the oil switch takes a little time to soak up the oil, and turn off. It has been known to take over night some times.


The fuel level....

I don't know if it stops while cranking. I've never really paid attention to the gage as I'm starting things. But, with the current drain the starter putts on the battery... I would think it's not going to work while cranking.

 

[tawsed]

Thank you sir. Can I just pull the diaphram cover to get to the carb filter or am I better pulling the carb off to work on it? There is not much room to see around the back of the carb.

Do you know what cames with a carb kit? Jet's, needle valves, gaskets?

Thanks,
Dave

 

[tawsed]

Ok, it was pretty niave of me to think I could work on the GTS carb while still mounted to the engine.

I removed the carb and checked the diaphram fuel pump and everything looked clear. The fuel filter was a little dirty but not completely clogged. The other side of the carb where the fuel is routed to and the jet's are was pretty clean also.

So, it still seems that not enough fuel is getting into the combustion chambers. I'm not sure how the fuel combines with the oil at the bottom of the engine and then makes it's way back up to where the plugs are?

Could I have an obstruction someware else? Fuel seems to be coming through the carb just fine. Spark is there but she won't start?

Any ideas?

 

[tawsed]

With old jet skis persistance always pay off. Kept fiddling and finally got a bunch of nasty looking fuel to dump out the back end? Exhaust? Not sure how it would get all the way through the expansion chamber but it came through the back someware. Then she started to catch and finally started with a bunch of smoke, etc.

Seems to start now with consistenty. I guess I would not recommend pouring gas down the carbs at there is no bowl, just a fuel pump built into the carbs. So dumping a bunch of gas down the carb like I did does not help to vaporize the gas and get it into the cylinders to fire. Lesson learned.

Thanks.