1996 GSX Bogging

[dubltap]

My 1996 GSX 787 Engine is missing badly when I apply the throttle. Then after a short period of time it will run fine and then all of the sudden it will start missing again, Any clues?:cheers:

 

[Nate Surveyor]

Sequence:

Compression check it first. This costs not too much, and will tell you the condition of your motor.

Put fresh spark plugs in it.

Get rid of the old gray fuel lines. This is no small chore. You will need 25 ft of good fuel line. And 15 or so stainless steel clamps. Good injector line is 4 BUCKS a foot.

Clean out the carb(s) and especially the little inline filter. See Seedoosnipes sticky on this.

Clean out the rave valves. Replace bellows if needed.

Now, you are starting to get your ride back. You cannot count on a ski with gray lines. They slowly DISSOLVE into resin, and clog all small holes. Even if the outside looks nice.

And, don't forget to post back, and tell us if it worked.

Most of the folks here totally donate their time to help others. Great environment.

And, last but not least, don't let your brother-in-law borrow the doo for the weekend with his girlfriend!

Nate

 

[dubltap]

Tnx, I'll give it a try and let you know if it works

 

[timmyboy76]

hey dub...if what Nate said, doesnt work, disconnect the red wire from the rectifier, if that works, replace the rectifier..

 

[dubltap]

Thanks timmyboy, I pulled the red wire off of the rectifier and it seemed to run fine I'll let you know when I replace it and get it into the water

 

[timmyboy76]

niiiiiiice....:cheers:

 

[ronmurray]

Whats The Deal With The Gray Tubing, I Have A 1999 GTX 787 RFI, It Has Some of those Gray Lines? thanks.

 

[Nate Surveyor]

Gray Fuel line?

They dissolve on the inside, and clog the fuel system. Trust me. They look nice, but get rid of them. Replace them with good black EFI line.

You can either do it now, or AFTER they clog the works up, and now you will have to take the carbs apart, and clean them too!

Nate

 

[KaosIND]

Why does disconnecting the red wire help???

 

[timmyboy76]

bad rectifier...?

The rectifier/regulator box does two things. It recieves AC voltage generated by the stator coils through the yellow wires. It then converts that AC power to DC power using the rectifier portion. The red wire sends back to the battery, regulated DC voltage to keep your battery charged while riding the ski.
When the rectifier quits working, that red wire is sending AC voltage to the DC battery. Your ignition runs off DC power as it is a DC CDI ignition. When AC is sent, it interferes with the DC CDI. If you can picture the static your car radio has when under high power lines you can understand how the AC effects the ignition.

A magneto produces very little voltage at lower rpm and more voltage at higher rpm. That is why the motor will start and run decent at lower rpm, but run very ragged at higher rpm when the rectifier is shot.

 

[KaosIND]

Sweet that is a great explanation and very easy to under stand. So as long as the red wire is disconnected everything will be fine just not charging the battery and soon killing the battery right?

 

[dubltap]

Thanks for that explanation also. Since I've had the ski,got it from my brother who bought it new, it's always had problems charging the battery. I always got the message "12 volt Low" even though I put in a brand new charged battery, could this be one of the symtoms of the rectifier going?

 

[Nate Surveyor]

Whell, I'll be! Glad to see you found the problem!:agree::hurray::hurray:

I'm glad you did not have to go all through the fuel system, when it was an electrical problem.

However, if you have the Gray lines, they are gonna get you eventually.

Nate

 

[dubltap]

I'll be doing that ASAP. Thanks Again!