Strange but true?

[jjmeyer]

I cant understand why when my GSX 98 is out of the water the rpm seems to increase all the time well above the recomeded 3000rpm at 4000 rpm I have to pull the lanyard to make it stop otherwise ir will just keep on going to the point that pulling the lanyard does not even stop it the only way the to kill the engine is to pull the choke out to "smother" it ? In the water however it idles perfect at arround 1500rpm??And in all performs exceptionally well

Any sugestions would be very much appreciated?

 

[timmyboy76]

carbs...

i'd pull'em stud, make sure all is good/clean, make sure the xcellerator pump is work'n/squirt'n, and then if carb gaskets a little "beat" either replace with new, or add sealant to both sides of gaskets...

 

[jhjesse]

:agree: She's sucking air somewhere, maybe around the base of the carbs

 

[ski-d00]

your carbs need cleaned. most people just turn up the idle a little bit when their carbs start to get dirty/clogged filters to maintain correct idle speed in the water but when on the trailer it is set too high and will cause engine runaway very easily which is pretty common. your probably don't have an airleak, the carbs just aren't working quite right. it may seem ok on the water but will be even better once the carbs are cleaned.

 

[jhjesse]

Yep...your carbs and filters need cleaning!
Yep...you are probably sucking air around the base of the carbs somewhere!
Yep...I only comment on things I have experienced first hand!

 

[kustomkarl]

Yep...your awful agreeable Jhjesse...:rofl: :ack:

Karl

 

[jjmeyer]

Thanks guys! Will this maybe be the cause that I can only get a max of 6600 rpm at WOT and not the 7200rpm as per the specs?

 

[jhjesse]

Yep...make sure after you clean the carbs you set the LSA's and HSA's to factory settings.
GSX Limited (5629/ 5645)
Idle - 1500rpms in the water
- 3000rpms out of the water

LSA's - 1 1/4
HSA's - mag carb 0
- pto carb 1/4
GSX Limited (5625)
Idle - 1500rpms in the water
- 3000rpms out of the water
LSA's - 1 3/4
HSA's - 0 on both MAG and PTO carbs

 

[shingadaddy]

Idle runaway is often common out of water for 2 strokes. NO BACKPRESSURE. 2 strokes are commonly power tuned UP or DOWN with exhaust resonance tuning. Thats why different exhaust pipes make a big difference in power output and where the power comes on...Not saying you don't have a sucking leak but idle setting is best done in water in most cases.

 

[hrspwr]

I am actually having the exact same problem now... did you even sort it out???

Thanks