2000 GTi wont sustain full throttle

[walloonjoe]

My 2000 GTi was stored for 2 years with full tank of treated gas. I recently put it back in the lake, replaced the spark plugs. Ran OK for a while, now if you try to go faster than about 20mph, it oscillates power (like you're letting off the throttle every 2 seconds). I ran it to about a half tank, then filled it up, seemed to be OK for a while (about 30 minutes), now the problem is back.
Any advice on what I should check/do first?

 

[derek]

do the RAVE valves. they are gummed up.

 

[dghal]

I would check those fuel lines and filters,,

 

[sea_dootech]

no dude, i have the same ski, and it was the little ciggarette filter in the carb, and if i remember correctly there is no rave valves on that setup?? its single carb 720

 

[timmyboy76]

My 2000 GTi was stored for 2 years with full tank of treated gas. I recently put it back in the lake, replaced the spark plugs. Ran OK for a while, now if you try to go faster than about 20mph, it oscillates power (like you're letting off the throttle every 2 seconds). I ran it to about a half tank, then filled it up, seemed to be OK for a while (about 30 minutes), now the problem is back.
Any advice on what I should check/do first?

if carb/s clean/rebuild dont work, disconnect red wire from rectifier..:cheers:

 

[bah1971]

rebuild the carb thats a 718.2 their are no rave valves.