So im a newbie, oh well always learning! I just purchased my first pwc this week. while running it out a few issues: first thing i notice fuel gauge isnt reading at all, noticed under the storage area the plug was unplugged. (two red wires running from the fuel tank) plugged it up, no luck?.. also it consistently throttles back when hitting about 35-40 mph.(Rave valve issues?) noticed alot of blowback on the heads from them , almost like tar,that normal? all that said here's where im at.. i replaced all the tempo fuel lines, tore the carbs down, (surprisingly clean...?)pulled the raves, bellows looked good .O ring hard and very loose, reclaced oring and new gaskets, haven't put it in the water yet, anything else i've missed? oh i shot a pump of gease on the rotorary shaft, any and all help is greatly accepted and appreciated..
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97 GSX w/ 787
- Thread starter JSSIDES75
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You're going to need to be a little more patient, most guys on this forum are at work, I just came home for lunch.
Anyway the fuel gauge is a fairly easy fix you most likely you need an new float, get the newer molded type.
I have a question, how do you know it throttles back at 35-40mph when you haven't had it in the water? The reason I as is the motor will performe entirely different when on the trailer and in the water. You really need to take it out for a ride to tell how the ski is performing.
I read your post it looks like you have everything covered except the jet pump oil.
Lou
Anyway the fuel gauge is a fairly easy fix you most likely you need an new float, get the newer molded type.
I have a question, how do you know it throttles back at 35-40mph when you haven't had it in the water? The reason I as is the motor will performe entirely different when on the trailer and in the water. You really need to take it out for a ride to tell how the ski is performing.
I read your post it looks like you have everything covered except the jet pump oil.
Lou
oh sorry it's been in the water, unfrotunateky when i test drove it being new to pwc's i didnt really open it up (wot) after getting it home the next day i took it out thats when i noticed all that i posted earlier. fires right up every time and low end runs perfectly but when getting into the throttle at about 35 mph it starts the issue. sorry about the bumps... new to this particular forum others (motorcycle) seemed to be more active during these hours......thanks again
The more I think about it the more I thing Brock's on the right track, I believe it's cavitation and it's over revving and hitting the rev. limiter. Check the clearance between the impeller and the wear ring should be no more than .040" about the thickness of a dime.
Lou
Lou
The longer i read all the past topics i tend to believe you guys are right, i really noticed the cavitation effect when my wife got on it with me ,seem to take forever for it to pick up and launch. been reading the topics on replacing the wear ring,should be an easy fix although i've never done it, i'll give it a try and let everyone in on the results. Thanks again. btw, where would i find out the limits on the rev limiter, if that makes sense!!
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i cant believe it ran at all, changed the wear ring out i could literally put a #2 pencil between the prop and the ring. also PO obviously never serviced it correctly, with just the basic things i've done already, Cone was only partialy full of oil too ,more water than anything, luckily no damage to the seals and bearings, replaced o rings, lubed her up and buttoned her back up....now only if it were tomorrow..lol! I bet it runs like new again, let you guys know how it turns out.....
:banghead: uuugh! just when all was going well.. well it ran like new for a couple hours, reached 64 mph +/-, quick shot out the hole, then murphy hopped on board(never shoulda slowed down for him!) It backfired and within seconds it sank, yep...sank!!! quikly dismounted and flipped it hull up, luckily help came soon thanks to the airhorn that i stashed with in reach, towed it back loaded up brought it home, utter disgust being as i just bought it three days ago. finally home and realized the backfire blew the hose off the exhaust pipe. pulled the plugs turned it over numerous times, after several rounds of pulling plugs and shots of ether she's back to life.... Now what??
What's the process of foggin it as in How much? Just spray it directly into the air breather, do I do this while it's running, I turned it over several times just to blow out the water without the plugs, and after I got it running I would run it for just a few and Kill it and repeat eventually got everything below the pistons out, surely it won't hurt till in the morning will it, as far as the exhaust , that's a piss poor design IMO hose on a slick pipe w/ hose clamp , gotta be a better way...?
You probably got it, but it's important to get some fogging oil into the cylinders, spray some through the air box and take out the spark plugs and spray some into the cylinders. After that the best thing you can do is take it back to the lake and take it for a ride.
Of course you'll need to replace the exhaust hose first, actually I just did mine last week, it was paper thin. I found it at KOI, a parts supply house, it's Gates Vulco 24032, 2" ID, and I had to buy a foot, still a lot cheaper than ordering it. It was about $10.00.
It's probably not a bad idea to check the other hoses while you're at it, the other hose is just 1/2" heater hose.
Lou
Of course you'll need to replace the exhaust hose first, actually I just did mine last week, it was paper thin. I found it at KOI, a parts supply house, it's Gates Vulco 24032, 2" ID, and I had to buy a foot, still a lot cheaper than ordering it. It was about $10.00.
It's probably not a bad idea to check the other hoses while you're at it, the other hose is just 1/2" heater hose.
Lou
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