Hi, I have a 1997 Seadoo GTX. It runs like great. Then a last week I put a pint and a half of seafoam in the gas tank. It was running good for 5 minutes. I was going 50mph then suddenly dropped to 35 then soon to 10 with full throttle and then took it back to the marina. Ever since that day I haven't taken it out. I put new Spark plugs in didn't work and the engine sounds like it running really rough! I put the jetski in the water so i can get it started in the marina, Lake temp:81F degrees Engine:112F degrees after 3-5 minutes of idling. I know the engine should almost have the same temp as the water. I need help getting it back to top condition so I can go back out. Anyone know what the problem may be???
-
This site contains eBay affiliate links for which Sea-Doo Forum may be compensated.
97 Engine Problems NEED HELP IMEDIATLEY!
- Thread starter CDD21
- Start date
- Status
Spimothy Leary
Well-Known Member
my first guess is "seafoam"
shArky10010
New Member
Just asking: why did you do seafoam in your gastank ?
What about the seafoam? Do you think it kicked up some junk sending it to the fuel filters and got clogged up in those?
riding high
New Member
Seafoam, is considered to be a no no for seadoo eingines. A quick guess on my part is that you may have loosened something which is now affecting your fuel delivery. It is possible that the filters in the carbs/s have become clogged. Does your unit stilll have the grey fuel lines? Can you read the compression and let us know what it is? Don't panic help is on the way.
While Seafoam is not good for a Rotax engine, I don't think it would cause instant death, but 1-1/2 pints is a lot for one tank full. It might have loosened up some crud in the fuel system.
Do you have grey tempo fuel lines, if so read this thread.
http://www.seadooforum.com/showthre...el-Delivery-Problems-low-revs-bogging-surging
Also if you have any fuel with the seafoam still in it, dump it, use it in your lawn mower.
Lou
Do you have grey tempo fuel lines, if so read this thread.
http://www.seadooforum.com/showthre...el-Delivery-Problems-low-revs-bogging-surging
Also if you have any fuel with the seafoam still in it, dump it, use it in your lawn mower.
Lou
shArky10010
New Member
It's probably somewhere around that. I would suggest checking the fuel filter/fuel pump. It could be your fuel pump isn't working very properly anymore. It might've been caused by the foam.
shArky10010
New Member
If the fuel lines are normal don't forget to check the filters/pump.
riding high
New Member
If you have the original grey tempo fuel lines you will need to replace all of them, clean the fuel filter, clean the selector valve, and clean the carbs.
Will do. I'm going up to the lake tomorrow so we'll find out. And one other side note. A few years ago it went 60mph and now 50. Should i get a tune up or could it be the impeller from all the seaweed, sand and rocks?
shArky10010
New Member
That might be fixed with cleaning out the fuel pump/filter and i've seen you've placed new sparkle plugs. Old ones can reduce your power. But you have to keep an eye that every engine will lose performance over years, but you should be able to get it close to that old speed (60mph). It could be the impeller has a little corrosion from the salt but also from taking sand and rocks as you said over the years. This will affect the speed. You might want to replace your propellor if you're still having a big difference in speed after cleaning and stuff. But keep in mind that the very few mph's will cost u a bunch 
nammer
Well-Known Member
maybe i got confused, but I think brock1 meant one of these
http://shop.advanceautoparts.com/we...er-Kit-Actron_9090029-P_N3065_A|GRP2020A_____
diggerdpilot
New Member
I am watching this thread too. I run Sea foam in all my small engines, bikes, and car (every 3 tanks), but dont get carried away. I had a Star 1100 I bought that was hesitating, and on the advice of the Yammy forum, ran two treatments of it, and it cleared up. I have ran it with no problems in everything else, and not doubting anyone on the forum, but what exactly is the hangup? Just kicks loose too much debris, especially with Tempo lines? Rotax motors do something funny? Just wondering, I splashed a tiny bit in my new to me GTX, with 5 gallons fuel. It was stored for 4 seasons (properly winterized), but did the same thing last week as CDD21s. I am replacing the fuel lines, and likely have Doc rebuild carbs, but this sure rang some bells.
diggerdpilot
New Member
Aha! Thanks Lou, I did not know it would dilute injection oil, but thanks for the info. I have never had problems with it in my Stihl, but will go with plain Stabil.
Thanks again, I learn something every day.
hobojoe
New Member
I'm assuming this still applies to premix setups as well
Soo Lou would that explain why my engine is running to hot?
Thumper3322
Active Member
What they all said... Don't drive it until you replace the grey lines and rebuild/clean the carbs or it will run lean and go boom.
Fuel filters aren't going to do anything until you do the above.
If you don't have much gas in the tank just add some to dilute the seafoam, if lots drain it.
Fuel filters aren't going to do anything until you do the above.
If you don't have much gas in the tank just add some to dilute the seafoam, if lots drain it.
What Thumper said. I read back through the post and I'm not sure if we ever got an answer about the grey tempo fuel lines. If you still do have the grey fuel lines, then the answer is yes indirectly they can cause your engine to overheat, because when they delaminate it will cause a lean condition.
You will need to change the fuel lines, clean or overhaul the carbs., fuel filters, fuel control valve, etc.
http://www.seadooforum.com/showthre...el-Delivery-Problems-low-revs-bogging-surging
The Seafoam probably is not the reason your engine is overheating.
Lou
You will need to change the fuel lines, clean or overhaul the carbs., fuel filters, fuel control valve, etc.
http://www.seadooforum.com/showthre...el-Delivery-Problems-low-revs-bogging-surging
The Seafoam probably is not the reason your engine is overheating.
Lou
diggerdpilot
New Member
I wanted to get out bad, but am replacing the Tempo lines, and diluted the Sea foam out. Might just replace the gas while I am at it.
I see some green gunk from the inside of the one of lines between the carbs, sorta looks like copper corrosion, so I am guessing my carbs are full of it. Have the new fuel line and clamps, and will likely send them off to Doc for some TLC.
One question, and I swear I am gonna surf for it, but those carbs are TIGHT in there. Have the box off, and can see the intake mounts, and the nuts holding the carbs on. Is there a shortcut I am missing, or are mirrors and swear words in my future?
I see some green gunk from the inside of the one of lines between the carbs, sorta looks like copper corrosion, so I am guessing my carbs are full of it. Have the new fuel line and clamps, and will likely send them off to Doc for some TLC.
One question, and I swear I am gonna surf for it, but those carbs are TIGHT in there. Have the box off, and can see the intake mounts, and the nuts holding the carbs on. Is there a shortcut I am missing, or are mirrors and swear words in my future?
riding high
New Member
Mirrors and whatever else works for you. It ain't no party.
- Status
