89 Blaster Rev Problem HELP!!!!!!!

[Big Buttery]

Hello, I was riding my 89 Blaster with a friend last night. We were screwing around and I was standing on the front bumper. All of the sudden the engine starts reving, we hit a soccer net and it stalls. After I start it up again it starts reving again. We start pushing it home but I decided I would try it one more time. First kick and its running fine. We continue riding and it starts doing it again. If I rev it high it will take a while to go back down to idle. I was thinking it was the tors but I dont know if it would cause this. PLEASE HELP!!!!!!!!!!!!!!!!

 

[Blaaster]

Sounds like you may have developed an air leak.

Leak test to see if it is airtight!

I have witnessed this happen, the problem may be a cracked carby boot.

 

[Big Buttery]

Sounds like you may have developed an air leak.

Leak test to see if it is airtight!

I know the airboot where it connects to the carb is split a little. I think I should start with that.

 

[Awk08]

Sounds like an airleak.
Better get it leak down tested before running it again and possibly frying.
Could be carb cap loose, intake/reeds gasket area sprung a leak, or crank seals. The only way to know for sure is a test.
There's a DIY to build and use a tester, or message if you'd rather just buy one for cheaper than building one

 

[Big Buttery]

Sounds like an airleak.
Better get it leak down tested before running it again and possibly frying.
Could be carb cap loose, intake/reeds gasket area sprung a leak, or crank seals. The only way to know for sure is a test.
There's a DIY to build and use a tester, or message if you'd rather just buy one for cheaper than building one

Ok, It was running perfect before. I think my dad may have one at work. Ill see if he can brink it home. Probably the split boot.

 

[Blaaster]

I know the airboot where it connects to the carb is split a little. I think I should start with that.

That could be the problem!

 

[Awk08]

Ok, It was running perfect before. I think my dad may have one at work. Ill see if he can brink it home. Probably the split boot.

Unless your dad works at a 2 stroke shop, the chances of them having a proper 2 stroke leak down tester are slim.
Check the DIY thread and you'll see how it works and must be done.

http://www.blasterforum.com/threads/build-and-use-a-leakdown-tester.10663/

Also...

 

[Awk08]

http://www.blasterforum.com/do-yourself-20/leak-down-tester-video-33349/

/\ had troubles pasting this in the post above on my phone

 

[Big Buttery]

That could be the problem!

I just tried a temporary fix of taking off the retainer and taping it up real good. Better job than it was before.I think it might be a simple adjustment because it used to always start 2nd kick and now its first. I think I might just need to adjust the carb but why would it just be a problem all the sudden?

 

[Herpderplol]

I just tried a temporary fix of taking off the retainer and taping it up real good. Better job than it was before.I think it might be a simple adjustment because it used to always start 2nd kick and now its first. I think I might just need to adjust the carb but why would it just be a problem all the sudden?

Order a replacement for this now. and do not run it.

tape will only hold up for a short time, and under hard riding probably melt

 

[Big Buttery]

Order a replacement for this now. and do not run it.

tape will only hold up for a short time, and under hard riding probably melt

I'm using this special tape that's fire resistant that they use to tape up wiring harnesses on the escape recalls. I would but I haven't found one for a fair price.

 

[Herpderplol]

I'm using this special tape that's fire resistant that they use to tape up wiring harnesses on the escape recalls. I would but I haven't found one for a fair price.

Trust me, there is no "fair price" on and carb boot

 

[Fast6hand]

I feel denial kicked in. Take the advice, and go through the actions. It will save you the headache.

 

[Big Buttery]

Trust me, there is no "fair price" on and carb boot

Im going to see how it goes for now. Im going to rebuild the carb, clean the carb and adjust it.

 

[tbrooks]

You can see how it goes, but is that unfair price more than a rebuild? Prob not! If it passes a leaktest with that tape, then maybe you'll be alright, but I would be leaktesting every 30 minutes of riding with that jerry-rig. Cost of exhaust gaskets would add up quick. Btw how does that tape hold up to fuel?

 

[Big Buttery]

You can see how it goes, but is that unfair price more than a rebuild? Prob not! If it passes a leaktest with that tape, then maybe you'll be alright, but I would be leaktesting every 30 minutes of riding with that jerry-rig. Cost of exhaust gaskets would add up quick. Btw how does that tape hold up to fuel?

It holds up really well to the fuel. My dad is bringing home a tube of high temperature RTV so im going to seal up the whole intake system. If I still have a problem im going to investigate the carb and rebuild it. My handguards just came in from the mail yesterday so im going to install those. I just greased up the suspension and looked at the cable. Doesnt seem to be a problem. I wanted to see how to plug looked and I was surprised to find out it was only finger tight!! I tightened it up so its good now.

 

[Awk08]

I wanted to see how to plug looked and I was surprised to find out it was only finger tight!! I tightened it up so its good now.

that was an airleak too !

 

[speedyslyder]

you are young soooo
lessons learned

 

[Big Buttery]

I took off the cable from the thumb. AND IT IDLES FINE!!! When I put it back on, it idles fast. I think I found the problem. Im going to see if I can find anywhere where its being pulled. If I cant find anything ill just adjust the idle.

 

[Awk08]

I took off the cable from the thumb. AND IT IDLES FINE!!! When I put it back on, it idles fast. I think I found the problem. Im going to see if I can find anywhere where its being pulled. If I cant find anything ill just adjust the idle.

sounds like the cable isn't routed correctly.
cable routing starts on page 34 of the service manual download:
http://www.blasterforum.com/attachments/yamaha_blaster_yfs200_service_manual-pdf.12463/