Blaster trouble :(

M

mugRBG

New Member
Nov 2, 2009
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So I was up yesterday at 8:30AM and decided I'd ride for about an hour, I did so, and everything was fine. I usually let it warm up 5-10-15 minutes before riding and once it warms up the idle seems to die down a bit and it will sound rough (like it is close to stalling). Also some days seem better than others as far as smoking, but I hadn't noticed any performance issues.

I had decided I'd throw a new plug in and opted to pull the gas tank prior to doing so....I got pretty much everything spotless (tank, plastic shroud(s), rubber flaps, frame, etc.) using SPRAY NINE and prior to putting the tank back on I got the brilliant idea to shake the tank, big mistake? It fired right up on the first kick after having sat for 4-5 hours, but immediately dies out if I don't keep the throttle open some or feather it.....plus the smoke seems more excessive. Confused. :( When I rode in the morning all I had to do was pull the choke, kick it once, and I could walk away....now it will fire up but I can't even take one step away from it because it dies right out.

Has anyone ever experienced this?

-----

I figured with the premix I had been topping off with after every ride, and 65-75% of the premix having been in for about a week-week and a half, that shaking the tank while off the quad wouldn't be the worst thing in the world.

I know I didn't ride with it low on oil, without proper premix (32:1, only use one mix at a time....if I switch premix I run it all out prior to switching), without a clean filter, or any other basic rules of thumb. Does this sound like something maybe with the carb? Like shaking the tank was a big mistake and I dislodged some dirt or gunk and it isn't getting fuel unless I hit the throttle? It isn't the tank because I pulled the line and my light blue premix came flying out the hose....it isn't any easier to kick over (compression - plus ran fine in the morning).....it must be getting spark because it starts on first kick every time.
 
RE; the spark plug I had been running....same exact plug BR8ES (I believe, whatever the Blaster calls for). I didn't cut the threads back or buy a few plugs and do a plug chop, but it seemed rich....plug in there was .030 and I didn't bother with the new one which was a bit short of that.
 
try puttin the old plug back in and see what happens, any possibility you got somethin wet with the cleaner, check that ground connection where the coil is, and it does sound like ya mighta dislodged some debri that ended up in the carb, if the plug doesnt do it, try pullin the carb, take the bowl off, and give it a good cleanin, search the "diy" section, theres a good thread on "how to clean your carb"
 
a nice warm is a good thing to do but 10-15 min is major overkill. i would say you are loading up your plug while it sits there. i let mine warm up untill i can feel the head is warm to the touch.
 
Well I think I'm running on the rich side regardless....I've never fouled a plug either and I do quite a bit of riding in 2nd/3rd navigating trails and such.

I think I'm going to put the old plug back in and see what happens, although I don't see why that should matter since all I did was put a brand new one in with practically the same gap (I've never seen anyone recommend .030 anyway, that is what the old plug was gapped at, from what I understand it is usually in the .02- range).

I was mainly wondering if something in the carb could be common for this type of symptom....firing right up but dying out unless you stay on the throttle. Like I said, ran fine all morning and the only two things I did was remove-shake tank/clean frame-etc. and change the plug...might have to remove the carb and clean again, I guess.
 
SIGH.....looks like I'll be sidelined for the foreseeable future. It is really pissing me off because the Blaster was running just fine yesterday morning, and all I did was pull the gas tank, change the plug, and clean the frame.

I was just outside.....pulled the carb/cleaned carb, same result. Pulled the new plug and put the old one back in again, same result. It is driving me nuts....fires right up but will immediately die out unless I rev it up. Still smoking like a biotch, much more than it had been since this problem arose the past two days, and it smells pretty nasty IMO.

I asked the one dude where I had been buying premix oil if they screwed around with crank seals or anything and he didn't sound interested...made some crap up about how they don't mess around with that stuff "too much" because parts are hard to find. Ummm, no. :( Going to have to rally some money and actually find a reputable mechanic-type in PA (read: not a Yamaha dealership, I'll never go through that again).

Two other things I noticed while out there revving it just now to keep it going;

1. If I rev it high the pipe is actually moving some where it meets the cylinder....hadn't noticed this prior to today and only noticed because there was a bit of smoke coming from the area.

2. I imagine there are two gaskets, one gasket for the cylinder meeting the crankcase and another for the top piece that the spark plug screws in....just above the pipe meeting the cylinder (where there is a gasket I imagine) it looks like there could be a leak or bad gasket.....best way to describe would be sludge on the fins in this area. I may have been riding it like this for some time now.

Very sad day.... :( More rep points to come for those that had been answering my questions, I previously had no idea how to rep, and now it says I've given too many in a short period of time.
 
you might have accidently done something to the reeds. check those you never know it might be the cause of the problem. or there is also the infamous tors
 
hi
How did you clean the frame ? water? powerwash? garden hose?
Did you use soap? detergent ? solvente?
I washed my 900 diversion once with a soft brush and some soapy water , and after that the engine was workin on 2 -3 cilinders hard to start too! only when it dryed off completley did it start working well again !
you Could have got some humidity in and around the coil !
Check the connections especialy the ground.
also could be the Tors
if you haven't yet try new gas ! water in the gas can do this also!
good luck

Nuno
 
webmonstro said:
hi
How did you clean the frame ? water? powerwash? garden hose?
Did you use soap? detergent ? solvente?
I washed my 900 diversion once with a soft brush and some soapy water , and after that the engine was workin on 2 -3 cilinders hard to start too! only when it dryed off completley did it start working well again !
you Could have got some humidity in and around the coil !
Check the connections especialy the ground.
also could be the Tors
if you haven't yet try new gas ! water in the gas can do this also!
good luck

Nuno
Click to expand...

How did I clean the frame - I took a clean rag and used SPRAY NINE. I didn't spray any spray nine directly onto the Blaster, I sprayed it on the rag and used the rag....the whole area surrounding the airbox lud, rubber flaps, plastic shrouds had dirt/grime caked on. The whole area looks like brand new now.

Thanks for the suggestions, maybe I'll get lucky and it is something with some mositure/condensation or something on the coil. It wouldn't be water in the tank because I ran all the stuff out when I bought it and premix 32:1 with 89 octane (usually, figure 93 isn't worth it).

I'm starting to think maybe it could be something with the TORS or something, but the nasty smelling smoke pouring out doesn't have me too hopeful. Appreciate the response. I:II:I
 
yeah it could be because you might have the main seals going out it will cause it to richen up and die on u. i would suggest rebuilding the bottom end. how long has it been since the bottom end has been rebuilt.
 
Hawaii said:
yeah it could be because you might have the main seals going out it will cause it to richen up and die on u. i would suggest rebuilding the bottom end. how long has it been since the bottom end has been rebuilt.
Click to expand...

supposedly rebuilt with less than 5 hours on it when I bought it..... :(
 
i would disconnect your tors, its amazing what that can do when its crapping out. also have you cleaned your pilot jet by taking it out and spraying cleaner through it? if not do that also, i think you are saying you might have a head gasket leak? is it possible you could get some pics?
 
Sorry just out the sky here you sead you took off the tank and what not, have you tride to set the idling @ the IDLE screw and what is your air screw sitting at
 
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