Hi all, looking for some help with my Blaster. Bellow is a history of what has been going on. Only received one reply from another forum and could use some help. thanks so much.

drive2quik - Posted: Fri Sep 28, 2007 10:04 pm
I just traded for a 1994 Blaster. The engine was just rebuilt and the oil pump has been removed and blocked off. Here is a short history and the problem:

When I first got it a few days ago, it ran fine. The second time I ran it, I forgot to turn the the fuel on. It idled, I took off, and it died (duhh). I turned the fuel on and could not kick start it until the next day. I bought a helmet and ran it for about an 2 hours the next day.

After the two hour ride I went out about an hour later and went to ride it again. I forgot to turn the fuel on again, it idled, I took off, and it died (double duhh). When I kick started it after I turned the fuel on it had many failed attempts but once it almost started but then died. The next day I went to start it again and the first time it almost started and died followed by many failed attempts.

I called a buddy of mine and he said that I probably fouled the plug. I pulled the plug and it looked new but there was oil coated on it. I blew it off with some Engine Bright and it looked new. I reinstalled it and still nothing.

Some thoughts:

I was told a 50:1 mix but posts I am reading are saying 40:1. When I run there is black smoke, but i have nothing to gauge the amount of smoke by because the Quad is new to me. Also I have been running 87 octane gas (the last two tanks - only fuel I have put through it since I got it last Sunday) but will be changing to 92 or 93 from now on (also from reading posts).

Also (maybe unrelated) since I have never owned a Quad before is it normal for me to keep the throttle going to keep the Quad from dying at idle? If I don not gas it now and again, it will stall at idle.

I want to tear it down a little tomorrow to figure it out but need a starting point. I have a Clymer manual in the mail to me, but do not have it yet.
I think the problem may be electrical but do not know how to test for a spark or the kill switch (coil ground).

Any help would be appreciated.

drive2quik - Posted: Sat Sep 29, 2007 12:28 am
I just went out to the quad and there is a strong smell of gas. Is there a chance that I am flooding the carb and/or the engine. If so how do I "un-flood" it? When I kick start it I give it about half throttle - is this bad? Am I doing something wrong?

helper - Posted: Sat Sep 29, 2007 3:33 pm
It;'s hard to start after the gas being off because the system has to play catchup. As to mix ratio omg 50:1???!! Who told you that??? Fire them, they fail. Never run ANYTHING but a 32:1 mix in the blaster, i dont care what mods it has or how fast it is, 32:1.

The quad should idle when its warm, if it doesnt you need to adjust the idle. You can do this by removing the seat and turning the thumb screw by the gas tank.

Kick starting half throttle is a bit much, but it wont really hurt it. You should be, on a cold start, putting the choke on and just kicking it no gas given, and it should start. It sounds to me your carb is out of adjustment. The not starting was due to it being starved for fuel.

So to recap:

32:1 ONLY
Adjust idle
Fine tune carb till happy

drive2quik - Posted: Sat Sep 29, 2007 4:55 pm
Thanks for the reply. Still won't kick over. Went out to the bike to fiddle with it and was again hit by the strong smell of gas. Opened the gas tank to add oil (as per the last reply) and found a once full tank to be almost empty. Directly underneath the Quad was a dark spot with oil and gas. I looked around and found that it was leaking from a tube that comes out the bottom of the carb, facing rearward. The picture bellow shows the tube that is leaking shown with a red arrow. Any ideas of why this is happening? I did have the fuel turned to on (not reserve) while it sat over night but I don't think it should still leak when the Quad is stationary.

 

its your carb the floats are stuck open.

 

your needle seat is most likely worn out, don't mix gas in the tank, use a ratio rite and get it exact, you can run 40:1 in it, also, buy a new plug, if it's fouled just cleaning it won't unfoul it

 

Thanks for the replies from this forum and others - A few questions. So, do I need a carb rebuild or just a cleaning? If the needle seats are worn sounds like a rebuild. Are these seats contained in a rebuild kit or do I need to get them separately?

I have been mixing oil in a one gallon can 50:1 2.5oz per gallon. But now it looks more like 3-4 oz per gallon depending on a 40:1 or 32:1 ratio. I measure it out in a small one gallon can, mix it and pour it into a tank. What is the significance of 87 versus 92 octane fuel?

I should be able to get a rebuild kit and use the manual to do the job when it gets here. Also, I will replace the plug.

I do not know what the heat level the manual will recommend, but heard you can up the heat level a notch or two for performance. What is the down side of uping the heat level of the plug?

Thanks ahead of time for your help.

 

I have done some more research concerning the carb problems I am having and apparently fuel running out of the carb is a common symptom of needing a rebuild. I have just ordered a rebuild kit and will pick up a new spark plug and fuel line/fuel filter at the parts store. Any other recommendations are welcome.

Thanks.

 

I bought new plugs today and nothing. I unhooked the plug wire and wedged it on the left side of the bike with a new spark plug hooked in the socket so I could see the diode. I kicked it several times and no spark. I tried one of the other new plugs and no spark. . . (I remember in High School autoshop seeing a coil and plug set up on a board in our shop so we could see it run and see what a spark looks like). . . no arc whatsoever. Excellent - progress, now what are my options? Coil and wire, CDI? What next? The contacts in the plug wire socket have seen better days. Is it worth tryin' to clean them or is a plug/coil combo cheap$$ enough to buy?

Thanks for your help.

 

well I would probably start with the wire, or the end cap on the plug wire, yamaha sells the plug end cap for like 5.00 so its cheap insurance if yours is cracked or chipped to replace it.

 

hey man you have no idea how much this sounds like my blaster alright well 1st i changed the reeds nothin happined tried the carb nothin happined i tore off the jug and head see theres the problem the gas was running to lean which caused a hole being burned into the piston on the exhaust side....the rings were shot i only had about 15 psi compression and now we have to send our jug to get resleeved and we need a whole new piston heres my suggestion take off the gas tank (5 min or less) take off the head and the jug if you see any problems thats ur whole problem right there hope this helps

 

sounds like something with the tors system to me! I know that if somethings goin on with it u will not get spark... I know this from a motor swap we did. i didnt have the wire hooked up from throttle and it would not run....no spark.....changed out bunch ofstuff and it ended up being that wire..... old blaster had twisted throttle and that tors was eliminated........ just a thought