i wanna say 40pounds of torque..but dont quote me on that ..there is a service manual floating around on here..use the search and it should pop upI:I
Blaster is Backfiring
- Thread starter recruiter101st
- Start date
I will drop a 290 in it tomorrow afternoon, Im at 780 feet above sea level with 60 degree weather. But your saying im lean all the way around? at idle mid and main?
me and pharangle (the godfather) with much experimentation found it to be a more reliable plug and burns much more efficiently than the es plug which is a traditional cheapo copper core plug.. the es in my experience likes to mysteriously malfunction or foul...give it some time i promise urs will foul hahaI:I
the br9eg is a great race plug..ran it in all of my race mx 2-strokes that all were heavily modified
also why alot of the old timers on here recommend the es is because they are set in their ways because thats what the book says haha if yamaha asked them to jump they say "how high?" lol
deff try the 290 main and if thats too fat try a 280..backfiring is the key indications of having too much air.
my blaster when i jetted it for sea level to 1000ft elev. was running a 300 to 310 main but i had some major port work
trust me with the br8eg man..wont hurt ur bike or anything,,its the same temperature plug...just better
So just put the 290 in and see what happens huh? Just dont understand with a 270 and putting the airbox lid on why it got worse. If its lean that should have helped
mine does that too..the lid restricts tooo much air if you have even the slightest mods it seems and doesnt allow it to breathe ..its a game of evils haha
If he has to run a 290 with essentially just an air filter and the timing advance, then he has an air leak as far as I'm concerned.
lol i though it would serve as inspiration but it probably would lead the the exact opposite haha
Well anywhere, but TYPICALLY around the intake manifold/reed cage area. After that it's typically the head gasket, then base gasket, then crank seals.
I would still back the timing down first and check the key. No need to start tearing the engine apart if it's fine and sealed already. If you start it up again after putting the timing back to stock and the key is fine, and it still is backfiring, then you know ASAP to stop and the issue is more than likely an air leak.
typical leaks are all the ones i mentioned before.
spark plug, jetting and carb adjustment, gasket check and torque..all that should solve the issue..if that doest not fix it then you will have to do a compression and leak down test to try to pin point the problem..
Well then, 1st things 1st. Will Check the Woodruff key, If its good will start to check for air leaks. Damn I just wanna ride.
and what he said haha.. if you combine what me and lrd are saying you will be up n running in no timeI:I