Trailblazer fouling plugs nonstop help!!!

BansheeDuner500 · #1 (**permalink**) 02-17-2008

I have a 2000 trailblazer 250 and I bored is .60 over has 35mm carb hsp pipe, hsp clutch kit, k&n clamp on and an outerwears. it is broken in and it runs perfect, but it wont start worth a crap, and it cold fouls the plug everytime i start it. can anyone tell me what i should do? i was looking at a hotter coil and better plug wire for a 400cc polaris 2-stroke, will it work?

gassrx.com · #2 (**permalink**) 02-17-2008

Drop The Pilot Jet,irdium Plugs Are Good. Plug Temp/hotter Can Cause Piston Damage. Make Sure The Needle In The Carb Isnt Stickn Open To.

BansheeDuner500 · #3 (**permalink**) 02-17-2008

I have the irridium plug and i still fouled but i was able to clear it when i got it running, would the Pilot Jet make it foul the plug as much as it does.

gassrx.com · #4 (**permalink**) 02-17-2008

On The Bottom Circuit.the Pilot Could Be To Big, Fuel Is To Heavy Falls Out Of Air/lean Now//// Too Small It Is Not Enough Fuel/lean Also
Main Is A Good Start . Is The Air Filter Clean. Is The Power Clean All The Way Up Till The Problem. Another Issue Could Be The Carb Float Level Which Could Be The Problem Because It Effects The Whole Carb Circuit

BansheeDuner500 · #5 (**permalink**) 02-17-2008

from what i can tell the main jet is dead on, plug is perfect color, and the filter is clean, everything has been adjusted, it also likes to start in very hot weather but if it is cold outside it will foul, could it be the fuel-oil mixture, i premix on it. im still wondering if because of the high compression piston it needs a hotter ignition or higher voltage, in all of the 2-stroke manuals i have they say it has a weak coil, could that just be it and a stock replacment help.

gassrx.com · #6 (**permalink**) 02-18-2008

yeah that would help. what pre mix are you running. i like amsoil it seems to not have a tendance to foul even in the cold, what timing are you running

honda250r · #7 (**permalink**) 02-18-2008

ok whats your premix mixed and also my r was foulin plugs left and right cuz of bad reeds check your reeds and if the plug is tan then you are good on the jetting and also your air screw how many turns out is it

wrczx3 · #8 (**permalink**) 02-18-2008

Quote:

Originally Posted by honda250r

ok whats your premix mixed and also my r was foulin plugs left and right cuz of bad reeds check your reeds and if the plug is tan then you are good on the jetting and also your air screw how many turns out is it

I can guarantee it isn't the reeds because the Trailblazer is a piston port. I would say your premix ratio is off. Why did you disable the injector pump? The injection setup on the Trailblazer is very reliable.

honda250r · #9 (**permalink**) 02-18-2008

idk nothing about trailblazers i just figured it had reeds if it was a 2 stroke and it wasnt a weed wacker or a chainsaw lol sorry

BansheeDuner500 · #10 (**permalink**) 02-18-2008

Quote:

Originally Posted by wrczx3

I can guarantee it isn't the reeds because the Trailblazer is a piston port. I would say your premix ratio is off. Why did you disable the injector pump? The injection setup on the Trailblazer is very reliable.

I had to get rid of the injection pump because with the mods i did to my engine it couldnt keep up and ended up destroying my top-end.