BLOODRAGE Posted June 23, 2012 Report Share Posted June 23, 2012 so im running a lil rich,the ends of my silencers are wet with oil and the plugs are black. im using 300 mains with the needle clip one down.ive tryed the needle in the middle postion and it had zero throttle responce but with the clip one down it runs like a champ.with the 76mm pistons should i try 290's? im kinda to chicken to do it because what if im too lean,there goes my investment if you know what i mean Quote Link to comment Share on other sites More sharing options...
dcalsv02 Posted June 23, 2012 Report Share Posted June 23, 2012 What premix ratio are you running? From what i have read on this forum, a little oil on the end caps isn't a bad thing but you don't want it pouring out or anything. You might need to tune the other circuits before your need to change your main. What is the rest of your setup? Quote Link to comment Share on other sites More sharing options...
BLOODRAGE Posted June 23, 2012 Author Report Share Posted June 23, 2012 im running 32-1 the rest of the set up is in the sig Quote Link to comment Share on other sites More sharing options...
dcalsv02 Posted June 23, 2012 Report Share Posted June 23, 2012 I run 50:1 in mine. If your plugs are wet and black, chances of you burning your motor up by changing one jet size are pretty slim. Are your carbs tuned properly? air screw? pilot? synced? Quote Link to comment Share on other sites More sharing options...
BLOODRAGE Posted June 23, 2012 Author Report Share Posted June 23, 2012 as far as i know they are in sync.they both move at the same time and at wot are at the same hight.i just tryed 290's and it ran like crap so im thinking i have to go back to 300's and try the needle one more clip up so it moves the needle down. the air screw with the 290's was at 1.5 out.with the 300's it was set at 2.0 before i changed the mains there was alot of oil on the silencers and it would smoke like a mofo when i started it and dissapear at high speed until i idle it Quote Link to comment Share on other sites More sharing options...
dcalsv02 Posted June 23, 2012 Report Share Posted June 23, 2012 describe how it ran like crap. Did you try new plugs when you changed jets, since they were all loaded up? Quote Link to comment Share on other sites More sharing options...
BLOODRAGE Posted June 23, 2012 Author Report Share Posted June 23, 2012 shit no lol i forgot to. it just has no throttle responce like it does with the 300's Quote Link to comment Share on other sites More sharing options...
dcalsv02 Posted June 23, 2012 Report Share Posted June 23, 2012 Try to find jets between 290 and 300. Also try adjusting the needle clip with the 290's in it. adjust one thing at a time, so you know what is working and not working. Quote Link to comment Share on other sites More sharing options...
tarmacsti Posted June 28, 2012 Report Share Posted June 28, 2012 Personally I would start by changing your mix to 50:1, all the black spooge you taking about is caused by too much oil... and more oil means less fuel (youre running lean) Not to flame you but its a common misconception that wet plugs are caused by rich mixture, which in fact not totally true when it comes to 2strokes. You already running a high volume of oil (which I think is the cause of all your reported spooge) Quote Link to comment Share on other sites More sharing options...
toytech Posted June 28, 2012 Report Share Posted June 28, 2012 Personally I would start by changing your mix to 50:1, all the black spooge you taking about is caused by too much oil... and more oil means less fuel (youre running lean) Not to flame you but its a common misconception that wet plugs are caused by rich mixture, which in fact not totally true when it comes to 2strokes. You already running a high volume of oil (which I think is the cause of all your reported spooge) I would also run a good synthetic oil. Quote Link to comment Share on other sites More sharing options...
Trick2stroke Posted June 28, 2012 Report Share Posted June 28, 2012 I understand you wanting to protect your investment but running too rich of a mixture isn't the way to do it. As others have said, switch to a good synthetic oil that recommends a 50:1 ratio, get a few sets of plugs, and play with one jetting circuit at a time and record the differences on paper and report back. Even take pics of the plugs. Depending on symptoms like sound, plug chop, and power characteristics it's easier for those of us reading to tell if you're on the lean or rich side. Quote Link to comment Share on other sites More sharing options...
shanYE west Posted June 28, 2012 Report Share Posted June 28, 2012 Its not the oil or oil ratio... Its the jetting. I've ran 32:1 and 20:1 for years with no issues. I noticed your running a large CC setup.. Lets start with the basics. What carbs are you running? (I'm assuming stock?) What type of air filter? Has the motor passed a leak down? Whats your current jetting? Quote Link to comment Share on other sites More sharing options...
ClayAiken Posted June 28, 2012 Report Share Posted June 28, 2012 I run 32:1 im a little rich and i have some oil on the ends of the down turns at my silencer im not fouling plugs or anything. Looks like your into the jetting game. Quote Link to comment Share on other sites More sharing options...
shakar Posted June 28, 2012 Report Share Posted June 28, 2012 300 main jet dont seem rich but whats your elevation?imo id do a leak down test , if your good there. id fill one hand with new plugs and the other with jets ...its a very ,very slow trial and error thing. but youll be happy when you get it right goodluck Quote Link to comment Share on other sites More sharing options...
RadarRacing Posted June 28, 2012 Report Share Posted June 28, 2012 Worn out reeds can cause em to spit crap out of the carbs more than normal regardless of jetting. In my opinion oil ratio or jetting doesnt have anything to do with spitting in the carbs. Quote Link to comment Share on other sites More sharing options...
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