first ill explain my situation im some what new to rc cars...ive ran some electrics and 2 nitros all of which ive gotten for free from my great uncle(they are all older models)with the nitro's i had a few small engine prblms prbly due to air leaks cuz they are so old but nothing that couldnt be fixed for he most part by tuning or adjusting linkage...but with the latest car he sent me which isa kyosho original inferno 4wd with a .21 os max rx-b engine(i built the kit very carefully and it seems there are no mechanical prblms)...the car wants t take off no matter how i have it tuned...the car even runs with the throttle all the way closed so i assume if its not getting air from there it has a VERY bad air leak somewhere.ive tried a few things alrdyincluding taking it apartand looking over almost everything... the o-rings/gaskets look to be fine,i tightened everything and sealed off a few areas with some engine sealant/gasket maker...when i run it there is a small amount of fuel leaking from under the engine head...should i also try the engine sealant there??(i havent yet because i dont want to get any inside the engine)i am using the correct glow plug for the car so i dont think its that...any help would be great thanks in advance

Check your clutch spring, if it's broken it will make it want to drive no matter what you do. Unless you mean it's idleing way to fast noo matter what adjustment, but the way you explained it, it sounds like a broken clutch spring.

sry...thats my fault for the bad explaination,yes its idleing way to fast no matter what i do...but i did just check my clutch...just to be sure,....ive almost run out of ideas on this one could it possiby be a prblm with the tuned pipe im running on it is so i could try to run it without the pipe...i wont be able to update u guys on how it runs for a while because its winter here but i still would love any of ur ideas so i can have it rdy when the snow melts

I had a problem like that once, it turned out it had the wrong carb on it. What brand of car is it. The one I was working on was an HPI RS4 with stock engine and it had a OS carb on it, but no matter how you tune the carb it didn't matter it wouldn't idle down to a normal idle I change it to the single adjustment type carb it was supposed to have and it idle perfect after that. If it has the right carb I would definatlly suggest changing the O-Rings on the carb, typically in my experiance if there is a leak in the exhaust sytem you will have trouble getting it to stay running or run at all. sounds like your getting good compression in the exhaust sytem. Take the carb off take it apart and check that the O-Rings aren't rotted, check that none of the jets are semi plugged and check that the ends of the needles aren't gouged.