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