I did a b16a swap into my 90 CRX DX and its been having a problem around 3k to 4k rpm And if I get on it starting out it blows out blue/black smoke and then it goes away after a second.... I call it my escape mechanism... (i'm like a squid) But I really want to get rid of it does anybody know what I can do to fix it? It keeps getting the back of my car all dirty or else I wouldnt really care about it.