I am working on a 1985 RX-7 12B and I got this weird problem with it, the battery gauge and fuel gage used to work but not it dose not then the other day some how I got the fuel gauge to work but now it dose not, and I still can get the car to start it turns over, has spark, air and gas but not bang, I took a regular compression tester and took bottom release valve off so that the air dose not stay in the hose but I only read 15-20 psi is it still carbon locked o and the fuel pump dose not allays kick in can some one help me out please, and when I fill the chamber with ATF 3 days latter threes lots of gas come out or gas smell this car has been sitting hear for 3 years so should I just take the motor and carburetor apart and clean them up and put it back to gather, I can rebuild regular engines do you think I can fix this one?