i got a 78 Z Ive adjusted the TPS sensor and the timing is at 10* as my book states, but i got this intake pop that wont go away i am new to the z's. i try and rev the motor and as it slowly trys to pick up rpm's there is an intake pop thats keeping the motor from gaining rpm's. an it also is popping through the exhaust. ive done seafoam 2 times and figured it was just dirty injectors but apparently bot... any help would be much appreciated.