Howell Tbi Vacuum Diagram. When driving it is fine with the exception that it sometimes dies without stuttering after i hit it hard. Affix your new howell tbi sticker on top of the old vacuum diagram.
Diagram howell tbi vacuum diagram. Typical tbi motor will idle with 20 21 inches of vacuum stock. In a nut shell all you have to do is connect the pcv valve line to the top port and then t it with the large line running down to the charcoal canister.
I had the same tbi on a amc 360 and it showed much the same symptoms.
Electronic control module ecm gm pn 1227747. Also make sure there are no tools left in the engine compartment. Installation instructions throttle body fuel injection harness you have just acquired on of our. If this is the case.