The knock sensor will not disable your vehicle its purpose is to retard the ignition timing when it senses a detonation/spark knock/pinging
You stated putting cleaner into the intake has no effect and also has spark. If compression and fuel were okay it should fire and start.
If its a distributor system-unclip/unscrew the D/Cap while cranking the engine is the rotor spinning? If not investigate the T belt/chain.
Rotor spinning could be a valve and ignition timing problem that's preventing it from starting up.
Check the fuel pressure and comeback.
Thursday, May 10th, 2007 AT 12:26 AM