Panama
Member
- Joined
- Aug 26, 2007
- Messages
- 369
- Reaction score
- 5
- Points
- 18
- Location
- Perth
- Members Ride
- '87 VL Calais with L67
hey guys, i know its not a commodore but i'm having trouble getting my hj 253 manual to idle and run after replacing head gaskets, intake manifold, cam, dizzy, coil and carb.
its running a single plane redline manifold, a rochester quadrajet, a points-less distributor and the cam is a crane cch-276. it has pre pollution heads.
i checked that the timing mark is right for tdc by watching the rockers on cylinder one so the h/balancer isnt slipping, the cam rotor points at cyl 4 when this happens which is oppisite cyl 1 on the dizzy so that means the dizzy isnt 180 out.
i've also disconnected the distributor advance vac line and all the vac lines off the carby and blocked them off for now to make sure its not a leaky vac line
i can get it to run at like 1500rpm and an insane amount of ignition advance (crank mark sits at the bolt head on the timing cover that is between the 2 bolts for the fuel pump) but as soon as i try to lower the idle or timing it dies.
its also difficult to get the engine to start, i need to pump the accelerator a couple times then crank with my foot to the floor. if i dont do it this way it turns over and then i get a single rhuum and it dies straight away.
any ideas as to what it could be thats giving me these dramas?
its running a single plane redline manifold, a rochester quadrajet, a points-less distributor and the cam is a crane cch-276. it has pre pollution heads.
i checked that the timing mark is right for tdc by watching the rockers on cylinder one so the h/balancer isnt slipping, the cam rotor points at cyl 4 when this happens which is oppisite cyl 1 on the dizzy so that means the dizzy isnt 180 out.
i've also disconnected the distributor advance vac line and all the vac lines off the carby and blocked them off for now to make sure its not a leaky vac line
i can get it to run at like 1500rpm and an insane amount of ignition advance (crank mark sits at the bolt head on the timing cover that is between the 2 bolts for the fuel pump) but as soon as i try to lower the idle or timing it dies.
its also difficult to get the engine to start, i need to pump the accelerator a couple times then crank with my foot to the floor. if i dont do it this way it turns over and then i get a single rhuum and it dies straight away.
any ideas as to what it could be thats giving me these dramas?