Really weird ignition issue...
I rechecked the timing and placement of the distributor. Both are where I like them. I was thinking that the vacuum can was too far clockwise which would be expected if the rotor phasing was way off.
I pulled out the Mityvac.
This is the first time I’ve messed with it. I’ve had it for 12 years. An old timer that got out of the hobby gave me a bunch of stuff and this was in with it all.
I squeezed the handle and can get the dial to rise but it won’t stay. I even pulled the hose and plugged the end of the pump body with a finger and it still drops. I’m guessing the dial is supposed to hold if the end is plugged and the pump isn’t leaking.
Regardless….
M
I just found that the dial will hold if the handle is squeezed and then released a little bit.
The vacuum advance canister in this distributor only pulls to 6-7” and drops. I tested another distributor and it goes to 10” and while it also drops, it does so much slower. I take that to mean that the one in the car does leak vacuum.
It doesn’t explain why the car runs terribly with the vacuum can connected.
The car runs great otherwise. Excellent idle, great throttle response, plenty of power. The car has a 2.76 diff in it but it still feels peppy.
I rechecked the timing and placement of the distributor. Both are where I like them. I was thinking that the vacuum can was too far clockwise which would be expected if the rotor phasing was way off.
I pulled out the Mityvac.
This is the first time I’ve messed with it. I’ve had it for 12 years. An old timer that got out of the hobby gave me a bunch of stuff and this was in with it all.
I squeezed the handle and can get the dial to rise but it won’t stay. I even pulled the hose and plugged the end of the pump body with a finger and it still drops. I’m guessing the dial is supposed to hold if the end is plugged and the pump isn’t leaking.
Regardless….
I just found that the dial will hold if the handle is squeezed and then released a little bit.
The vacuum advance canister in this distributor only pulls to 6-7” and drops. I tested another distributor and it goes to 10” and while it also drops, it does so much slower. I take that to mean that the one in the car does leak vacuum.
It doesn’t explain why the car runs terribly with the vacuum can connected.
The car runs great otherwise. Excellent idle, great throttle response, plenty of power. The car has a 2.76 diff in it but it still feels peppy.