Packard Forum Index » V-8 (1955-56)

I have no idea what happened to my car It Runned perfectly fine then it just didn't anymore I was thinking is it bad gas pump but it can´t be becouse it feed fuel perfecly fine and When I crack the line open there is pressure of fuel inside then I was thinking is the carb clogged but it feels like my car gets too much fuel so it doesn´t run and what happens when I try to start it it starts but it shuts of immediately and When I gave gas from straight up bottle or pressed gas few times before start it just didn´t do nothing until I cranked to gas out from exhaust I tried to start it too with gas pedel on the floor too and it shot the flame out and now it start more poorly only with pedal on the floor

Flooding? Float needle sticking?

I don´t think so it feels like it Runs so rich it can´t starts but it doesn´t make eny sence becouse it runned with that mixture before and I tried 2 different carburators to it and both do same thing I even openned other one of them and everything seems fine

Timing

"Ran perfectly fine" except last year you had almost the exact same problem:packardinfo.com/xoops/html/modules/newbb/viewtopic.php?post_id=279937

I would pull the plugs to make sure they look OK and compression test at least a couple of cylinders. All of that should be fine, but it's worth it to check the plugs if the engine has ran rough before, as they can get fouled. Tip: for the #8 plug, crouch down so your forearm can go horizontal between the air duct and exhaust manifold.

Assuming they are OK or you clean them off, the problem has to be carburetion or timing, as you have already checked fuel. If it has ran fine intermittently, then the timing is probably OK for now. If it were off, it would consistently run bad. But you can check it with a feeler gauge (read the service manual for instructions).

You may want to use an inline spark tester (very inexpensive) on the coil while cranking, to confirm the ignition system is attempting to fire all cylinders. The light would flash at a constant frequency.

Assuming that is OK, I think you need to rebuild the carburetor. I suggest buying the kit from Chicago Carb. I think once it's rebuilt, the engine should run much better, then you can use a timing light to fine-tune the ignition system.

Timing chain problem?