63RancheroGuy
Active member
Hi guys,
This is my first post.
I've got a new (to me) '63 Ranchero with the 170ci and 4-speed manual. Engine was rebuilt about 500 miles ago, but those 500 miles took about 15 years to put on - so it hasn't been driven a lot and gas has been sitting in it for a while.
I got the idle and timing set (for now). Idles good after she's warmed up. BUT here's the problem, when I step on the gas more than just a little it lags, almost dies, sputters, until I let up on the accelerator.
My first thought: Accelerator Pump Diaphragm! I didn't see any gas squirting in when I press down the accelerator or pull the linkage. So I changed it out, and according to some of your suggestions in the forum I took a flat file to the "housing" because it had warped - quite a bit. Put it back together, got a nice good seal, no gas leaking. BUT! Still no gas squirting - still the same acceleration lag.
I'm thinking one of the accelerator pump jets could be plugged?
Should I be able to see gas squirting when I press the accelerator down?
If one of the accel pump jets is plugged, how do you check that, and how do you fix that?
I did a quick check for vaccuum leaks (starting fluid test) but didn't find any. Is there a better way to test?
Any suggestions greatly appreciated.
Adam
This is my first post.
I've got a new (to me) '63 Ranchero with the 170ci and 4-speed manual. Engine was rebuilt about 500 miles ago, but those 500 miles took about 15 years to put on - so it hasn't been driven a lot and gas has been sitting in it for a while.
I got the idle and timing set (for now). Idles good after she's warmed up. BUT here's the problem, when I step on the gas more than just a little it lags, almost dies, sputters, until I let up on the accelerator.
My first thought: Accelerator Pump Diaphragm! I didn't see any gas squirting in when I press down the accelerator or pull the linkage. So I changed it out, and according to some of your suggestions in the forum I took a flat file to the "housing" because it had warped - quite a bit. Put it back together, got a nice good seal, no gas leaking. BUT! Still no gas squirting - still the same acceleration lag.
I'm thinking one of the accelerator pump jets could be plugged?
Should I be able to see gas squirting when I press the accelerator down?
If one of the accel pump jets is plugged, how do you check that, and how do you fix that?
I did a quick check for vaccuum leaks (starting fluid test) but didn't find any. Is there a better way to test?
Any suggestions greatly appreciated.
Adam