'34 1101 Eight, Sluggish and Missing After 30 Minutes on the Road

Posted by Tom Beidleman On 2017/8/15 23:57:55

Everything with the car seems fine for the first 6-8 miles and/or 20-25 minutes into a drive. Then, almost without exception, the car starts to miss, feel sluggish, and gives the impression it is going to quit any minute. It doesn't, and I make it back home, but it runs that way all the way back to the house. I can and do maintain a speed of about 35-40 MPH on the way back and I've tried to increase the speed to see what will happen and I get the same coughing & missing as before and the car does not seem to pick up much speed when I try to push it....it sort of makes that sound you get when the engine is running out of gas, a bit of a vacuum/sucking sound and you go no place. Once I back off the accelerator, we're back to the coughing and sluggish sounds and running. Once home I haven't tried to wait awhile and try the drive again, but I've experienced the exact same running issues the last two times I've taken it out, two days apart. The whole run is on flat, level road, and outside temperature was 68 one day and 80 the other. And yes, it has almost a full tank of gas. Any ideas out there about what is causing these issues would be greatly appreciated.
Thanks,
TomB