I need a little help from the list on a misfire problem. The car is a 61
BT7. The car runs great on short trips and on cool evening runs. Last
Sunday I went out for a longer drive than usual. Temperature was about 80
degrees after about 1 hour of driving the car developed a misfire upon
acceleration. It was most noticeable at 3000-3500 rpm in 3rd gear. It
kind of sounded like a backfire thru the carburetor. The engine temperature
was 190 degrees. I drove on for about another hour - in order to get back
home and parked in the garage. The next afternoon after work I took it out
for a test run for about 20 minutes it ran beautifully. I could not make it
misfire. I have a petronix ignition and new flame thrower coil. The fuel
pump is in the original location - directly behind the driver under the rear
seat. I replaced the sparkplugs about 200 miles ago. Could this be vapor
lock?
Thanks for the help.
Steve Sanders
61 BT7
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