'55 Speedster in Colorado. Car is fatory stock and not modified in any way. 259 Passmaster with automatic.
The car has an intermittent problem that all electrical power is gone. Everthing goes dead - no lights, no horn, no dome light, no ignition, nothing. Only does it sometime and it always returns after I fiddle with the ground strap, starter relay and igntion relay. All connections are clean and tight, as I have taken them apart and cleaned them. Car starts and runs fine as long as the electrical power is present. I'm thinking bad ignition relay. Any other ideas?
Also losing engine power when climbing steep grades in the heat at elevation (5,280 - 7,500 ft climb to get home). Engine seems to begin surging and/or missing, and the automatic tranny seems like it is trying to downshift but can't quite decide if and when to do it. Shifts down fine when it's cooler, but not when hot.
Also experiencing hot re-start problems - car will crank and try to start, but if it doesn't re-start quickly, it'll crank more slowly and maybe not re-start until cooler. I'm thinking either vapor lock or possibly flooding from heat sink. Holding pedal to floor while cranking does not work, so looks like vapor lock. Fuel pump is of unknown age, but probably not too new. Would a new one help? Hate to modify, but would a low pressure electric fuel pump help and does anyone know where to find a 6 volt? Would removing the oil bath air filter and replacing it with a dry element help keep things a little cooler on the intake side enough to help at least a little.
I want to drive this car during the summer, but it's obviously having a little trouble with the altitude and summer heat (high 90's yesterday). I have re-jetted the carb to altitude and if anything, it's probably still a little on the rich side.
All help and advice wil be greatly appreciated!
Mike with Speedster
The car has an intermittent problem that all electrical power is gone. Everthing goes dead - no lights, no horn, no dome light, no ignition, nothing. Only does it sometime and it always returns after I fiddle with the ground strap, starter relay and igntion relay. All connections are clean and tight, as I have taken them apart and cleaned them. Car starts and runs fine as long as the electrical power is present. I'm thinking bad ignition relay. Any other ideas?
Also losing engine power when climbing steep grades in the heat at elevation (5,280 - 7,500 ft climb to get home). Engine seems to begin surging and/or missing, and the automatic tranny seems like it is trying to downshift but can't quite decide if and when to do it. Shifts down fine when it's cooler, but not when hot.
Also experiencing hot re-start problems - car will crank and try to start, but if it doesn't re-start quickly, it'll crank more slowly and maybe not re-start until cooler. I'm thinking either vapor lock or possibly flooding from heat sink. Holding pedal to floor while cranking does not work, so looks like vapor lock. Fuel pump is of unknown age, but probably not too new. Would a new one help? Hate to modify, but would a low pressure electric fuel pump help and does anyone know where to find a 6 volt? Would removing the oil bath air filter and replacing it with a dry element help keep things a little cooler on the intake side enough to help at least a little.
I want to drive this car during the summer, but it's obviously having a little trouble with the altitude and summer heat (high 90's yesterday). I have re-jetted the carb to altitude and if anything, it's probably still a little on the rich side.
All help and advice wil be greatly appreciated!
Mike with Speedster
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