I notice that when I'm going up hill my engine keeps missing, but it dose not back fire. Any ideas what the problem is?
Possible fuel flow issue. Check your sediment bulb and carb for dirt. Also check to make sure the fuel tank vent is open.
Could also be the flywheel and magnets shifting back from the coil ring if there happens to be too much end play in the rear main crankshaft bearing.
Check your timer as well Warren. Chris.
Try switching to battery while going uphill.
It it straightens out I think you found a problem.
If your car is pre 26, it could be low gas in the tank. Vapor lock is also possible.
Other possible causes would be end play in the crankshaft causing the magneto to lose power, or the spark plugs need to be replaced. It could even be a weak ignition coil.
The fuel problems tend to behave like the car is running out of gas and if you give it less gas it will get better.
Ignition problems do not run like it is out of gas, but it will misfire on one or more cylinders when under hard pull but run smoother when going on level or downhill. Whatever you do, try one thing at a time until you find the source of the problem.
Thanks to all, I'm driving my 1926 coupe when this happens. Thanks Craig, I will try that next time I'm out for a drive. I have checked the gas flow form the sediment bulb and it is fine, of course that's with the engine not running. Chris, I have cleaned and oiled the timer, but will do so again. I have a new Anderson that I might try. Norman, I will check and clean the spark plugs.
A 26 is less likely to have fuel problems, but if you have an in line filter other than the original sediment bulb, the filter could be to blame. If you have the filter, take it out of the circuit and clean your sediment bulb. Then see if your problem stops. As I said above, a clogged fuel line will just run smoothly, but stop like it is out of gas. When you increase the throttle, the engine will not respond. However an ignition problem will run rough and lose power, but keep on running.
When is the last time you had your coils checked?
Warren, if you are running an Anderson they will break down under load once they are worn. I got about 8 years trouble free motoring out of my first Anderson before it started doing this. Quite perplexing at the time!
Even with lubrication they do wear eventually. Replacing the innards is simple as well. Hope this helps, Chris.
Mine seems to work the best with .025 plug gap.
Might check the gap and close it up a bit if it's wider.
Thank you again everyone, this afternoon I cleaned and gapped my spark plugs (.30). They had carbon around the base, but the tip and electrode were clean. I also cleaned and lube the Anderson timer and I installed a new ignition switch, because the old one did not always make contact. When I went for a test drive it missed a couple of times before it was fully warmed up. After that Seabiscuit run much better, however I still had a few misses. My problem is that the man I bought it from dose not know the history before he got it. Also the fuel cap does not have a breather hole like my seventeen and there seems to be some kind of rust treatment in the fuel tank, it looks whitish.
No vent hole could be part of the trouble.
Going uphill requires more fuel per mile. If the draw exceeds the tank ventilation rate (usually, simple leakage around the cap threads may be adequate for easy driving), the fuel level in the float-bowl will drop too low and not mix the fuel and air properly. I have never had any improved Ts, so I don't know if the tank has a vent hole other than the cap or not. Might be worth a look.
Drive carefully, and enjoy, W2