Who Can Diagnose THIS Total Mystery? Win A Prize?

[SteveB31]

I think it is vapor locking.

Take it for a long ride and make it quit running. After it quits, raise the hood, and pour a bottle of water on the carb.

If it starts back up and runs, then it was vapor locking.

Now......to fix that , can be a chore, depending on the caus (several of whcih were described in this thread.)

Whats the prize?

Steve

[Gary WA]

Originally Posted by SteveB31

I think it is vapor locking.

Take it for a long ride and make it quit running. After it quits, raise the hood, and pour a bottle of water on the carb.

If it starts back up and runs, then it was vapor locking.

Now......to fix that , can be a chore, depending on the caus (several of whcih were described in this thread.)

Whats the prize?

Steve

Not in 3 miles at speeds of 25 or less!

[MikeK]

Originally Posted by BRENT in 10-uh-C

11111) Two loose lugnuts on the Left Rear wheel.
OR
22222) Improper mixture of the radiator coolant.
.

Never underestimate thinking outside the box! Brent, you may be correct.

[Gary WA]

Originally Posted by BRENT in 10-uh-C

WOW, Holy Cow again!! Look at all these "gotta-be" answers!! I sure hope I get selected to be on the ARC (Answer Review Committee) because I am definitely leaning towards the award winning diagnosis here of either the;

11111) Two loose lugnuts on the Left Rear wheel.

OR

22222) Improper mixture of the radiator coolant.


Both of these definitely seem like the sure-fire winners. Oh, and that one about the muffler and/or tire pressure sure seems worthy of an Honorable Mention too! It truly is amazing the responses we receive when those two little innocent words (Backfire & Prize) are used in the same posting!!


.

Checked the air in the tires-new- Rotated the tires also no help! Also turned the fan belt around no help! Our next step is to drive the route backwards Just maybe it'll work- driving Model a's since 12 yrs old now 63. I'm baffled!

[Fred K-OR]

Here it goes again, "I had a similar problem", but I did. Like mentioned a number of times, I replaced the coil. So far, but I am not sure, this has worked for me. I need to do further tests to prove it.

[Mitch//pa]

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Do I have to pay shipping and handling for the free prize??

[ct1932ford]

Originally Posted by Mitch//pa

Do I have to pay shipping and handling for the free prize??

Just what I always wanted a used/bad coil

[Stretch Cab]

It's an 84 year old truck, maybe it just needs to pull over and rest awhile.........

[Gary WA]

Originally Posted by Stretch Cab

It's an 84 year old truck, maybe it just needs to pull over and rest awhile.........

New Motor 1000 miles on it!!

[oldmanandakid]

Oh man, mine is running good but after reading all of this stuff I am afraid to drive it.

[RHD]

I would look seriously at your coil. They are heat sensitive. My fathers old Chrysler did the same as your car, and played up on the same stretch of road every time. Once the coil had reached a certain temperature it made the engine miss until it stopped altogether.

[Dave Mc]

Coil

[Gary WA]

Originally Posted by Dave Mc

Coil

Changed out with two different known good coils

[Gary WA]

Originally Posted by Dave Mc

Coil

Sorry tried 3 different ones No difference in performance

[dumb person]

This happened on a car i drove, it was a combination of bad coil, internally fractured distributer cap that shorted out 2 plugs and had poor connections to the other 2 only when it was hot. Cold it was fine. Bad condenser and to finish it off the generator cutout was faulty and caused voltage spikes somehow (bad connections inside). Had to fix the lot of them before it would run properly for a length of time.

[H. L. Chauvin]

Knew an elderly, proud highly educated gentleman, (college graduate), who died about 50 years ago at age 80.

He never owned a car; but when he died he still had two (2) loyal mules & a 1930's bicycle.

Every time he saw a stalled car, he would go to the driver to tell him he knew why his car would not start.

His explanation of the cause of engine failure, even on modern cars, was "Classique" and always the same:

"Your magneto is damp!"

On this particular occasion, with all of Brent's lovely "Holy Cows" etc., poor soul would definitely be worthy of at least an honorable mention if he would not have been first & won "The Prize."

[Mike Peters]

I think this group has covered pretty much all the snafus possible. One time on a fall tour, a member was having similar problems, and so I disconnected his gas line from the carb, swung it up so I could blow on it, and problem solved. When Mr Wilson does solve the problem, and he will with all this expertise at his fingertips, I would like him to tell us what exactly the problem was for sure. We are all dying to know.

[Gary WA]

Originally Posted by Mike Peters

I think this group has covered pretty much all the snafus possible. One time on a fall tour, a member was having similar problems, and so I disconnected his gas line from the carb, swung it up so I could blow on it, and problem solved. When Mr Wilson does solve the problem, and he will with all this expertise at his fingertips, I would like him to tell us what exactly the problem was for sure. We are all dying to know.

Removed the gas valve, gas line sediment bowl, line to carb,gas tank spotless,gas flows are all good! Don't dye yet we will find the cause and report so we can win the Prize,what ever that might be. We have special forces coming in next week to do it all over.. RESULTS to Follow!!! Thanks for all your thoughts and prayers.

[Jazzjr]

I had the same Backfiring situation happened to me, when the engine came up to normal operating Temps. Recently installed a Modern Upper Plate w/Chinese Parts.

I first changed out the condenser, same problem it would backfire when it got Hot. Drilled out another hole in my Re pro Gas cap, no help.
I ordered another set of Points Echlin, installed them, solved My Backfire Problem. Took the first set of Points Reinstalled them, to make sure that was the problem, started backfiring again, removed the Chinese points and Garbaged them.

[700rpm]

All these "It must be" comments demonstrate all the solutions problems to a very common problem in 80+ year-old cars. It will be very interesting to find out what it really was in this case!