Sick Dodge

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Steve Jelf
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Sick Dodge

Post by Steve Jelf » Sat Mar 06, 2021 5:59 pm

The old truck starts easily, with just a touch of the starter pedal. But it sure runs rough. The video doesn't do it justice. It sounds rougher in real life. I have a suspicion of what the problem is, but thought I'd ask if anybody has a suggestion of what to look for first.

https://www.youtube.com/watch?v=9BHrb4wGJ1k
The inevitable often happens.
1915 Runabout
1923 Touring


ThreePedalTapDancer
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Re: Sick Dodge

Post by ThreePedalTapDancer » Sat Mar 06, 2021 6:30 pm

Check if each plug is firing. Next do a compression check.

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CudaMan
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Re: Sick Dodge

Post by CudaMan » Sat Mar 06, 2021 7:42 pm

Seems like a lot of smoke coming from the area between the manifolds, hopefully it's just the gasket and not a cracked manifold.
Mark Strange
Hillsboro, MO
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Lgitts
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Re: Sick Dodge

Post by Lgitts » Sat Mar 06, 2021 7:47 pm

Sounds like a stuck valve. Those flathead sixes are notorious for having a valve stick after sitting all winter. Start with compression check. Might consider a running compression check to see if a valve spring broke.

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Mark Gregush
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Re: Sick Dodge

Post by Mark Gregush » Sat Mar 06, 2021 7:59 pm

Many years ago I had a 46 1 ton. In the summer it was very hard to start. An old timer told me it more then likely needed the starter serviced because it was drawing too much not leaving enough for the coil to fire.
I know the voices aren't real but damn they have some good ideas! :shock:

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tmodeldriver
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Re: Sick Dodge

Post by tmodeldriver » Mon Mar 08, 2021 12:01 pm

Howdy, Steve. You might check for a cracked or carbon tracked distributor cap. Good luck. Bob

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RichardG
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Re: Sick Dodge

Post by RichardG » Mon Mar 08, 2021 12:49 pm

MR STEVE, I'M A 83 YEAR OLD MECHANIC, AND HEARING THE ENGINE RUNNING, ITS MY OPINION THE CARBURATOR IS GUMMED UP, THERE ARE TESTS YOU CAN PREFORM TO ISOLATE THE CONDITION, OVER THE YEARS WHO KNOWS WHATS BEEN DONE TO THE POOR THING, IVE SEEN CARBON PLUG WIRES USED ,NOT GOOD FOR THE 6 VOLT SYSTEM AS WE ALL KNOW TO DAYS CORNAHAUL GAS SUCKS IN OLDER ENGINES BECAUSE THE OLD TIMERS SET AROUND MORE THAN THEY SHOULD, THIS GIVES THE GAS TIME TO LOOSE ITS GOODNESS, AND BREAK DOWN CAUSING MOISTURE TO SETTLE IN THE BOTTOM OF THE FUEL TANK, OLDER ENGINES THAT GET USED DAILY AVOID THIS SITUATION BEING THE GAS DON'T HAVE TIME TO BREAK DOWN, THE SINGLE BARREL CARB ON THE DODGE IS SO SIMPLE BUT THE PORTS ARE OR WERE OF A CERTAIN SIZE IN THE DAY, OVER TIME THEY BECOME SMALLER DUE TO THE BUILD UP OF CRUD CHANGING WHAT ITS JOB WAS DESIGNED FOR. MANY FACTORS ENTER HERE, RINGS WEAR, VALVES WEAR AND CARBON BUILD UP VALVE STEAMS WEAR CREATING VACUUM LOSS, AND SO ON, SO, AT FIRST DON'T TRY TO DIG TOO DEEP, CK COMPRESSION, THIS WILL GIVE YOU AN IDEA OF WHAT TO LOOK FOR NEXT, DO CK WIRES, IF THEY ARE CARBON REPLACE THEM WITH COPPER AS THEY SHOULD BE, SET POINTS TO 16 THO, BY ALL MEANS LOOK INTO THE CARB, THAT MAY BE THE REASON, SOUNDS TO ME LIKE A FEW OF THE 6 CYLINDERS ARE STARVING, OVER THE YEARS IVE HAD GREAT FUN MAKING A OLD WORN ENGINE RUN ITS BEST BY ADJUSTING MORE THAN REPLACING...GOOD LUCK, I HAD A D-100-YEARS BACK TOUGH OLE GAL...AFTER THOUGHT--WHEN ITS IDLING SPRAY CARB CLEANER ALONG INTAKE MANIFOLD GASKET MATING SURFACE TO THE BLOCK, IF NO CHANGE IS DETECTED IN ENGINE SPEED, THETE IS NO LEAKS.

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John Warren
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Re: Sick Dodge

Post by John Warren » Mon Mar 08, 2021 8:51 pm

How are you doing on your truck? Definitely has a bad exhaust gasket on #1. Check the points and condenser. Also like said Check the cap. May just need points reset. They get where they stop opening.
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Keep it simple and keep a good junk pile if you want to invent something :P

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Topic author
Steve Jelf
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Re: Sick Dodge

Post by Steve Jelf » Mon Mar 08, 2021 10:35 pm

Some of the suggestions are along the lines of what I was suspecting. Thanks to all. I'll start checking into things when I have a nice day for working outside. :)
The inevitable often happens.
1915 Runabout
1923 Touring

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Topic author
Steve Jelf
Posts: 6463
Joined: Fri Jan 04, 2019 9:37 pm
First Name: Steve
Last Name: Jelf
* REQUIRED* Type and Year of Model Ts owned: 1923 touring and a few projects
Location: Parkerfield, Kansas
MTFCA Number: 16175
MTFCI Number: 14758
Board Member Since: 2007
Contact:

Re: Sick Dodge

Post by Steve Jelf » Sun Jul 18, 2021 11:43 am

It occurs to me I should report how this ended. I tested all the spark plugs under compression. #1 was intermittent and #2 was dead. Two new plugs were the answer. :)
The inevitable often happens.
1915 Runabout
1923 Touring

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CudaMan
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Board Member Since: 2013

Re: Sick Dodge

Post by CudaMan » Sun Jul 18, 2021 3:18 pm

Thank you for sharing the solution and closing out this thread. :)
Mark Strange
Hillsboro, MO
1924 Cut-off Touring (now a pickup)


Norman Kling
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Re: Sick Dodge

Post by Norman Kling » Mon Jul 19, 2021 11:17 am

Beside all the other things on the distributor, check the shaft bushings. When the bushings wear, the shaft wobbles and the point setting will change causing a dwell problem. In that case, you need either to rebush and maybe a new shaft in the distributor, or a rebuilt distributor. There is a MOPAR club. Maybe they can help you solve the problem.
Norm

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