Slow To Crank

Discuss all things Model T related.
Forum rules
If you need help logging in, or have question about how something works, use the Support forum located here Support Forum
Complete set of Forum Rules Forum Rules

Topic author
CatGuy
Posts: 328
Joined: Wed Apr 06, 2022 9:50 am
First Name: Scott
Last Name: Hunt
* REQUIRED* Type and Year of Model Ts owned: '26 Runabout
Location: Pella, Iowa

Slow To Crank

Post by CatGuy » Fri Sep 12, 2025 1:06 pm

Not exactly what you think. Last night I tried starting my '26 for the first time in two years. I tried charging the battery, but it was taking it's time getting there so I decided to try my luck at crank starting it as the coils were buzzing. I got it to 'pop' a couple times and even got a 'free start' once, but it didn't start. The question I have is, how hard is it to crank over? I could barely get the crank to go up to the top. The engine was restored many years ago before I bought it. The compression readings are: 35, 40, 40, 40. The lever was in the full back position and all 4 wheels were on the ground. I've seen some videos where they just flip the crank over so easy a child could do it! Am I just getting weak from too much office/counter work?


TXGOAT2
Posts: 7721
Joined: Sun Feb 14, 2021 10:08 pm
First Name: Pat
Last Name: McNallen
* REQUIRED* Type and Year of Model Ts owned: 1926-7 roadster
Location: Graham, Texas
Board Member Since: 2021

Re: Slow To Crank

Post by TXGOAT2 » Fri Sep 12, 2025 1:15 pm

Clutch and band adjustments can affect how easily the engine cranks. Thick or dirty oil can make a huge difference in how much the clutch drags. Putting a little oil on the crank bearing can help. Use a light oil as Ford recommended. (5W20 or 10W30). It might be revealing to remove all 4 spark plugs, ground the plug wires, and then see if the engine spins fairly easily with the plugs out. It should. Chilly weather will make the engine harder to crank and will increase clutch drag. Using correct oil will minimize that. Some clutch drag is unavoidable, but it should not be a serious problem except in very cold weather. In really cold weather, a 0W20 oil will give good service in a Model T.


speedytinc
Posts: 4871
Joined: Fri Feb 12, 2021 12:24 pm
First Name: john
Last Name: karvaly
* REQUIRED* Type and Year of Model Ts owned: 14/15 wide track roadster. 23 touring, 27 roadster pickup, 20ish rajo touring
Location: orange, ca
Board Member Since: 2020

Re: Slow To Crank

Post by speedytinc » Fri Sep 12, 2025 1:18 pm

Dragging clutch. Your compression is low. Should spin real easy.
If leave in gear(brake lever forward) there is generally less drag.
Try starting with one wheel up, in gear. You should notice its easier to crank.


TXGOAT2
Posts: 7721
Joined: Sun Feb 14, 2021 10:08 pm
First Name: Pat
Last Name: McNallen
* REQUIRED* Type and Year of Model Ts owned: 1926-7 roadster
Location: Graham, Texas
Board Member Since: 2021

Re: Slow To Crank

Post by TXGOAT2 » Fri Sep 12, 2025 1:27 pm

Did you drain out all old fuel and replace it with fresh?


Topic author
CatGuy
Posts: 328
Joined: Wed Apr 06, 2022 9:50 am
First Name: Scott
Last Name: Hunt
* REQUIRED* Type and Year of Model Ts owned: '26 Runabout
Location: Pella, Iowa

Re: Slow To Crank

Post by CatGuy » Fri Sep 12, 2025 3:53 pm

TXGOAT2 wrote:
Fri Sep 12, 2025 1:27 pm
Did you drain out all old fuel and replace it with fresh?
No, I didn't yet. I need to do that.


Altair
Posts: 369
Joined: Thu Jan 17, 2019 11:52 am
First Name: David
Last Name: Menzies
* REQUIRED* Type and Year of Model Ts owned: 1926 Touring and 1915 Touring both Canadian models
Location: British Columbia
Board Member Since: 2012

Re: Slow To Crank

Post by Altair » Sat Sep 13, 2025 10:49 am

Some of the clutch discs can stick together only running it will fix it. My T sat for a short time and I had to tow it for 1/2 a mile with the clutch disengaged to free it up. With the engine running and the clutch disengaged it took that long to free it up. I now park it with the clutch disengaged using a stick of wood between the seat frame and the clutch pedal. There was a Rolls Royce model that came with a stick on the floor and most people did not know what it was for, it was to keep the clutch disengaged while parked to avoid the issue of a sticky clutch.
You can jack up a rear wheel get it running disengage the clutch and gently apply the rear brakes to free it up.


Scott_Conger
Posts: 6566
Joined: Sun Jan 06, 2019 11:18 am
First Name: Scott
Last Name: Conger
* REQUIRED* Type and Year of Model Ts owned: 1919
Location: not near anywhere, WY
Board Member Since: 2005

Re: Slow To Crank

Post by Scott_Conger » Sat Sep 13, 2025 10:58 am

FORD developed a revolutionary device which held the car in neutral and simultaneously set the parking brake to keep the car from rolling away.

Shortly after, the manufacturer of clutch pedal parking sticks went bankrupt.
Scott Conger

Tyranny under the guise of law is still Tyranny

NH Full Flow Float Valves™
Obsolete carburetor parts manufactured


TXGOAT2
Posts: 7721
Joined: Sun Feb 14, 2021 10:08 pm
First Name: Pat
Last Name: McNallen
* REQUIRED* Type and Year of Model Ts owned: 1926-7 roadster
Location: Graham, Texas
Board Member Since: 2021

!

Post by TXGOAT2 » Sat Sep 13, 2025 2:28 pm

Yet another example of that curmudgeonly robber baron auto maker, Henry Ford, ordering changes aimed at gittin' the liddleman!


TXGOAT2
Posts: 7721
Joined: Sun Feb 14, 2021 10:08 pm
First Name: Pat
Last Name: McNallen
* REQUIRED* Type and Year of Model Ts owned: 1926-7 roadster
Location: Graham, Texas
Board Member Since: 2021

Re: Slow To Crank

Post by TXGOAT2 » Sat Sep 13, 2025 2:30 pm

"Some of the clutch discs can stick together only running it will fix it. My T sat for a short time..."

What are you using for motor oil? Have you removed the access plate on the oil pan to check for heavy sludge?

Post Reply Previous topicNext topic