Low compression.

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John Warren
Posts: 1070
Joined: Sun Jan 06, 2019 12:18 pm
First Name: John
Last Name: Warren
* REQUIRED* Type and Year of Model Ts owned: 14 Roadster, 25 Pickup , 26 Canadian Touring , and a 24-28 TA race car
Location: Henderson, Nevada

Low compression.

Post by John Warren » Sun Apr 12, 2020 4:43 pm

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I pulled the head off on my 26 because of low compression. I was thinking that I also had a head gasket problem like Steve. It was ok, so looking at rings and valves. I turned the engine over to center all of the pistons then put a cap full , approximately 3 tablespoons, of diesel into each cylinder and waited. At 15 minutes #3 cylinder was empty. Three hours and the others still have fluid in them. I’ll pull that one and see what’s going on.
24-28 TA race car, 26 Canadian touring, 25 Roadster pickup, 14 Roadster, and 11AB Maxwell runabout
Keep it simple and keep a good junk pile if you want to invent something :P

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TWrenn
Posts: 3743
Joined: Sun Jan 06, 2019 10:53 am
First Name: Tim
Last Name: Wrenn
* REQUIRED* Type and Year of Model Ts owned: '13 Touring, '26 "Overlap" Fordor
Location: Ohio
Board Member Since: 2019

Re: Low compression.

Post by TWrenn » Sun Apr 12, 2020 8:07 pm

Well I'm no expert mechanic by any means, but looks like a ring job's in order. And also an oil change!!


Joe Bell
Posts: 1174
Joined: Thu Feb 21, 2019 1:20 pm
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* REQUIRED* Type and Year of Model Ts owned: 24 Fordor
Location: Tiffin Ohio

Re: Low compression.

Post by Joe Bell » Sun Apr 12, 2020 9:21 pm

Cylinder rings are always rotating, it is possible on that cylinder they are aligned, pull the piston and see? You are down this far why not rering it while you are there.


Joe Bell
Posts: 1174
Joined: Thu Feb 21, 2019 1:20 pm
First Name: Joe
Last Name: Bell
* REQUIRED* Type and Year of Model Ts owned: 24 Fordor
Location: Tiffin Ohio

Re: Low compression.

Post by Joe Bell » Sun Apr 12, 2020 9:23 pm

Also since it is a 26-7 block take a close look at exhaust valve are going into the cylinder, 75% of those blocks have crack issues there. Hope this helps.

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