Go Back   The Ford Barn > General Discussion > Model A (1928-31)

Sponsored Links (Register now to hide all advertisements)

Reply
 
Thread Tools Display Modes
Old 12-27-2016, 10:05 PM   #1
robgross1930
BANNED
 
Join Date: Dec 2016
Posts: 47
Default Re: The car is finally running good!

Another bit of info I would like to add is one can often tell a lot about the condition of an engine just by listening to the sound the starter makes as it turns the engine over. Yours has an even rhythm or regular repeated pattern of sound. That indicates fairly even compression from one cylinder to the next, which is a good sign. However, yours also sounds like the starter is spinning the engine over a little fast (just a little not much) in my opinion which can indicate lower compression in all cylinders, like a worn engine with a lot miles, as the engine has less compression and is easier to turn over. Plus the fact that you said the engine was warm adds to the accuracy of my opinion. Could still be a good runner though.
robgross1930 is offline   Reply With Quote
Old 12-27-2016, 10:38 PM   #2
Smooth_One
Senior Member
 
Smooth_One's Avatar
 
Join Date: Apr 2016
Location: St Clair, Michigan
Posts: 395
Default Re: The car is finally running good!

Quote:
Originally Posted by robgross1930 View Post
Another bit of info I would like to add is one can often tell a lot about the condition of an engine just by listening to the sound the starter makes as it turns the engine over. Yours has an even rhythm or regular repeated pattern of sound. That indicates fairly even compression from one cylinder to the next, which is a good sign. However, yours also sounds like the starter is spinning the engine over a little fast (just a little not much) in my opinion which can indicate lower compression in all cylinders, like a worn engine with a lot miles, as the engine has less compression and is easier to turn over. Plus the fact that you said the engine was warm adds to the accuracy of my opinion. Could still be a good runner though.
Thanks! One thing I did is put a new ground wire from the frame to engine block and after that it cranked way faster!
Smooth_One is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 12-28-2016, 10:09 AM   #3
robgross1930
BANNED
 
Join Date: Dec 2016
Posts: 47
Default Re: The car is finally running good!

Quote:
Originally Posted by Smooth_One View Post
Thanks! One thing I did is put a new ground wire from the frame to engine block and after that it cranked way faster!
You’re welcome but according to your comment I’m not quite sure that you understand. Even if you had not improved the ground with a new wire, there would still be an audible difference in the rhythm of the sound made by the starter if there was a significant problem with any of the cylinders. The only difference is the overall speed would be slower. As it is now, you have probably established the best ground possible but the overall speed is still slightly faster, in my opinion, than what it would be if the compression were improved as is evident with a Model A engine with less wear on the rings and cylinder walls.
robgross1930 is offline   Reply With Quote
Old 12-27-2016, 10:45 PM   #4
Smooth_One
Senior Member
 
Smooth_One's Avatar
 
Join Date: Apr 2016
Location: St Clair, Michigan
Posts: 395
Default Re: The car is finally running good!

Quote:
Originally Posted by Mitch//pa View Post
Rob thats great real world right on the money info u posted. A skip in the crank rhythm u sure dont want. A trained person can pretty much thoroughly evaluate a car by hearing driving and feeling without taking any tools out.
I did adjust the carb tonight by ear. Ran much better after!
Smooth_One is offline   Reply With Quote
Old 12-28-2016, 01:58 AM   #5
Synchro909
Senior Member
 
Synchro909's Avatar
 
Join Date: Jun 2014
Location: Melbourne, Australia
Posts: 8,043
Default Re: The car is finally running good!

Quote:
Originally Posted by Mitch//pa View Post
Rob thats great real world right on the money info u posted. A skip in the crank rhythm u sure dont want. A trained person can pretty much thoroughly evaluate a car by hearing driving and feeling without taking any tools out.
Agree 100%, especially with these old cars. Listening to the whine of vintage machinery is part of the attraction of these cars IMO - I'd rather listen to that than a symphony orchestra.
__________________
I sometimes wonder what happened to the people who asked me for directions.
Even at my age, I still like to look at a young, attractive woman but I can't really remember why.
Synchro909 is offline   Reply With Quote
Old 12-28-2016, 07:55 AM   #6
Mitch//pa
BANNED
 
Join Date: May 2010
Location: Bucks County, PA
Posts: 11,454
Default Re: The car is finally running good!

Sponsored Links (Register now to hide all advertisements)
Do you have any pictures of the car that u can post?
Mitch//pa is offline   Reply With Quote
Reply


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Sponsored Links (Register now to hide all advertisements)


All times are GMT -5. The time now is 09:22 PM.