The Ford Barn

jamar1905 · 12-01-2013, 03:57 PM

engine will not make a complete revolution when turning by hand it goes to the bottom and stops

700rpm · 12-01-2013, 04:00 PM

We need more info. Bottom of what? Is this a new rebuild? Have you had the starter off recently? Is the car running? And many more questions...

jamar1905 · 12-01-2013, 04:40 PM

no this is not a rebuild.......... but just out of the blue...the engine will not make a full revolution............and it was before.......it turned over several times with the starter........then I left it set for a couple weeks and then I tried to roll the engine over by hand and it goes to a certain point and will not go any further...........thanks for your reply.......james

Patrick L. · 12-01-2013, 04:44 PM

Have you tried removing the sparklers to see if there is water in a cylinder or some other such thing ?

jamar1905 · 12-01-2013, 04:44 PM

also this car has not been started as of yet trying to get everything done so I can put some gas in it and see what happens...... when I got the car the engine rolled over by hand

Tom Wesenberg · 12-01-2013, 06:14 PM

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I'd remove the spark plugs right away and see if it will crank over by hand. If it will then spin it over with the starter to see if any water comes out. You need to get the water out ASAP and get some oil on the cylinders to prevent rust.

Where do you live? Maybe it's ice in there?

James Rogers · 12-01-2013, 07:34 PM

Sounds like a hydro-lock. Pull the plugs and see if there is water in one of the cylinders.

Purdy Swoft · 12-01-2013, 08:29 PM

Soumds like a valve stuck closed. If this is the case, the engine would turn until the cam lobe reached the lifter on the valve that is stuck closed and then would stop.The engine could then be turned the other direction until the cam lobe backed up to the lifter on the valve that is stuck and stop again. With the plugs out, you should be able to back the engine up by hand with the fan belt. It could be most anything. With the info that is given, this is my best guess. Stuck valves are common when engines sit up for long periods.

jamar1905 · 12-01-2013, 08:40 PM

yes this seems exactly what is happening

jamar1905 · 12-01-2013, 08:44 PM

now how do I unstick the valve.........james

Purdy Swoft · 12-01-2013, 08:52 PM

If this is the case, the next step will be to remove the valve cover an d try and determine which valve is stuck. It may also be necessary to remove the manifold assy and spray penetrant on the valve stem that is stuck, through the port. If you have a valve spring comprsser tool, you can compress the valve spring and carefully clamp the valve stem with vise grips. With good penetrant and a little working the valve back and forth the valve should unstick. I have used this method.

Tom Wesenberg · 12-01-2013, 08:55 PM

I also thought about a stuck valve until you mentioned the engine turned over fine a couple weeks ago. A valve shouldn't stick that quickly. I bought a Renault Douphine at an auction about 20 years ago, and it has a stuck valve. Soak the stuck valve with Kroil and wait and tap. I worked on a Wisconsin V4 on a swather with a stuck valve. They were famous for sticking valves over the winter. I found out you don't force a stuck valve on the Wisconsin V4 or you'll snap the cam.

Purdy Swoft · 12-01-2013, 09:13 PM

My old Massey Harris with a Continental engine would get stuck valves in a short while. I've had model A engines get stuck valves pretty quick after running ethanol gas. If a valve is stuck closed, you don't tap on the head of the valve, you've got to work from the bottom . Some tap on the head of a stuck open valve through a plug hole. You may also have some stuck open valves but a stuck open valve won't stop the engine from turning over. Model A cams are forged and there is no danger of breaking the cam.

BILL WILLIAMSON · 12-02-2013, 01:26 AM

On severe stuck valves, Claude heats the stem, through the port with a propane torch & quenches them with penetrating oil spray. It may take several tries. Bill W.

Tom Wesenberg · 12-02-2013, 08:46 AM

Yes, I didn't think about the ethanol crap gas sticking the valves, but have had it happen to me also. I used some stale crap gas in my motorbike and two days later the intake valve was stuck open so hard that I had to use Kroil and some pretty hard hits with a hammer to get it back down, and this happened just 2 days after running the bike.

BILL WILLIAMSON · 12-02-2013, 09:23 AM

Quote:

Originally Posted by Tom Wesenberg

Yes, I didn't think about the ethanol crap gas sticking the valves, but have had it happen to me also. I used some stale crap gas in my motorbike and two days later the intake valve was stuck open so hard that I had to use Kroil and some pretty hard hits with a hammer to get it back down, and this happened just 2 days after running the bike.

Tom,
Tom,
Years ago at the dealer, the owner of a Datsun B210, with 12,000 miles, changed all his fluids to Amsoil Products & added 2 (TWO!) cans of gas additive! Next morning, clack, clang, & NO START!
Apparently it liquified the varnish in the guides & when it cooled, it hardened & stuck & BENT a bunch of valves!! (NO! it wasn't covered by WARRANTY)
Bill W.

jamar1905 · 12-02-2013, 11:56 PM

Thanks to all of guys for your help tomorrow I will take the valve cover off and see what it looks like.....I will post my findings...............thanks James

James Rogers · 12-03-2013, 07:26 AM

I would remove the plugs first. No gasket and it would be easier.

12-01-2013, 03:57 PM	#1
jamar1905 Junior Member Join Date: Sep 2012 Posts: 11	engine engine will not make a complete revolution when turning by hand it goes to the bottom and stops

12-01-2013, 04:00 PM	#2
700rpm Senior Member Join Date: May 2010 Location: Portland, Oregon Posts: 5,906	Re: engine We need more info. Bottom of what? Is this a new rebuild? Have you had the starter off recently? Is the car running? And many more questions... __________________ Ray Horton, Portland, OR As you go through life, keep your eye on the donut, not the hole.

12-01-2013, 04:40 PM	#3
jamar1905 Junior Member Join Date: Sep 2012 Posts: 11	Re: engine no this is not a rebuild.......... but just out of the blue...the engine will not make a full revolution............and it was before.......it turned over several times with the starter........then I left it set for a couple weeks and then I tried to roll the engine over by hand and it goes to a certain point and will not go any further...........thanks for your reply.......james

12-01-2013, 04:44 PM	#4
Patrick L. Senior Member Join Date: May 2010 Location: Largo Florida Posts: 7,225	Re: engine Have you tried removing the sparklers to see if there is water in a cylinder or some other such thing ?

12-01-2013, 04:44 PM	#5
jamar1905 Junior Member Join Date: Sep 2012 Posts: 11	Re: engine also this car has not been started as of yet trying to get everything done so I can put some gas in it and see what happens...... when I got the car the engine rolled over by hand

12-01-2013, 06:14 PM	#6
Tom Wesenberg Senior Member Join Date: May 2010 Location: Mpls, MN Posts: 27,582	Re: engine Sponsored Links (Register now to hide all advertisements) I'd remove the spark plugs right away and see if it will crank over by hand. If it will then spin it over with the starter to see if any water comes out. You need to get the water out ASAP and get some oil on the cylinders to prevent rust. Where do you live? Maybe it's ice in there? Last edited by Tom Wesenberg; 12-01-2013 at 08:48 PM.

12-01-2013, 07:34 PM	#7
James Rogers Senior Member Join Date: May 2010 Location: Asheville,NC Posts: 3,104	Re: engine Sounds like a hydro-lock. Pull the plugs and see if there is water in one of the cylinders. __________________ http://www.model-a-ford-4bangers.com/

12-01-2013, 08:29 PM	#8
Purdy Swoft Senior Member Join Date: May 2010 Location: Alabama Posts: 8,099	Re: engine Soumds like a valve stuck closed. If this is the case, the engine would turn until the cam lobe reached the lifter on the valve that is stuck closed and then would stop.The engine could then be turned the other direction until the cam lobe backed up to the lifter on the valve that is stuck and stop again. With the plugs out, you should be able to back the engine up by hand with the fan belt. It could be most anything. With the info that is given, this is my best guess. Stuck valves are common when engines sit up for long periods. Last edited by Purdy Swoft; 12-01-2013 at 08:34 PM.

12-01-2013, 08:40 PM	#9
jamar1905 Junior Member Join Date: Sep 2012 Posts: 11	Re: engine yes this seems exactly what is happening

12-01-2013, 08:44 PM	#10
jamar1905 Junior Member Join Date: Sep 2012 Posts: 11	Re: engine now how do I unstick the valve.........james

12-01-2013, 08:52 PM	#11
Purdy Swoft Senior Member Join Date: May 2010 Location: Alabama Posts: 8,099	Re: engine If this is the case, the next step will be to remove the valve cover an d try and determine which valve is stuck. It may also be necessary to remove the manifold assy and spray penetrant on the valve stem that is stuck, through the port. If you have a valve spring comprsser tool, you can compress the valve spring and carefully clamp the valve stem with vise grips. With good penetrant and a little working the valve back and forth the valve should unstick. I have used this method.

12-01-2013, 08:55 PM	#12
Tom Wesenberg Senior Member Join Date: May 2010 Location: Mpls, MN Posts: 27,582	Re: engine I also thought about a stuck valve until you mentioned the engine turned over fine a couple weeks ago. A valve shouldn't stick that quickly. I bought a Renault Douphine at an auction about 20 years ago, and it has a stuck valve. Soak the stuck valve with Kroil and wait and tap. I worked on a Wisconsin V4 on a swather with a stuck valve. They were famous for sticking valves over the winter. I found out you don't force a stuck valve on the Wisconsin V4 or you'll snap the cam.

12-01-2013, 09:13 PM	#13
Purdy Swoft Senior Member Join Date: May 2010 Location: Alabama Posts: 8,099	Re: engine My old Massey Harris with a Continental engine would get stuck valves in a short while. I've had model A engines get stuck valves pretty quick after running ethanol gas. If a valve is stuck closed, you don't tap on the head of the valve, you've got to work from the bottom . Some tap on the head of a stuck open valve through a plug hole. You may also have some stuck open valves but a stuck open valve won't stop the engine from turning over. Model A cams are forged and there is no danger of breaking the cam.

12-02-2013, 01:26 AM	#14
BILL WILLIAMSON Senior Member Join Date: Dec 2010 Location: FRESNO, CA Posts: 12,560	Re: engine On severe stuck valves, Claude heats the stem, through the port with a propane torch & quenches them with penetrating oil spray. It may take several tries. Bill W. __________________ "THE ASSISTANT GURU OF STUFF"

12-02-2013, 08:46 AM	#15
Tom Wesenberg Senior Member Join Date: May 2010 Location: Mpls, MN Posts: 27,582	Re: engine Yes, I didn't think about the ethanol crap gas sticking the valves, but have had it happen to me also. I used some stale crap gas in my motorbike and two days later the intake valve was stuck open so hard that I had to use Kroil and some pretty hard hits with a hammer to get it back down, and this happened just 2 days after running the bike.

12-02-2013, 11:56 PM	#17
jamar1905 Junior Member Join Date: Sep 2012 Posts: 11	Re: engine Thanks to all of guys for your help tomorrow I will take the valve cover off and see what it looks like.....I will post my findings...............thanks James

12-03-2013, 07:26 AM	#18
James Rogers Senior Member Join Date: May 2010 Location: Asheville,NC Posts: 3,104	Re: engine I would remove the plugs first. No gasket and it would be easier. __________________ http://www.model-a-ford-4bangers.com/