The Ford Barn

Rustynutz52 · 05-11-2018, 05:42 AM

Got the 37 started last night finally. Changed out distributor and plug wires. Car will start right up with a shot of ether. And will run on its own but i have a bad knocking noise that sounds like it coming from the mid area Is it possible i have a stuck valve will this make a knocking symptom? What would you guys do next. It,will sit and idle but this knock worries me. Almost sounds like a bolt hitting something.

Thanks Mike

Terry,OH · 05-11-2018, 06:05 AM

rotate the engine by hand to see if it has a hard spot. If not do a compression check. If that is good put a vacuum gauge on it.

Kurt in NJ · 05-11-2018, 07:31 AM

short out plugs and see it it changes the knock----this could locate the problem cylinder
it could just be carbon trapped between the head and piston---or other debris
does it change between hot and cold ---

Greg58 · 05-11-2018, 08:31 AM

My 50 had a stuck intake valve when I got it, mine popped back through the carb on compression stroke, after I got it freed up it still tapped due to the damage to the lifter top. I replaced the lifter , valve and guide and all is well.

tubman · 05-11-2018, 09:18 AM

The first thing thing I would ask here is "What kind of oil pressure did you have?".

Ford Freak · 05-11-2018, 11:59 AM

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Quote:

Originally Posted by tubman

The first thing thing I would ask here is "What kind of oil pressure did you have?".

Ditto ...............F F

Rustynutz52 · 05-11-2018, 04:34 PM

Started it up when i got home tonght. Knocking seemed less then last night. After about 30 sec it went away and car seems to be running smooth. Showing no oil pressure on sender. Smoking a bit. And smells rich. I wonder if I had a stuck valve. I am thinking i might give it a marvel mmo treatment. It has not been run in about 15 years and has been in a humid environment. Any thoughts on oil pressure could it just be the gauge??? Think I will change the oil tomorrow.

flatford8 · 05-11-2018, 04:43 PM

Put a mechanical gauge in place of the electric sender on the back of the block. Remove the spark plugs and crank it..... see what you get for pressure. If zero, I wouldn’t run it till you find the problem and correct it ........Mark

alanwoodieman · 05-11-2018, 04:46 PM

immediately put a remote mechanical oil pressure gauge on the engine, you will have to remove the electrical sender (hard to do with out special tool) or the plug located adjacent to it, remove the spark plugs and turn engine over and see what you have on the mechanical gauge. most of the time cranking oil pressure for these engines is in the 20/25 lb range

Ggmac · 05-11-2018, 05:21 PM

If I cared for the motor I would not be running it for 30 min to see if the noise went away and with no oil pressure ! Stick a mechanical gauge on it .

Greg58 · 05-11-2018, 07:33 PM

As said make sure you have oil pressure before doing anything else, it may be just the gauge or sending unit because it probably wouldn’t be smoking if it wasn’t oiling I don’t think.

Tinker · 05-11-2018, 07:42 PM

MMO would be to just fine tune/lube the upper part of the engine.

No oil pressure and a hard knock is bad.

There is a thought I've been taught by a very smart guy (not car related).
Think, Think, DO. or... Do, Do, THINK. super simple.

Both have there advantages. In this case the earlier might be apt.

05-11-2018, 05:42 AM	#1
Rustynutz52 Member Join Date: Apr 2013 Location: Lake Wylie South Carolina Posts: 76	Update on 1937 Got it started but its knocking Got the 37 started last night finally. Changed out distributor and plug wires. Car will start right up with a shot of ether. And will run on its own but i have a bad knocking noise that sounds like it coming from the mid area Is it possible i have a stuck valve will this make a knocking symptom? What would you guys do next. It,will sit and idle but this knock worries me. Almost sounds like a bolt hitting something. Thanks Mike

05-11-2018, 06:05 AM	#2
Terry,OH Senior Member Join Date: May 2010 Posts: 4,750	Re: Update on 1937 Got it started but its knocking rotate the engine by hand to see if it has a hard spot. If not do a compression check. If that is good put a vacuum gauge on it.

05-11-2018, 07:31 AM	#3
Kurt in NJ Senior Member Join Date: May 2010 Location: on the Littlefield Posts: 6,158	Re: Update on 1937 Got it started but its knocking short out plugs and see it it changes the knock----this could locate the problem cylinder it could just be carbon trapped between the head and piston---or other debris does it change between hot and cold ---

05-11-2018, 08:31 AM	#4
Greg58 Senior Member Join Date: Jul 2016 Location: Newnan Georgia Posts: 206	Re: Update on 1937 Got it started but its knocking My 50 had a stuck intake valve when I got it, mine popped back through the carb on compression stroke, after I got it freed up it still tapped due to the damage to the lifter top. I replaced the lifter , valve and guide and all is well. __________________ Greg

05-11-2018, 09:18 AM	#5
tubman Senior Member Join Date: Dec 2013 Location: Minnesota, Florida Keys Posts: 10,312	Re: Update on 1937 Got it started but its knocking The first thing thing I would ask here is "What kind of oil pressure did you have?".

05-11-2018, 04:34 PM	#7
Rustynutz52 Member Join Date: Apr 2013 Location: Lake Wylie South Carolina Posts: 76	Re: Update on 1937 Got it started but its knocking Started it up when i got home tonght. Knocking seemed less then last night. After about 30 sec it went away and car seems to be running smooth. Showing no oil pressure on sender. Smoking a bit. And smells rich. I wonder if I had a stuck valve. I am thinking i might give it a marvel mmo treatment. It has not been run in about 15 years and has been in a humid environment. Any thoughts on oil pressure could it just be the gauge??? Think I will change the oil tomorrow.

05-11-2018, 04:43 PM	#8
flatford8 Senior Member Join Date: Jan 2012 Location: Lyman,ME. Posts: 2,626	Re: Update on 1937 Got it started but its knocking Put a mechanical gauge in place of the electric sender on the back of the block. Remove the spark plugs and crank it..... see what you get for pressure. If zero, I wouldn’t run it till you find the problem and correct it ........Mark __________________ I'm thinkin' about crankin' My ragged ol' truck up and haulin' myself into town. Billy Joe Shaver

05-11-2018, 04:46 PM	#9
alanwoodieman Senior Member Join Date: May 2010 Location: upstate SC Posts: 2,963	Re: Update on 1937 Got it started but its knocking immediately put a remote mechanical oil pressure gauge on the engine, you will have to remove the electrical sender (hard to do with out special tool) or the plug located adjacent to it, remove the spark plugs and turn engine over and see what you have on the mechanical gauge. most of the time cranking oil pressure for these engines is in the 20/25 lb range

05-11-2018, 05:21 PM	#10
Ggmac Senior Member Join Date: Jul 2016 Location: Lake worth Florida Posts: 1,096	Re: Update on 1937 Got it started but its knocking If I cared for the motor I would not be running it for 30 min to see if the noise went away and with no oil pressure ! Stick a mechanical gauge on it .

05-11-2018, 07:33 PM	#11
Greg58 Senior Member Join Date: Jul 2016 Location: Newnan Georgia Posts: 206	Re: Update on 1937 Got it started but its knocking As said make sure you have oil pressure before doing anything else, it may be just the gauge or sending unit because it probably wouldn’t be smoking if it wasn’t oiling I don’t think. __________________ Greg

05-11-2018, 07:42 PM	#12
Tinker Senior Member Join Date: May 2010 Location: MN Posts: 7,053	Re: Update on 1937 Got it started but its knocking MMO would be to just fine tune/lube the upper part of the engine. No oil pressure and a hard knock is bad. There is a thought I've been taught by a very smart guy (not car related). Think, Think, DO. or... Do, Do, THINK. super simple. Both have there advantages. In this case the earlier might be apt.