McCormick W4 won't run

DJ54 · Oct 14, 2012

To answer one of your earlier questions, yes, that hole is supposed to be in that tube.

Okie Dokie on the cleanup. Maybe a little ATF to free and clean up the sticky stuff.

Been a fan of MMO since the introduction of lead free gas, in all of my older small engines. It eliminated sticking exhaust valves immediately..!! And an occasional additive to the crankcase, on certain ones. I still ad a dash when refueling my older tractors.

I used to use Rislone years back also, as an oil additive.

DanB53 · Oct 14, 2012

MikeR gave me a hand to take the manifold off today. I looked at the valve stems and they are COATED in carbon. I think I'll take the head off and give everything a once over and good cleaning before I do anything else. I'll post a pic of one of the valve stems soon.

MIKE R · Oct 14, 2012

DanB53 said:
MikeR gave me a hand to take the manifold off today. I looked at the valve stems and they are COATED in carbon. I think I'll take the head off and give everything a once over and good cleaning before I do anything else. I'll post a pic of one of the valve stems soon.

While you have the head off and the engine apart you should also deglaze the cylinder walls.

DanB53 · Oct 14, 2012

MIKE R said:
While you have the head off and the engine apart you should also deglaze the cylinder walls.

Ya I will. Depending what the crank shaft looks like, I may decide to send it to a machine shop and to put new bottom end bearings into it.

MIKE R · Oct 24, 2012

DanB53 said:
I'll post a pic of one of the valve stems soon.

What no pictures. Did you try to take them there valves out yet.

DanB53 · Oct 24, 2012

Sorry it took me so long to get these uploaded but I've been busy with a lot of different projects lately. Heres the valves and head. No major surprises. Theres definitely some seating issues but no obvious major problems. I'll update you guys again once i get them ground.

MIKE R · Oct 24, 2012

DanB53 said:
No major surprises.

What about the screen from the carb that got up in there, At least it didn't cause and damage.

DanB53 · Oct 24, 2012

MIKE R said:
What about the screen from the carb that got up in there, At least it didn't cause and damage.

I found a flattened piece of metal in the #2 exhaust seat. My guess would be that it is screen that was missing. But your right, there was no noticable damage to the seat.

DanB53 · Oct 26, 2012

farmgurl101 said:
Dan maybe you should just ride my big tractor and come explore a new world with me!

I don't know who you are and no offence ma'am but if your not here to help I'd appreciate you not posting replies

DanB53 · Nov 2, 2012

I've soaked the valves in "Super Clean" for 5 days and brushed them off with a brass brush. The exhausts on #2 and #3 still won't come clean though. I'll just keep soaking them and brushing them until they do. I just wanted to update you guys on my progress.

MIKE R · Nov 2, 2012

Why don't you try a stronger solvent...

DJ54 · Nov 2, 2012

That built up carbon is tough to get off. I've literally scraped them with a file, using it sideways. One of those small cabinet type sandblasters would be great for this.

DanB53 · Nov 2, 2012

MIKE R said:
Why don't you try a stronger solvent...

This is the strongest solvent you can buy in this town. Maybe if it don't work before I head down to New Berry for the parts I'll pick up some Berrymans Solvent. I know that works.

MIKE R · Nov 2, 2012

Wow look at all the fast reply.

This is the strongest solvent you can buy in this town

You said about all the things you had to do so the solvent wouldn't harm you. You could even try with some fine sand paper to clean the carbon off.

DanB53 · Nov 2, 2012

The carbon on the last 2 valves is pretty thick. I don't think sand paper would work. I have a cabinet sandblaster but I don't have a clue what type of abrasive to buy that wouldn't damage the seats.

MIKE R · Nov 2, 2012

I think you have the black beuty sand in it. If you want you can try the sand tumbler, just give me a hollar.

DanB53 · Nov 2, 2012

Ya it is black beauty sand. Do you think that might work? If not what do you think will? I'd rather avoid using a tumbler to avoid chipping the valves.

Soots · Nov 2, 2012

Dan, is buying new valves out of the question?

DanB53 · Nov 2, 2012

It's not out of the question but other than the build up of carbon on two of them, they are fairly decent. I'm trying to keep the restoration as low cost as I can.