running rough when hot


IHC in the early to mid-fifties.

Golden Jubilee
Golden Jubilee

Posts: 3367

Joined: Thu Nov 29, 2012 9:28 pm

Location: Lyman, IA

Post Fri Jul 13, 2018 8:03 am

Re: running rough when hot

I'm not trying to be mean, but...
To a seasoned mechanic, a "rich stumble, a lean stumble and an ignition stumble" all are easly told apart by how the act. All fall under the heading of rough running. It is hard to impossible to explain the differences over the internet. Each can have many causes or it can be a combination of more than one.
Rough running is just to vague to give meaningful help.

Golden Jubilee
Golden Jubilee

Posts: 6353

Joined: Thu Dec 27, 2012 12:45 pm

Location: Canada's left Coast

Post Fri Jul 13, 2018 11:22 am

Re: running rough when hot

Does anyone remember Ethan?
I would rather have tools I do not need than to need tools I do not have
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Yard Art
Yard Art

Posts: 78

Joined: Mon Feb 09, 2015 7:10 pm

Location: Eldon, Missouri USA

Post Fri Jul 13, 2018 6:02 pm

Re: running rough when hot

Doogybot wrote:I never run things tight, im an electrician by trade and this is one of the few things my experience actually helped with. should I go directly to battery off of the head or just to firewall? I guess to battery would be a better ground. if the ground doesn't solve the issue which I doubt it will I will check my vacuum and advance first then for fuel then go back to timing. im pretty sure I got it pretty close. but as previously mentioned I have no idea really what I was doing. I followed previous forum posts best I could, but ive never done this before and had no one to watch me if I screwed up.
what would I be seeing as far as vacuum pressures? I don't have a way to check this or even know how but I can buy the proper tool if necessary.
I got a new carburetor and have adjusted just the idle. its a Daytona universal 1901. again I don't know what im doing so keep it simple if I missed something. the company I bought it from fired it up before they shipped to Canada so I didn't think I would have to adjust anything.


Do you have the original carburetor you could bolt on for testing?

Jon.
Good carburetion is fuelish hot air!

If you truly believe one size fits all, try walking a mile in your spouse's shoes!

Owner, The Carburetor Shop in Missouri

Yard Art
Yard Art

Posts: 53

Joined: Sun Apr 10, 2016 9:34 am

Post Sat Jul 14, 2018 3:50 pm

Re: running rough when hot

My old carb was cracked in half at the base and the one on my parts truck is siezed.

Yard Art
Yard Art

Posts: 53

Joined: Sun Apr 10, 2016 9:34 am

Post Sun Jul 15, 2018 9:12 pm

Re: running rough when hot

cornbinder89 wrote:I'm not trying to be mean, but...
To a seasoned mechanic, a "rich stumble, a lean stumble and an ignition stumble" all are easly told apart by how the act. All fall under the heading of rough running. It is hard to impossible to explain the differences over the internet. Each can have many causes or it can be a combination of more than one.
Rough running is just to vague to give meaningful help.



I'm am anything but a seasoned mechanic. I wouldn't know the tells.
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