Engine noise

Horvik

Member
Hey;

A few weeks ago when I started my D-17 gas I had a loud rapping in it that lasted 5-10 seconds and then went away. Oil pressure seems okay. I thought a rod or something was bad. Now, I don't seem to hear it. So I put a mechanics stethascope in all areas of the block and hear what is to me, normal mechanical sounds.

So what do you guys think is the deal with this? I know that these fine older tractors made more noise with the solids in it, but any ideas?

Thanks a bunch
 
You might check the exhaust manifold and gasket. My Oliver 1650 started sounding like a rod was knocking on startup. It went away after a short time and didn't come back until a cold start up. I used that tractor mainly as a planting tractor at the time. I was using it to fit ground pulling a disc and packer with no knock. I decided to put a spring tooth behind it and it started to knock. Unhook the spring tooth drag and the I couldn't get it to knock. Hooked the drag back on and the knock came back. The mechanic came out and hung onto the side of the tractor to listen. Said he couldn't find where it was coming from and it would need to be brought in and checked. Put a new tire on one of the 1850's and parked the 1650. I never took it in or got into it myself but still used it for light duty. Then it started to make the noise with light duty. When it started with just light duty I could detect the noise seemed higher on the engine from the seat. I parked the tractor for a couple years and started it up and could see exhaust from under the hood. A hole you could not feel without the manifold off but the hole had gotten large enough to find. A new manifold and no knock of any kind. Probly not your problem but gave me a chance to tell a story.
 
Hey DickL,

I appreciate the detailed help and story you mentioned.
As this is a 63 Allis and the other owner parked it outside, makes sense to me what you said.

Got a question . In your view how did that hole make the problem happen some times, and then not others? Mechanics is sure not easy and this here is just one example of it.

By the way, do you recommend running Diesel engine oil in this gas powered 226 as another member suggested, this as compared to straight 30 W standard?

For what it's worth, ran a mechanics stethascope all up , down and around the block, but heard nothing loud. Just seems normal clearance sounds to me.

Thank You kindly for the help. Will see this gets checked as well.
 
I just guessed that it was where it was located and it was small to start with. Never made sense to me but it was what I found. I run diesel oil in all my engines now even the lawn mowers. The last jugs of diesel oil I bought it said below where it said diesel oil in large letters it said for gas engines in smaller letters below.
 
Hi DickL;

Wanted to let you know that I changed over to Fram PH 8 and Rotella 10 W 30.She smo9ked some at first, but then settled down and seem to run better. Thank you for the tip!

Also, what spark plugs would you recommend for this 226 Gas wiih some wear on her?

All the best
Horvik
 
Say, may i make a suggestion on oil filters. I would use a Allis or a Baldwin filter, The Fram is just the bottom of the barrel as far as quality.
 

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Back
Top