Farm Equipment - D17 Starting/Running Issue

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D17 Starting/Running Issue

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=175272
Printed Date: 07 May 2024 at 11:13am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: D17 Starting/Running Issue

Posted By: Scottb
Subject: D17 Starting/Running Issue
Date Posted: 18 Oct 2020 at 7:57pm

Hi guys,

I'm new to this forum. I have a '58 D17 with a Zenith 161J7 Carburetor. Tractor has been sitting 8+ years with fuel in take and carb. Cleaned tank, replaced fuel line and filter. Cleaned carb. Having issues with it starting and staying running. It will crank over with fuel in air intake, but as soon as it burns that it dies. It will turn over for a second without fuel in air intake after warm. Any help is much appreciated. I'm stuck.

Thanks

Replies:

Posted By: MACK
Date Posted: 18 Oct 2020 at 10:56pm

Is there gas in bowl of carburetor ? MACK

Posted By: Scottb
Date Posted: 19 Oct 2020 at 6:26am

There is. Rushes out at first then slows to a almost a trickle.

Posted By: CTuckerNWIL
Date Posted: 19 Oct 2020 at 6:34am

If you can't get a good solid stream from the carb drain plug for a good 2 minutes, you have a fuel restriction. Either the needle and seat in the carb, the gas inlet or line itself, or the sediment bowl inlet or tank has a problem.
Work your way back from the carb to the tank and fix the problem.
I have found all kinds of things in a gas tank, that will plug, or partially plug the flow of gas. Asian lady bugs in the neighbors 770 Oliver plugged his up and it only takes one to do it.

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http://www.ae-ta.com" rel="nofollow - http://www.ae-ta.com
Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF

Posted By: KYrod
Date Posted: 19 Oct 2020 at 8:04am

Are you observing this flow before or "after" the carb?

Easy things first....

Posted By: Ted J
Date Posted: 19 Oct 2020 at 4:31pm

The flow is from the bottom of the carb. Some carbs don't have a drain plug, but most do. Use a coffee can or something similar and take that plug out of the bottom of the carb and HOPE that the gas runs steadily for those 2 minutes. IF it does, then the problem is the carb. I would think it would be the seat and valve because of sitting so long. Good luck!!

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"Allis-Express"
19?? WC / 1941 C / 1952 CA / 1956 WD45 / 1957 WD45 / 1958 D-17

Posted By: Scottb
Date Posted: 19 Oct 2020 at 5:49pm

Thanks guys. After further investigation I believe the carburetor is losing vacuum. I have already replaced all gaskets. I think the carb housing is warn out especially after sitting 8 some years with gas in it. I live in high elevation so it gets cold as well. Does anyone know of an aftermarket carburetor that I can replace the Zenith 229342 (161j7) with? Also this tractor is for sale if anyone is interested. I'm helping a neighbor fix it to sell it.

Posted By: Scottb
Date Posted: 19 Oct 2020 at 5:53pm

Also the fuel flows steadily out of the carb. It gushes out at first then a lighter stream flows out of the drain plug of bowl. The fuel line off of the carb has a fast full stream of gas running out of it. I have acid washed the fuel tank, cleaned sediment bowl, replaced fuel line and inline filter as well.

Posted By: DaveKamp
Date Posted: 21 Oct 2020 at 10:31pm

A carbeurator may have a circumstance where a vacuum leak is occurring, but it is just as likely that manifold gasket surface erosion or a crack between the warm and cold side of the manifold has a crack.

These tractors came with both Zenith and Marvel-Schebler carbeurators, and both were very good. they don't 'wear out' in such a way that they're a 'disposable' or 'consumable' part. dismantle, clean out, install wear bushings in the throttle plate shaft holes, slip in a new shaft, reassemble the whole thing, and set it properly, rather than attempthing to put on a 'replacement'.

And before you dig in too deep, get an insulated wire with alligator clips on each end. Connect one to the battery, and the other to the ignition coil's primary, then try to start it.

if it starts and runs fine THEN... remove and replace the keyswitch on the dash...

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Ten Amendments, Ten Commandments, and one Golden Rule solve most every problem. Citrus hand-cleaner with Pumice does the rest.

Posted By: Stan R
Date Posted: 22 Oct 2020 at 5:35am

After you address any vacuum leaks, flow issues, etc., you may need to lean it out more, being at an altitude of close to 9,000 ft (??).