Jump to content

Unofficial Home of Old Simplicity & Allis-Chalmers Garden Tractors

Sign in to follow this  
a_sannine

Kt17 seires two problem

Recommended Posts

a_sannine

Kt17 series 2 on my 7117 giving me troubles , engine will start for like 10 seconds , back firing , puffing black smoke , cutting off ,shaking then dies.

Here what I did

Carb total rebuilt

tune up , new points /condenser /spark plugs / fresh gas .

I tested the fuel pump .

I did every thing I could think off with no luck , I am leaning toward bad governorid="red"> now .

Good compression.

Good spark .

Thoughts please ?

Share this post


Link to post
Share on other sites
Brettw

I would doubt the governor being the culprit. It should run well with a bad governor, it just will be wild as far as steady rpm's. Perhaps a sheared flywheel key? Sound kind of like the timing is off or perhaps a bad coil.

Share this post


Link to post
Share on other sites
powerking_one

You may want to consider the ignition coil failing in its early stages/going intermittent. They are a somewhat known failure item on the KT series engines. They are not a cheap item to buy however. Others have substituted a Harley Davidson points coil or even a Japanese 2-cyclinder motorcycle coil. If you have 2 Delco Remy single tower coils wired in parallel, that might help pinpoint down/eliminate the problem.

Tom (PK)

Share this post


Link to post
Share on other sites
a_sannine

Just got back from the garage , it is not the coil , this engine driving me nuts , Ill check the timing with the light as u suggested Ken , but I don't think it is the issue as I watched when points open the mark is centered in the hole on the right.

I am gonna pull heads out tomorrow , I hope it is not a valves problem .

Share this post


Link to post
Share on other sites
MikeES

It sounds like timing, did you have the condition before the new points and condenser? I have had new points/condensers that have given me fits.

Valve sticking would also act like bad timing. You can check valve closure in the valve spring boxes without pulling the heads.

Coil failure on the KTs are not uncommon, I have heard of partial failures that makes the engine do all sorts of crazy things. I have been lucky my KT coils have just failed, and then easy to diagnose.

BTW, you can remove the heads without completely removing the engine. Remove mounting bolts and then lift engine high enough to get at the screws that hold the head tin/shrouds.

Share this post


Link to post
Share on other sites
PhanDad

If the 7117 you're having problems with is a mfg#1691717, check safety relay. It can be seen in this wiring diagram:

16GTHL_Wire7117.jpg

IMO, this relay was the first generation of the safety interlock module used in later model tractors. Temporarily hook a +12v lead to the "+" side of the coil so spark isn't lost if something's wrong with the wiring/components that keep the safety relay closed.If the direct wire solves the problem then you'll have to track down the problem. I'd first check the seat nanny; if it isn't closing properly, I think spark is lost.

16GTHL_Wire7117.jpg.d137ff1a78d48f834e3f9ba006b2d4c3.jpg

Share this post


Link to post
Share on other sites
a_sannine

It all started last year when I was plowing , all the sudden it started to back fire , run very rough , smoking black ,shaking , barely made it to the garage , started using another tractor .

I will do the above Monday ,I will check on the serial number as well it does have the safety switch under the seat which I checked , and I crossed the wires togather as well , I tried every thing I could think off no luck so far .

Monday another round .

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

Sign in to follow this  

  • Who's Online (See full list)

    • AllisChalmers716
    • airgunner
    • PhanDad
  • Today's Birthdays

    No users celebrating today
  • Recent Status Updates

    • Dean McFadden

      Dean McFadden

      Good morning peeps! I’m always searching for helpful information with my AC collection. Hope to find out new information and pass on my own experience in restoration. Here are some pics of my babies. I’m still looking for front rims for the 410 so yesterday I put the 310 wheels on took it for a drive. Working pretty good but still needs some carb work. Gotta get the 310 running next. Have a great day!😁
       

      · 1 reply
    • thedaddycat

      thedaddycat  »  SmilinSam

      It's in pretty sad shape, but yes I have a yellow plastic cap that I'm fairly certain is what you need. PM me your details and I'll get it out to you.
      · 0 replies
  • Adverts

×