(800) 853-2651
SHOP NOW

Kohler K341AQS, spark knock?

C

Chris Szilagyi

New User
Hello,

I have a John Deere 300 with the 16 HP Kohler K341AQS engine. It runs great until it has been running for over an hour (hot), it begins to have a bit of spark knock (similar to in a car when you get spark knock or ping) only when under a heavy load (cutting thick grass). Otherwise it never knocks and runs perfect even under a heavy load. It only seems to have this problem when it"s been running for an hour or so. I had the tractor in about 2 years ago and checked, and they tuned the engine. But, my question is, would this be something fixed by simply adjusting the mixture screws on the carb, or is this something with the points/timing?

Any advise is greatly appreciated!!! Thank you.
 
My memory is bad, so don't take my word for it, but i think that I read in the manual that they recommended cleaning out the carbon (remove head) once in a while.
I Got a 300 with that engine..nice tractor.
Kenny
 
I"ve looked around and I didn"t see anything else on this, although another reply to this thread also said carbon buildup. Does anybody else think this is the issue? I have never removed the head off of one of these, but I"m sure I can figure it out if needed. Unfortunately info on these engines is rare and hard to find.

Thanks again to all!!

--
Chris
 
I"ve looked around and I didn"t see anything else on this, although another reply to this thread also said carbon buildup. Does anybody else think this is the issue? I have never removed the head off of one of these, but I"m sure I can figure it out if needed. Unfortunately info on these engines is rare and hard to find.

Thanks again to all!!

--
Chris
 
Make sure the cylinder head fins and cylinder fins are not clogged by oil/dirt or grass. Use a nozzle and blow back thru the front grill area. Remove the grill. Also check rotating screen on the flywheel for plugged holes.

Had a similar engine on a generator/welder and mice had built a nest which clogged the head fins. It knocked until it blew the head gasket and warped the head. There wasn't a speck of carbon in that head.
Roger In Iowa
 
(quoted from post at 12:05:15 05/30/09) Unfortunately info on these engines is rare and hard to find.

Thanks again to all!!

--
Chris
Click to expand...

NOTHING "RARE and hard to find" about it.

The operator's manual and shop manual are available FREE on the Kohler engines site. You can view them on-line or print off the whole manual or just the page(s) you need.

BEFORE you do anything else, do yourself a favor and SET THE TIMING, following the procedure in the manual. Also, check under the engine shrouding for debris that may be causing part of the cylinder to get HOT.

Only AFTER checking those items, would I even CONSIDER pulling the head.


Service Manual

http://www.kohlerengines.com/onlinecatalog/pdf/tp_2379.pdf



Owner's Manual

http://www.kohlerengines.com/onlinecatalog/pdf/tp_1346_c_all.pdf
 
Thank you very much, I had no clue that those manuals were online.

I will try cleaning the engine, check the timing, and see how it goes, and post back the results in a week or two.

Thank you again for all of the help, this is a very helpful board.

--
Chris
 
The Kohler manual says the head should be removed every 500 hrs (250 Hrs with leaded gas) and the combustion chamber should be cleaned.
I would guess carbon buildup might be your problem.
Having said that, I have lots of older Kohler powered tractors and I have never pulled the head to clean out the carbon on any of them.
 
You must log in or register to reply here.

Similar threads

G
John Deere 155c. 2006. What to do with it .
Replies
2
Views
161
Greenfrog
G
Superbros8
Ford 4000 poor running when warm
2
Replies
35
Views
840
Superbros8
Superbros8
W
1953 Ford NAA Jubilee stumbles under load
Replies
3
Views
150
old
O
X
04 Simplicity Prestige: Kohler Questions, possible headg
Replies
8
Views
929
xjfish
X
W
John Deere 212 Riding Mower Kohler With A 12 hp K301 AQS
Replies
3
Views
607
T.R.K.
T
Tractor Parts Tractor Manuals

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.

Copyright © 1997-2024 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters
Website Accessibility Policy

Back
Top