421 QE with clean carb won't run w/o choke - Snowblower Forum : Snow Blower Forums
 
LinkBack Thread Tools
post #1 of 3 Old 02-16-2019, 03:36 PM Thread Starter
Junior Member
 
Join Date: Feb 2019
Posts: 1
Post Thanks / Like
Thanks (Given): 0
Thanks (Received): 0
Likes (Given): 0
Likes (Received): 0
421 QE with clean carb won't run w/o choke

I have a power clear 421 QE. It only runs with the choke engaged 50%. Starts fine. I cleaned the carb. Problem persists. Any advice?
Engles330 is offline  
Sponsored Links
Advertisement
 
post #2 of 3 Old 02-16-2019, 04:11 PM
Senior Member
 
Join Date: Mar 2014
Location: Lowell area, MA
Posts: 3,246
Post Thanks / Like
Thanks (Given): 118
Thanks (Received): 277
Likes (Given): 358
Likes (Received): 633
Welcome to the forum!

Does this change under a load, clearing snow? Versus it just sitting there running with the paddles not engaged.

Is this a new development?

A few thoughts:
- are you getting good fuel flow? If you pull the fuel line off the carb, do you get a good stream of fuel? This would help show if your fuel filter is restricted, etc.
- possibly something in the carb is still not fully clean.
- you could have an air leak, which is allowing "raw" air into the engine, making your mixture extra lean. This can happen where the carb mounts to the engine, or air can sometimes leak in at the throttle shaft going through the carb.

One way to check for air leaks is to use a can of carb cleaner with the straw. Other flammable sprays are also ok. With the engine running, spray the cleaner where the carb mounts to the engine, and at the throttle shaft going through the carb.

If the engine sound changes, then air (and now carb spray) is being drawn in at an area that should be sealed. Don't get the spray near the carb's intake throat, as that will get drawn in, and confuse the test.

Ariens 1024 Pro
Toro Power Clear 221QR
Toro Power Curve 1800
RedOctobyr is offline  
post #3 of 3 Old 02-16-2019, 04:16 PM
Senior Member
 
JLawrence08648's Avatar
 
Join Date: Jan 2017
Location: Lawrenceville NJ
Posts: 2,119
Post Thanks / Like
Thanks (Given): 89
Thanks (Received): 175
Likes (Given): 68
Likes (Received): 406
Garage
Still, a dirty carb. Clean? How did you clean it? Soak in a dunk tank? Ultrasonic cleaning? Spray? Use welding tip cleaners? Remove the Welch plug?

1986 Ariens ST522, 5hp, 22"
1995 Murray Craftsman 10hp, 29" w. 12" impeller
A 1983 Real John Deere 10hp, 32" w. 12" impeller, 16" auger, 20" high front, cast iron gear box, chains
Noma 9hp, 27" w. 12" impeller
Noma 5hp, 24" w. 12" impeller, 20" high front
Gravely Convertible, 12hp Kohler cast iron, 26" width, 600 lbs of cast iron & steel, 2 speed impeller, 4 ground speeds
Dynamark 8hp, 26", 12" impeller, for sale
Several other 5hp, 8hp, several 2 cycle, all for sale
JLawrence08648 is online now  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Snowblower Forum : Snow Blower Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
Help with the choke and throttle settings? Pilot1226 Craftsman Snowblowers 8 11-23-2018 04:59 PM
Carb choke stop spring removal tips paulm12 Snowblower Repairs and Maintenance Forum 1 03-21-2018 04:28 PM
Choke connects how? HS1128 hobkirk Honda Snowblowers 7 02-25-2018 06:56 PM
Amazon Chinese carb sellers JLawrence08648 General Snowblower Discussion 2 01-17-2017 08:44 AM
Tecumseh Carb clean or replacement info pharris Snowblower Repairs and Maintenance Forum 3 01-15-2016 08:55 AM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome