Small Engine

Small Engine Troubleshooting Problems? Ask a Mechanic Now.

Ask an Expert,
Get an Answer ASAP!

I have a 18 up model 422437 won't fire have replaced coil…

Customer Question
I have a 18...

I have a 18 up model 422437 won't fire have replaced coil but still not foreign plugs

Mechanic's Assistant: I'll do all I can to help. How long have you been dealing with this?

About a week

Mechanic's Assistant: Do you plan on doing the work yourself?

Yes

Mechanic's Assistant: Anything else we should know to help you best?

No that's it

Submitted: 1 year ago.Category: Small Engine
Show More
Show Less
Ask Your Own Small Engine Question
Answered in 6 minutes by:
4/1/2017
Technician: Curtis B., Technician replied 1 year ago
Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 31,839
Experience: have worked on and around most engine models for 35 yrs./Polaris ATV expert
Verified

Welcome to JUST ANSWER small engines, let me try to help you !! I don't know it all, but maybe together we can get you a satisfactory answer!

Ask Your Own Small Engine Question
Technician: Curtis B., Technician replied 1 year ago

Remove the kill wire to the coil, and test for spark. The coil and the magnet is all that make the spark. If it then has spark, the kill circuit is shorting out the spark.

Ask Your Own Small Engine Question
Customer reply replied 1 year ago
Tried it still has no spark
Technician: Curtis B., Technician replied 1 year ago

You are sure there is no spark to the plugs ? If there is none, then the new coil is defective.

Ask Your Own Small Engine Question
Technician: Curtis B., Technician replied 1 year ago

I see question is still open, did you find problem?

Ask Your Own Small Engine Question
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a technicianLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask Curtis B. Your Own Question
Curtis B.
Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 31,839
31,839 Satisfied Customers
Experience: have worked on and around most engine models for 35 yrs./Polaris ATV expert

Curtis B. is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

You did one super job of explaining to me everything there is to know about this fridge. I'm looking forward to asking you questions in the future.

JimmyBagley, IA

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

< Previous | Next >

Meet the Experts:

Curtis B.

Curtis B.

Technician

31,839 satisfied customers

have worked on and around most engine models for 35 yrs./Polaris ATV expert

Rick

Rick

Factory Authorized Trainer

4,218 satisfied customers

Outdoor Power Equipment technical trainer since 1990, covering eight states.

Jon K.

Jon K.

Small Engine Diagnostic Expert

2,995 satisfied customers

Gold certified Stihl tech, Service Manager for a rental/repair shop.Certified in most small engines

James W

James W

Small Engine Troubleshooting Expert

2,986 satisfied customers

7 years as Mechanic & Parts Manager for Brother who has Owned Lawn & Garden Repair shop for 35 years

Vince O.

Vince O.

Small Engine Technician

2,927 satisfied customers

Over 30 years experience repairing lawn and garden equipment. Chainsaws, mowers,blowers and trimmers

Wayne

Wayne

Engine Rebuilder

2,041 satisfied customers

many years on egine rebuilding, lawn mower,roto tiller,Truck,and small engines

RUSS

RUSS

SERVICE TECHNICIAN

1,723 satisfied customers

28 YEAR SERVICE TECHNICIAN

< Previous | Next >

Related Small Engine Questions
I have a Generac Guardian series 20kw running on LP. When i
I have a Generac Guardian series 20kw running on LP. … read more
Hank F.
Hank F.
Service Technician
High School or GED
5,365 satisfied customers
My 17500E will not start. I am not getting spark on one
My 17500E will not start. I am not getting spark on one cylinder … read more
Hank F.
Hank F.
Service Technician
High School or GED
5,365 satisfied customers
What's the best way to replace an ignition coil on an 18 hp
What's the best way to replace an ignition coil on an 18 hp Briggs model number(###) ###-####01 in a Craftsman garden tractor?… read more
Curtis B.
Curtis B.
Technician
Associate Degree
31,839 satisfied customers
My name is ***** ***** exmark zero turn with Briggs and Stratton
My name is ***** ***** exmark zero turn with Briggs and Stratton engine I believe is not getting fire to spark plugs. … read more
Donald
Donald
Owner / Technician
High School
2,580 satisfied customers
42A700, new spark plugs and it starts right up once, won't
Customer: Ken 42A700, new spark plugs and it starts right up once, won't restart later, seems it has no spark, fuel doesn't seem to be problem … read more
JohnF2015
JohnF2015
High School Diploma
1,260 satisfied customers
Hello , I have a FC420V Kawasaki engine on an old (1984)
Hello , I have a FC420V Kawasaki engine on an old (1984) Dixon ZTR. It has been a great engine until last week. I was letting it idle before I drove it up the ramp to the trailer when it died. I have … read more
Curtis B.
Curtis B.
Technician
Associate Degree
31,839 satisfied customers
John Deere Mower LT150 (15 HP Briggs & Stratton). From week
John Deere Mower LT150 (15 HP Briggs & Stratton). From week to week won't fire off - appears to be getting fuel OK. Have re-gapped plug once and it started. After cutting, turned off, then next week w… read more
Curtis B.
Curtis B.
Technician
Associate Degree
31,839 satisfied customers
I have a 52" Hustler FasTrack with a 18 hp Honda engine. When
I have a 52" Hustler FasTrack with a 18 hp Honda engine. When I go to start it after it sets for a week, there is no fire. I've pulled the plugs, dried the gas off them, Then I pulled the cowling off … read more
Richard
Richard
Senior Mechanic & Technician
69 satisfied customers
Model 422437 18hp twin briggs with no spark/very weak. Replaced
Model 422437 18hp twin briggs with no spark/very weak. Replaced coil and removed kill wire with no success. Gapped coil .10, magnet on flywell still has some pull. need help.… read more
Curtis B.
Curtis B.
Technician
Associate Degree
31,839 satisfied customers
Series 1000 Model 13AL11CG712 . Replaced battery, mowed for
Series 1000 Model 13AL11CG712 . Replaced battery, mowed for maybe 10 minutes, mower shut off Starter turns over but engine won't start… read more
Curtis B.
Curtis B.
Technician
Associate Degree
31,839 satisfied customers
I have a poulan 18 wild thing chain saw that wont start.
I have a poulan 18" wild thing chain saw that wont start. I replaced the spark plug,cleaned up the magnito, rinsed out the gas tank & put new gas in it but it still won't start. I'm notsure if its get… read more
roger
roger
owner of small engine shop
Vocational, Technical or Trade Scho
350 satisfied customers
I have a motor, Model# 422437 Type 1209-01, this is a twin
I have a motor, Model# XXXXX Type 1209-01, this is a twin cylinder 18 hp 4 cycle engine. I can't get the motor to turn over fast enough to start the engine. I have bypassed all grounds and power to th… read more
ranwell1
ranwell1
CEO
High School or GED
5,039 satisfied customers
I have a Honda 18 hp GX610 That wont fire we fried a coil
I have a Honda 18 hp GX610 That won't fire we fried a coil when we accidently hooked up the Engine stop diode to the positive side of the switch we got a new coil and still no fire it is adjusted righ… read more
cameronsmallengines
cameronsmallengines
Small Engine Service Technician
High School or GED
217 satisfied customers
Hi. Ive got a 18 hp Onan that was put in my riding mover about
Hi. I've got a 18 hp Onan that was put in my riding mover about 10 years ago. Always easy starting. Just lately (last month or so), it has been getting harder and harder to start. That is, crank and c… read more
Tech4you
Tech4you
Electrician/Mechanic
Associate Degree
1 satisfied customers
I am having troble getting my riding lawn mower to start. It
I am having troble getting my riding lawn mower to start. It was running fine, and just quit all of a sudden. I put a set of new spark plugs in it. It turns over and over, but just won't fire up. It a… read more
Chris Huber
Chris Huber
President
Vocational, Technical or Trade Scho
501 satisfied customers
I have a scag mower with a Kohler Command 25hp Engine. On 4/18/09
I have a scag mower with a Kohler Command 25hp Engine. On 4/18/09 JR answered my question but it turned out not to work. So I iwll repeat the problem and provide key stats. One piston fires just fine … read more
Chris Huber
Chris Huber
President
Vocational, Technical or Trade Scho
501 satisfied customers
I would like to know how to replace a coil in a Briggs and
I would like to know how to replace a coil in a Briggs and Stratton 18 hp motor. The new coil has a terminal with a small wire and I am not sure what it connects to. From the diagram that came with th… read more
PK.
PK.
Owner
High School or GED
943 satisfied customers
My 2003 cub cadet utv wont start. For the last year, it began
My 2003 cub cadet utv won't start. For the last year, it began having problems starting-sometimes it would and sometimes not. I am not a mechanic and do not know much about engines but I have narrowed… read more
PK.
PK.
Owner
High School or GED
943 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x