Motorcycle

Motorcycle questions? Ask a mechanic.

Ask an Expert,
Get an Answer ASAP!

2008 Kawasaki Concours 14. I replaced the spark plugs and…

Customer Question
2008 Kawasaki Concours 14...

2008 Kawasaki Concours 14. I replaced the spark plugs and now it wont start. I sprayed starting fluid into the intake and it fires off and runs until the vapor is gone. I'm thinking the injectors arent spraying because I can see down the throttle body to where the intake valves are and I dont see any fuel spray when I crank the motor over.. What tells the injectors to spray their precious fuel?

Mechanic's Assistant: Have you checked the fuel supply? And are all the spark plugs working?

Fuel pump is working. I checked that and it has pressure. Spark plugs are working because when I spray Starting Fluid into the intake, the motor runs smooth until the starting fluid vapors are gone

Mechanic's Assistant: What is the model of your '08 motorcycle?

2008 Kawasaki Concours 14 ZG1400

Mechanic's Assistant: Are you fixing your bike yourself? What have you tried so far?

Yes I'm doing it myself. Ive checked all of the connections that might have come unplugged when I changed the spark plugs.. I changed the plugs one-at-a-time so I wouldnt cross the plugs for the coil paks that are on top of the plugs. Their is no fuel filter according to the service manual.

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

Just want to know what controls the injectors

Submitted: 7 months ago.Category: Motorcycle
Show More
Show Less
Ask Your Own Motorcycle Question
Answered in 5 hours by:
9/28/2017
Motorcycle Mechanic: Louie, Technician replied 7 months ago
Louie
Louie, Technician
Category: Motorcycle
Satisfied Customers: 13,287
Experience: 25+ yrs. experience
Verified

Hi and welcome to JustAnswer, I’m Louie. Sorry you had to wait awhile but I’ll do my best to help.
Initially, the injectors are controlled by the ECU when triggered by main/sub-throttle sensors, crankshaft and camshaft sensors among others.

Still, let's try check and review the basics other than fuel, fuel pump, fuel pressure. Proposed preliminary tries (if have not been done), check:

  • • condition/fittings of connectors and wiring to the different sensors;
  • • sensor voltage on the brown/black wire from the ECU;
  • • and ensure good ground connections, common ground tie-points and all the harness / black/yellow wires joined to these common tie-points;
  • • presence and consistency of IGN+12 to these injectors;
  • • pulsating / switching voltage to ground from the ECU to the injectors when attempting to start/cranking;
  • • clicking sound when the injectors are pulsed;
  • • fuel flow to the injectors.

Even if just for test purposes, hardwire a secondary ground line from the battery's - terminal to the frame, to the engine and to these common grounds / black/yellow tie-points.

This is an independent site and members of this online community provide information, repair tips, technical assistance as a form of paid Q & A service.

Ask Your Own Motorcycle Question
Was this answer helpful?
Ask Louie Your Own Question
Louie
Louie
Louie, Technician
Category: Motorcycle
Satisfied Customers: 13,287
13,287 Satisfied Customers
Experience: 25+ yrs. experience

Louie 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:

I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry.

Stephanie PElm City, NC

used your service this weekend with "Trecers" help. thank you ,thank you, thank you. replaced an A/C fan motor. Local Auto Zone had part. $15.00 "tracer" fee and $40.00 for parts, I saved several hundreds of dollers at a shop. i will recommend you and use you in the future.

David L.Richmond, TX

9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much.

PhilMarysville, CA

Lurch. Thank you very much. I had real doubts about this website but your promptness of response, quick followup and to the point answer with picture was incredible.

CharlesWalnut Creek, CA

As a single woman, I really appreciate an excellent and affordable opinion.
Thank you Geordie, I will not hesitate to contact justanswer in the future!

SueCharleston, WV

Another great insight to what may be the problem. I will have my mechanic take a look at it tomorrow. Thanks again, Frank...you do indeed know your stuff.

JimCastleberry, FL

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

< Previous | Next >

Meet the Experts:

Jeff Policky

Jeff Policky

Motorcycle Mechanic

2,425 satisfied customers

Yamaha Gold, Suzuki Gold, Honda Bronze, Polaris Bronze, BRP

Louie

Louie

Technician

13,287 satisfied customers

25+ yrs. experience

TIMOTO

TIMOTO

Motorcycle Mechanic

1,233 satisfied customers

Honda registered technician, silver level award, former Kawasaki/Suzuki tech, 40+ years exp.

Andre Pilon

Andre Pilon

Motorcycle Mechanic

1,032 satisfied customers

Over 25 years experience, ICS, MMI, Owned shop for 12 years, worked tech-support for Harley Davidson

Kenny O.

Kenny O.

Motorcycle, ATV, Mules, Side by Side's Product Specialist. All Brands

619 satisfied customers

Worked for Kawasaki Motors as a Product Support Specialist (Factory Support) for 24 years

asphaltcycles

asphaltcycles

Motorcycle Mechanic

458 satisfied customers

I operate a motorcycle dealership and CCS Ducati Race team.

Glenn Adams II

Glenn Adams II

Motorcycle/ATV Technician

393 satisfied customers

6 years Motorcycle/ATV/Water Craft; 4 years auto; 18 years carpenter

< Previous | Next >

Related Motorcycle Questions
Float bowl needle stuck open, crankcase filled with fuel.
Float bowl needle stuck open, crankcase filled with fuel. I'm working on a 2007 YZ450 where the float bowl stuck open and the crankcase ended up filling with fuel. The owner ran the bike not knowing t… read more
kwiggins29059
kwiggins29059
Associate Degree
219 satisfied customers
I have abob .an many people like me find there rear guard
I have a*****bob .an many people like me find there rear guard cracks .so i was woundering if a nightrain guard will fit an also what about seat configuration. … read more
Steve
Steve
I&C technician
Vocational, Technical or Trade Scho
7,084 satisfied customers
What is side clearance for rings on screaming eagle forged
what is side clearance for rings on screaming eagle forged piston … read more
kwiggins29059
kwiggins29059
Associate Degree
219 satisfied customers
Just happend today, Yes, Im working on a 06 Suzuki sv650
JA: I'll do all I can to help. How long have you been dealing with this? Customer: Just happend today JA: Do you plan on doing the work yourself? Customer: Yes JA: Anything else we should know to help… read more
Louie
Louie
Technician
13,287 satisfied customers
I have a1990fxr I replaced oil pump gasket removed oil lines
I have a1990fxr I replaced oil pump gasket removed oil lines and oil line on the oil filter mount put back together now I don't have oil Pressure can you tell me if I have the lines on the oil filter … read more
Steve
Steve
I&C technician
Vocational, Technical or Trade Scho
7,084 satisfied customers
I went to start my 2001 harley davidson fxdx up the lights
I went to start my 2001 harley davidson fxdx up the lights came on when i turned the key then i tried to start it the lights went out and now it sits dead… read more
Steve
Steve
I&C technician
Vocational, Technical or Trade Scho
7,084 satisfied customers
Replaced 2 brand new 's irrect idling runs on choke on. Off
Replaced 2 brand new carburetor's irrect idling runs on choke on. Off choke dies … read more
kwiggins29059
kwiggins29059
Associate Degree
219 satisfied customers
Why would a 2006 Dyna wide glide rear rotor be turning gold.
Why would a 2006 Dyna wide glide rear rotor be turning gold … read more
Steve
Steve
I&C technician
Vocational, Technical or Trade Scho
7,084 satisfied customers
I have a 2011 can am spyder and the battery was completely
I have a 2011 can am spyder and the battery was completely dead, replaced it and 2 days later the low battery light is on, put it on the battery tender and now the battery is charged fully however, it… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
Switched out bars on 2016 street gluide now bike has no
Switched out bars on 2016 street gluide now bike has no power. Well except for blinking red security dot. And i can fet odometer to show.... but nothing else. … read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
2 017 p0laris 570 midsize 30 miles per hour starts to lose
2 017 p0laris 570 midsize 30 miles per hour starts to lose power … read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
Louie, We had talked a while ago about our 1978 Kawasaki
Hi Louie, We had talked a while ago about our 1978 Kawasaki 305KLZ I believe about the carbs the left side was pouring fuel into the cylinder. I got it apart and the float was not making a good seal. … read more
Louie
Louie
Technician
13,287 satisfied customers
My exhaust valve guide on my harly is broken, is it possible
my exhaust valve guide on my harly is broken, is it possible to replace it myself … read more
Steve
Steve
I&C technician
Vocational, Technical or Trade Scho
7,084 satisfied customers
2002 polaris sportsman 700 had bad ducati stataor replaced
2002 polaris sportsman 700 had bad ducati stataor replaced it with the new upgraded polaris model. Replaced carb intake boot cleaned carb battery is good new plugs. Will run strong on idle at about 20… read more
Louie
Louie
Technician
13,287 satisfied customers
I have a HIsun 700 UTV side by side that will hardly back
i have a HIsun 700 UTV side by side that will hardly back up.... it jerks and jerks. I want to diss … read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
I think I have a charging system problem on my 82' Honda 750
I think I have a charging system problem on my 82' Honda 750 Custom. If I run through the gears hard, the engine misfires and bogs down when I hit around 7K rpm. If I go easy on the take off, I get th… read more
Steve
Steve
I&C technician
Vocational, Technical or Trade Scho
7,084 satisfied customers
Cushman scooter #014061 is on frame in front of kick stand.
cushman scooter #014061 is on frame in front of kick stand … read more
Daniel
Daniel
Manager
57 satisfied customers
04 1500 vulcan classic voltage at battery 16.5 volts over
04 1500 vulcan classic voltage at battery 16.5 volts over charge? Bad regulators? … read more
Steve
Steve
I&C technician
Vocational, Technical or Trade Scho
7,084 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