Question about Motorcycles

1 Answer

1986 yamaha yfm 225s will not fire spark plug

Was running ok,parked it would not crank when tried later plug ok fuses an relays ok

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Motorcycles Master
  • 8,404 Answers

Plug not firing is a problem in in the coil, high or low side power, or the wire itself, or the points if your bike has points.

Posted on Dec 02, 2012

Ad

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad
  • 48 Answers

SOURCE: 2004 Yamaha V-star 650, wont start.

change the coil you may not think it got hot but sometimes a coil can overheat on the inside just enough to break the copper winding. when riding hard slow down for a couple of miles to give everything time to get back to normal temps before shutting it off

Posted on Jan 13, 2009

  • 2 Answers

SOURCE: Yamaha 2001 Raptor 660, sat for a year, wont

Your gas is bad.  I have to change my all the time If your starter turns but dose not engage the starter barring is out DO NOT BUY STOCK. buy after market when you replace that.  they 

Posted on Mar 21, 2009

  • 3567 Answers

SOURCE: I have a YFM 200 (four wheeler) and am getting no

Check the fuses. Next, check for spark but with a new spark plug. How good is the battery? "Some juice" does not always translate into having enough juice for a spark. Fill the battery cells with water covering the battery plates. Jump start from your car battery. Is the kill switch on? Does the side stand have a kill switch? Is it working properly? Tip-over kill switch on your bike? Check the operation of the ignition switch and all kill switches with a volt ohmmeter.

Check the wiring harness. Did a wire come unplugged? Are all wires clean and with solid connections? Any abraded or pinched wires? Is the bike in neutral and the neutral light is lit up? If no neutral light, check the neutral switch and neutral switch wire on center casing. If still no spark, get CDI system and coils checked at the dealers shop.

Please rate this answer. Thanks sharbow!

Posted on Apr 20, 2009

  • 89 Answers

SOURCE: How do I adjust the valves on my 2003 Yamaha Warrior YFM 350X?

first you need to remove everything that covers your valve covers(gas tank etc.) remove the intake valve cover,and the rotor nut and timing plug.set the engine a t.d.c.(top dead center)fit a socket onto the rotor nut and turn it counterclockwise until the"I" mark appears align it with the index mark in the timing hole.use a flat feeler gauge between the top of the valve and the adjuster.loosen the locknut and turn the adjuster just until you feel resistance on the feeler guage.hold the adjuster and tighten the lock nut down.i can not tell you the min.clearance spec to your quad since i have a 660 raptor.try using the smallest clearance number.

Posted on Apr 25, 2009

DoubleClutch
  • 376 Answers

SOURCE: yamaha xv 1100 virago

To me it sounds like the coil is breaking down and not working at higher RPM's. You can take them off and have them tested at a service shop.

Posted on Dec 12, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

1997 jeep wrangler 4cyl not firing all new wires plugs cap a rotor button was running after installed,


ok, why not correct your first post
edit to
1: will not crank starter is silent
2: or cranks fast but will not start.

you cant get to 2 unless #1 works,
check fuses first.
key on CEL glows, if not ECU has no power. 12vdc.
when you crank
the ECU closes the ASD relay
if the relay drops out in the middle of cranking
that means the ECU did that ON PURPOSE
and always tells you why, but that takes a scan too.
why not let your mech do that,
you dont have tools so, its hopeless , for sure.
I bet.

IF the ASD does not drop OUT
then it's what?
total loss of spark (a bad spark coil ?)
or total loss of fuel pressure.

if sparks ok (a simple test done for 100 years)
endless examples, and in all car books.
if sparks ok
then a test fuel test runs engine for 2 sec. about, telling you lost fueling
and then I post a wall of text on fueling (yah complex. and not doing it)

Jan 29, 2017 | Jeep Cars & Trucks

1 Answer

1996 Toyota Corolla cranks will not start. Has spark, fuel pressure at rail, no injector pulse with noid light when cranking. MIL light very dim. Unable to retrieve fault codes


Check distributor rotation to ensure good timing belt. If good, check crank and cam position sensors. The computer fires the plugs and injectors based on many factors but most importantly the crankshaft and camshaft position.

Jan 24, 2017 | Toyota Corolla Cars & Trucks

1 Answer

1986 yamaha moto 4 cdi wiring diagram


Your fault most probably lies in a few wiring connections, why do you think its the cdi though?

Mar 23, 2013 | 1986 Yamaha Yfm225 Yfm 225 Moto 4 Air...

1 Answer

Truck wont start after changing the spark plug and wires


It's already not start before you changed or after changed ?
If before. the timing belt or might be broken , burn fuel pump's fuse, injector's fuse or main engine relay.
If after. It's possible miss some wire that still not connect.

Mai

Feb 26, 2013 | 1986 Ford Bronco

1 Answer

Yfm 350 warrior air mixture screw is


this definetly seems like your float adjustment needs checking/resetting.

Jun 16, 2012 | Yamaha Genuine Yfm 350 Yfm 600 Yfm660...

1 Answer

Hi i have a 1986 yamaha rz 250 and both spark plugs are firing outside the engine, earthed out but when inside the engine one fires and other does not?


change both plugs so you know they are good ,& caps & ht leads to coils, have you changed the jetting in the carbs, check & put back to standard , are carbs working ok , could be flooding on one side if needle jet is in wrong possition or jamming up, does non firing plug come out wet?

Jan 09, 2012 | 1986 Yamaha RD 350

1 Answer

Suddenly refuses to start,first time since i got it,plenty of fuel,good spark from plugs,fuses all ok,turns over perfectly but wont fire


Crank it long lets say 10 seconds remove one plug if is dry, no fuel! now inspect EFI fuse OK, then SWAP EFI relay for other that look the same like horn relay, unable to do that let somebody else crank the vehicle and put you finger on the relay clicks EFI system ok.

Spark plug dry (continue) while somebody cranck the car put a long screw driver in the injectors and the other end close to your ear, did you listen the ticki noise from the injectors No? probably no crank sensor signal.

Spark plug is wet, but the spark wont ignite that fuel. bad fuel ! or bad timing.

All this easy test are done asuming you dont have profecional tool like stetoscope, scanner, etc

Dec 19, 2010 | 1998 Toyota RAV4

1 Answer

Engine turns over, won't start, no fire at plugs. There's plenty of fuel, and no fire from any of the plugs. All fuses and fusible links are good. I pulled the plugs to check for a spark, and there's no...


What are you wondering is correct. Let check the coil first. if coil is good the there is a problem with the ignition module. If the ignition module is good then a problem with the crankshaft sensor. The coil can be checked by measure resistance of the terminals of the primary coil and secondary coil separately to see if it open. To check if it can generate a spark, once you identify the primary coil terminal, run 12 V wire to these terminal, connect a spark plug to the secondary coil, by just leaving a spark plug with connected with spark plug wire and let it touch the engine chassis. Now you have to make pulses at the 12 volts connection by making a break and connection several time to turn it on and off to generate the spark at spark plug. The ignition module is supposed to do what you are doing now to generate the spark. If it is bad, it can't do what you did then a spark is not generated. For the crankshaft sensor, only the shop can tell you it is bad or not. Good luck.

Nov 14, 2009 | 1995 Honda Civic

1 Answer

1986 Chev Z24 no start after lengthy storage


Have you checked for spark or tried shooting carb cleaner in the intake to see if it will fire?

May 02, 2009 | 1986 GMC S-15

Not finding what you are looking for?
Motorcycles Logo

Related Topics:

185 people viewed this question

Ask a Question

Usually answered in minutes!

Top Motorcycles Experts

Arnie Burke
Arnie Burke

Level 3 Expert

4536 Answers

yadayada
yadayada

Level 3 Expert

76691 Answers

kakima

Level 3 Expert

102366 Answers

Are you a Motorcycle Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...