Question about 1981 Yamaha XS 400 Special

1 Answer

The bike turns on and turns over but no spark to spark plugs. replace coils and spark plugs, cleaned carbs i dont know what else to do.

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 338 Answers

Check your run stop switch on the handlebar for continuity.

Posted on May 12, 2010

1 Suggested Answer

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

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

My v star 650 is loading up in rear cylinder. I have clean the carbs. Put new pick up coil and stator. Still spitting gas out of rear cylinder pipe. Dont know what else to do.


Not trying to seem like a jerk but did you replace the spark plugs? It may still get spark but it can sometimes be too weak to get ignition (check by pulling the plug out, putting it back on the boot, touching the plug to something ground on the bike like the engine, then turn it over to see if spark is jumping the gap). The obvious thing is that you're not getting spark, the next thing coming to mind is good ground. Hopefully this helps.

Apr 28, 2015 | GAS Motorcycles

1 Answer

Harley Davidson - FXSTI Softail standard cranks but will not start


If the bike has carbs, try cleaning them because the only other problem is that the bike is not getting fuel.

Apr 17, 2014 | Harley Davidson Motorcycles

1 Answer

97 Suzuki intruder 800


Drain the carb floats and clean with Seafoam. Gas breaks down after about 6 months and the ethanol in the gas coats the carb.

Oct 12, 2013 | Suzuki Motorcycles

1 Answer

Was riding my ZZR600E out locally last week without when for no apparent reason the bike starts to misfire and I lose power at low revs. After limping home I take a look....fuel is fresh so not likely to...


You can check the primary and secondary resistances in the coils, dont know offhand the values, but the coils should be the same.
The fact is gets worse as it warms could mean a carb float is flooding,
The vacumn fuel tap can be a problem, this can also cause fuel to flood into the sump , and cause this problem.

Aug 15, 2011 | 1996 kawasaki ZZR 600

1 Answer

Fully charged battery on my 1996 cb500,choke out however wont fire up just does a little puff like sound


NO - SPARK
Check for spark at spark plug.
1. If no spark, test the wire to the coil with test light and see if you have power to coil.
2.If no power to coil, make sure your on/off button is on and working.Use test light.
A. Power at the switch but not at the coil indicates a broke wire from switch to coil.
B. NO power at the switch indicates ingintion switch is off or faulty and not sending power to your switch , make sure key is on. Use trest light.
3. If you have power to the coil but no spark from the coil - replace the coil

SPARK
Check for spark at the plug
1.If you have spark at the plug, but not starting - check that your carbs are getting gas.
2.Petcock Could be off, Fuel Filter could be clogged, Carbs could be dirty or clogged and your not getting any gas.
3.Pull spark plug - If no gas present then your not getting gas, if wet then you getting gas and your flooded. Make sure you have good gasoline, Bad gas won't burn.
or your bike is worn out and dont have any compression.

With Good gas, and Good Spark, and Good compresssion, the bike will run.

If your not getting gas to your motor through the carbs, pull carb off and thouroughly clean it.

Dec 03, 2010 | 1997 Honda CB 500 S

1 Answer

I have a 1974 dt 250 same as an dt 360 the bike has sat in a barn about 4 yrs it will not start removed and cleaned the gas tank went thur the carb new plug used ignition coil compression about 50 to 75...


Compression is too low!

Replace the piston rings.

Also check continuity from engine to frame till high-tension coil...
Check if breaker points aren't dirty ( clean out with fine sandpaper )
Check breakerpoint settings

Oct 31, 2009 | 1974 Yamaha DT 360

1 Answer

Put new carb on 86 cr 80 ran fine 4 10 minutes then quit changed spark plug and gas still nothing. has spark dont know how hot also changed manifold appeared to be dry rotting still nothing. even attemped...


for any motorcycle to run you need three things. spark, fuel and compression. i see you've tried to get fuel and spark. if you have spark thats one down. dont pour fuel into cylinder. instead spray tiny bit of brakeclean or carb clean into spark plug hole. i have a feeling if you drained your gas after the carb clean the carb most likely sucked bad gas back up and might need cleaned again. ive seen it happen alot on ols bikes.

Jul 11, 2009 | 1993 Honda CBR 600 F(2)P

2 Answers

Cold starting problems 1981 yamaha maxim 400


could be a few things going on . have you checked the vacuum lines? could have one plugged or collapsed? Could be a carb problem? have you installed a carb kit yet ? or you could try a hotter spark plug.

Jul 10, 2009 | 1983 Yamaha XJ 650

1 Answer

Cylinder one and two have trouble firing, and besides the petcock on the gas tank, there is another fixture on it as well, with and export hose mount, and i dont have my choke hose in on the carbs, my...


check the condition of the spark plug if it is black you must check the spark with a new plug, make sure there is no gas fumes present when doing the spark test. attach plug for cylider in quest to the wire use a jumper wire with aligator clips on each end to hook onto hooked tip of plug the hook the end of jumper to ground pull out the other plug wires so the bike won't start during check turn over the bike look for a blue or purple spark if you don't see this color (spark is white or yellow) the coil or wire from coil is bad, replace. If the spark is good the carb is flooding the cylinder and must be removed and cleaned.

Jul 08, 2009 | 1980 Suzuki Gs 550 L

2 Answers

My 98 Suzuki VL1500 has a weak spark to the rear cylinder. i've replaced plug, plug wire, coil, inition module, and stator. I've switched coils and plug wire from one cylinder to the other. The weak spark...


it is probably not a weak spark. if you are determing this because the plug is sooting up and fouling and or the bike is missing or just not running right. your carbs need rebuilt. know of same problem with friends bike. tried eveything. coils igniter etc.. check out g man industries.com give them a call they will explain what is going on with your bike

Jun 13, 2009 | 2001 Suzuki VL 1500 Intruder LC

Not finding what you are looking for?
1981 Yamaha XS 400 Special Logo

Related Topics:

147 people viewed this question

Ask a Question

Usually answered in minutes!

Top Yamaha Experts

dhnguyen

Level 2 Expert

281 Answers

Steve Sweetleaf
Steve Sweetleaf

Level 3 Expert

1144 Answers

Tony

Level 3 Expert

2600 Answers

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

Answer questions

Manuals & User Guides

Loading...