Question about 1973 Yamaha DT 360

2 Answers

Weak spark 1973 yamaha rt1 i don't see a spark

Posted by on

  • brian sroka Jan 18, 2012

    i see spark with the spark plug boot off but it seems to be weak. it will not jump the plug the plug is gapped and ive tried a few different plugs condencer ,points, ignition coil are new

×

Ad

2 Answers

  • Level 1:

    An expert who has achieved level 1.

    New Friend:

    An expert that has 1 follower.

    Corporal:

    An expert that has over 10 points.

  • Contributor
  • 1 Answer

My buddy has a rt1 360, same thing happened years ago. We pulled the flywheel and cleaned the rust off of it, and either cleaned the points or got new ones, and that solved the spark issue.

Posted on Feb 26, 2015

Ad
  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Scholar:

    An expert who has written 20 answers of more than 400 characters.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 52 Answers

Problem could be a few different things. Not sure on all the ignition parts on that bike, but could be a bad sparkplug cap, wire, coil or magneto. My recommendation would be to first take the spark plug cap off. Trim a bit off the wire and put the cap back on. Over time spark plug caps move quite a bit and wear out the wire inside cause a weak connection.

Thanks

Posted on May 26, 2011

Ad

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.
Good luck!

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

What is spark plug gap on a 1971 rt1 360 yamaha and oil to gas mixture


Hi, Brian NGK B8ES gapped at .028" oil gas ratio 32:1 sorry you can't find the first and best tool you ever bought for your Yamaha despair not for a mere $0 you can download another one. For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
http://www.carlsalter.com/download.asp?p=1797
OEM parts for Yamaha
Clymer Repair Manual for Yamaha DT1 DT2 DT3 DT250 DT360 DT400 MX250 MX360
Yamaha RT1

Apr 08, 2016 | Yamaha Motorcycles

3 Answers

Tb7oss trimmer won't start


to be honest, it would probably be less expensive and far less time consuming to replace the entire trimmer with a new/used timmer. If you are willing to invest the time, replace the magneto, the spark line and be certain the spark plug is clean and properly gapped.

Oct 06, 2014 | Troy Bilt Tb70ss Gas Trimmer

1 Answer

ZX7R weak spark


low battery
bad spark plugs if using old ones to test spark , how did you?
are all spark plugs weak.?
use a spark tester , or new spare spark plug to do the tests
gapped to factory spec.

Sep 22, 2013 | Motorcycles

1 Answer

I have a 1973 Yamaha 360 Enduro VIN/RT1-134437. I'm going to sell it and wanted to see if there are any other specific letters for the model type (DT, etc)


Hi, Rustynortont the answer to this question is way above my pay grade and for this situation, I would call my local dealer or reputable shop's service/parts department and inquire about any possible quick fix, answers, or parts inquiry.
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
What is the difference between Yamaha DT 360 and RT2 360
List of Yamaha motorcycles
DOWNLOAD NOW Yamaha DT250 DT360 DT 250 360 Service Repair Workshop Manual...
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-dt

Aug 18, 2011 | 1973 Yamaha DT 360

1 Answer

My john deere lt133 riding lawn mower has been shutting down when it get's hot and now it won't start at all. i took a spark tester and I'm getting plenty of spark on everything but the plug. I...


Hi, what are you calling proper voltage? If its a gap tester it should jump at least 8mm. If its a peak voltage tester it should be at least 12,000 volts. If not the ignition module is faulty, which is very common on kohler engines. Hope this helps, regards Phil.

Jun 30, 2011 | Garden

1 Answer

The bike is starting only with small plug gap.If we set the gap to original it wont start? tell me the reason?


.....A weak battery comes to mind for starters. A carboned up spark plug is another; start with a new spark plug. If I recall correctly from 39 years ago, your bike has ignition points and condenser. Remove the points cover (on left end of the overhead cam), and check the points. Burned? Pitted? Get a new set of points and condenser but for now, just file the points a bit using an emery board or metal fingernail file. Set the points to .015 clearance at the high point on the cam lobe. If you have a timing light you could check the timing and adjust as needed by rotating the points base plate left or right. Bad points give resistance to the flow of electricity. When the points are closed, the condenser gets charged up. Less electricity going through the points means less of a charge going into the condenser. Now the points open up and the stored charge goes from condenser to coil. The coil then produces a spark. With a low charge in the condenser, the spark is weak and will not jump a wide gap. Set the plug gap to very little and the weak spark can jump the gap. The standard gap is .028. ....... I don't recall when Honda move the points to the flywheel but the images below may help if your bike is that style. Clean any rust on noted parts; magnets and pick up coils. Okay, now I have done my part. Now you gotta do yours; please rate my answer. Thanks! tombones49_177.giftombones49_178.gif

Jun 15, 2011 | 1972 Honda CB 100

1 Answer

Changed fuel pump. getting fuel to engine. but will not start.


Check for spark. Maybe a crankshaft position sensor is bad or a module.

Secondary Spark Test This spark tester looks just like a spark plug, attach the clip to ground and crank the engine to check for spark 91052p10.jpg
This spark tester has an adjustable air-gap for measuring spark strength and testing different voltage ignition systems 91052p11.jpg
Attach the clip to ground and crank the engine to check for spark 91052p12.jpg
This spark tester is the easiest to use just place it on a plug wire and the spark voltage is detected and the bulb on the top will flash with each pulse 91052p10.jpg
The best way to perform this procedure is to use a spark tester (available at most automotive parts stores). Three types of spark testers are commonly available. The Neon Bulb type is connected to the spark plug wire and flashes with each ignition pulse. The Air Gap type must be adjusted to the individual spark plug gap specified for the engine. The last type of spark plug tester looks like a spark plug with a grounding clip on the side, but there is no side electrode for the spark to jump to. The last two types of testers allows the user to not only detect the presence of spark, but also the intensity (orange/yellow is weak, blue is strong).
  1. Disconnect a spark plug wire at the spark plug end.
  2. Connect the plug wire to the spark tester and ground the tester to an appropriate location on the engine.
  3. Crank the engine and check for spark at the tester.
  4. If spark exists at the tester, the ignition system is functioning properly.
  5. If spark does not exist at the spark plug wire, perform diagnosis of the ignition system using individual component diagnosis procedures.
---
Ignition Coil Testing
  1. Remove suspect coil.
  2. Disable fuel pump by disconnecting inertia switch electrical connector.
  3. Reconnect the ignition coil electrical connector to the coil.
  4. Install spark tester 303-D307 (D81P-6666-A) or the equivalent.
  5. Crank engine while observing the tester.
  6. If a blue-white spark is not observed replace coil.
---
Removal & Installation To Remove:
  1. Remove the air cleaner outlet pipe if interfering.
  2. Disconnect the connector from the ignition coil. coilconn.gif

  3. Remove the bolt from the ignition coil. coilbolt.gif

  4. Remove the ignition coil on plug.
To Install:
  1. Install ignition coil on spark plug.
  2. Install ignition coil bolt. Tighten to 10 Nm (89 in. lbs.). coilbolt.gif

  3. Reconnect the ignition coil electrical connector. coilbolt.gif

  4. Install the air cleaner outlet pipe if removed earlier.
prev.gif next.gif

Oct 28, 2010 | 1999 Ford Crown Victoria

1 Answer

When car gets to operating temp it looses spark


Secondary Spark Test This spark tester looks just like a spark plug. Attach the clip to ground and crank the engine to check for spark. 91052p10.jpg

This spark tester has an adjustable air-gap for measuring spark strength and testing different voltage ignition systems. 91052p11.jpg

Attach the clip to ground then crank the engine to check for spark. 91052p12.jpg

This spark tester is the easiest to use. Just place it on a plug wire and the spark voltage is detected; the bulb on the top will flash with each pulse. 91052p10.jpg

NOTE: The best way to perform this procedure is to use a spark tester (available at most automotive parts stores). Three types of spark testers are commonly available:
  • The Neon Bulb type is connected to the spark plug wire and flashes with each ignition pulse.
  • The Air Gap type must be adjusted to the individual spark plug gap specified for the engine.
  • The last type of spark plug tester looks like a spark plug with a grounding clip on the side, but there is no side electrode for the spark to jump.
NOTE: The last two types of testers allow the user to not only detect the presence of spark, but also the intensity of the spark. Orange/yellow is weak, blue is strong.
  1. Disconnect a spark plug wire at the spark plug end.
  2. Connect the plug wire to the spark tester and ground the tester to an appropriate location on the engine or frame.
  3. Crank the engine and check for spark at the tester.
  4. If spark exists at the tester, the ignition system is functioning properly.
  5. If spark does not exist at the spark plug wire, perform a diagnostic test of the ignition system using individual component diagnosis procedures.
Removal & Installation 2.0L Engine Ignition system components (Code AEG) vw-02-20-7054.gif

Ignition system components (Codes AVH, AZG, BEV) vw-02-20-7055.gif

prev.gif next.gifprev.gif next.gif

Oct 14, 2010 | 1998 Volkswagen Beetle

1 Answer

1997 pontiac grand prix gt stutters on take off


Check the coil packs and EGR:
Exhaust Gas Recirculation System Operation Application of the Exhaust Gas Recirculation (EGR) gases is regulated by the Powertrain Control Module (PCM). It is based on engine coolant temperature, engine speed, vehicle speed, throttle angle and Manifold Absolute Pressure (MAP). The operation of the EGR system is monitored by the PCM, which allows gases to flow at a calculated rate and compares it against MAP sensor and oxygen sensor activity. The PCM anticipates an increase in MAP voltage and an increase in O2 sensor voltage.
Electrically operated vacuum control solenoids used to control the flow of vacuum to the EGR valve, rely on pulse-width duty cycle commands from the PCM to control its operation. Using input values and the operating conditions previously mentioned the PCM completes the electrical circuit for the solenoid to allow vacuum operation of the EGR.
In addition to solenoids controlling vacuum flow, the incorporation of a back pressure transducer regulates vacuum signals independently of electrical signals. When back pressure in the exhaust system is low, the transducer pintle is open and manifold vacuum is allowed to bleed off. As back pressure increases the amount of vacuum allowed to bleed off is reduced resulting in more vacuum being applied to the valve. This allows air pressure to open the valve.
The following symptoms can be caused by a faulty EGR valve due to loose connection, bad grounds, high resistance in the circuit, or opens in the circuit.
Related Symptoms
  • Stalling on deceleration
  • Stall at idle
  • Surging off idle
  • Unstable idle
  • Running rough off idle
  • Hesitation
  • Stumble
  • Chuggle
  • Low idle
  • Poor fuel economy
  • Spark knock
  • Stalling on acceleration
---
coil packs:
Diagnosis and Testing Secondary Spark Test These spark tester looks just like a spark plug, attach the clip to ground and crank the engine to check for spark 91052p10.jpg
This spark tester has an adjustable air-gap for measuring spark strength and testing different voltage ignition systems 91052p11.jpg
Attach the clip to ground and crank the engine to check for spark 91052p12.jpg
This spark tester is the easiest to use just place it on a plug wire and the spark voltage is detected and the bulb on the top will flash with each pulse 91052p10.jpg
The best way to perform this procedure is to use a spark tester (available at most automotive parts stores). Three types of spark testers are commonly available. The Neon Bulb type is connected to the spark plug wire and flashes with each ignition pulse. The Air Gap type must be adjusted to the individual spark plug gap specified for the engine. The last type of spark plug tester looks like a spark plug with a grounding clip on the side, but there is no side electrode for the spark to jump to. The last two types of testers allows the user to not only detect the presence of spark, but also the intensity (orange/yellow is weak, blue is strong).
  1. Disconnect a spark plug wire at the spark plug end.
  2. Connect the plug wire to the spark tester and ground the tester to an appropriate location on the engine.
  3. Crank the engine and check for spark at the tester.
  4. If spark exists at the tester, the ignition system is functioning properly.
  5. If spark does not exist at the spark plug wire, perform diagnosis of the ignition system using individual component diagnosis procedures.
prev.gif next.gif

Jul 13, 2010 | 1997 Pontiac Grand Prix

1 Answer

I have trouble starting the car it has spark current, gas pressure before injectors 50 psi ,the injectors has pulse ,compression good timing is good intake airflow good.the engine is a vg30 nissan maxima...


get a proper spark tester. it can look like the car has spark but it could be too weak to jump the spark plug gap. it needs a proper tester to make sure you have the 20,000 volts needed.

Jun 24, 2009 | 1991 Nissan Maxima

Not finding what you are looking for?
1973 Yamaha DT 360 Logo

731 people viewed this question

Ask a Question

Usually answered in minutes!

Top Yamaha Experts

Tom

Level 2 Expert

314 Answers

dhnguyen

Level 2 Expert

281 Answers

vince

Level 3 Expert

1214 Answers

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

Answer questions

Manuals & User Guides

Loading...