Boating Logo

Related Topics:

m
margaretmoller Posted on Mar 11, 2018
Answered by a Fixya Expert

Trustworthy Expert Solutions

At Fixya.com, our trusted experts are meticulously vetted and possess extensive experience in their respective fields. Backed by a community of knowledgeable professionals, our platform ensures that the solutions provided are thoroughly researched and validated.

View Our Top Experts

I have a 1974 50 hrs johnson it turns over but does not get spark set cdi box new two coils new new primar bubble pipe new check all conections need help

If this is a 50 HP Johnson Marine, you may have trouble with the magnet or stator coil located below it.

1 Answer

Gary F

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.

Sergeant:

An expert that has over 500 points.

  • Expert 258 Answers
  • Posted on Apr 05, 2018
Gary F
Expert
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.

Sergeant:

An expert that has over 500 points.

Joined: Mar 21, 2016
Answers
258
Questions
1
Helped
66084
Points
672

5 Related Answers

Anonymous

  • 86 Answers
  • Posted on Nov 24, 2008

SOURCE: 2005 ktm 450 sx die while riding.

yes, you are correct, those are the two pieces that could solve your problem, but i would go first for your cdi, you may choose to have it tested first also, before you jump out to buy a new one.

Ad

Anonymous

  • 4 Answers
  • Posted on Jul 25, 2009

SOURCE: please help I have a 1980's model susuki dr 250

I have a 83 DR 250 and i'm not getting enough voltage to create a spark, all I can suggest is that you check your battery and make sure its at full flavour. Check and see if you are getting any voltage prior to the ignition coil (should be 18-35v). If you suspect battery then try clutching it as the alternator moving faster might give you enough to get her going. Also check all your connections and earths. Earth wires are often overlooked and can cause you just as many problems as the actives. So give that a go and get back to me mate. Cheers

Anonymous

  • 24 Answers
  • Posted on Aug 19, 2009

SOURCE: 2007 honda crf 100 No spark at plug

take a high impedance test light clip output coil side, and then touch primary trigger output while engine is cranking

Anonymous

  • 27 Answers
  • Posted on Sep 07, 2009

SOURCE: 15 hp johnson outboard misfiring

possibly c/shaft seal
ie induction collapse

Joe Stanton

  • 1154 Answers
  • Posted on Apr 24, 2013

SOURCE: My Rm 250 wont spark

The Voltage From The Stator To The CDI Should Be Around 40 Volts(AC) At Cranking Speed. Be Sure Your Meter Is Set For (AC) Not (DC). The CDI Changes The (AC) Input Voltage To (DC) Output Voltage To The Primary Terminal At The Coil. An Electrical Shock Hazard Exist If Stator Voltage Is Checked With Engine Running. Always Perform This Test At Cranking Speed (R.P.M.) For SAFETY. 120 Volts (AC) Can Be Present With Engine Running.

Ad

Add Your Answer

×

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

0helpful
1answer

I have a 2001 polaris magnum 325 . it starts and runs fine for about 15 minuets then lose spark let sit for 10 minuets and it will restart . ive replaced the stator ;coil ;voltage regulator;cdi box

check conections on new parts just had that deal new cdi had one wire that pushed out just enough to lose contact. sounds strange but it happens.
Mar 28, 2018 • Polaris ATV
1helpful
1answer

I have a 1974 50 hrs johnson it turns over but not getting no spark put new cdi box two new coils new primar bubble new gas lines checked all conections need help

IF this is a 50 Hp Johnson marine motor, you may have a problem with the flywheel magnet or the stator coil that is under it.
0helpful
1answer

Yamaha ttr90 no spark

Test the stator those go in them quite a bit
0helpful
1answer

Cutting old johnson 3/4 steel pipe. Need conection, to enable conection to new blue pipe

the best option is to follow the steel pipe back to the next threaded fitting. Then install an adapter to convert to the plastic.
0helpful
1answer

Low spark on one spark plug

Sounds like you need new wires.....but the cdi box could be working only on one cyl. also........I would try new wires first.....
3helpful
3answers
4helpful
2answers

No spark

Hi and welcome to FixYa,

To my understanding, the problem is 'no spark' yet the engine cranks. Generally, to consider are:
  • pulser coil (least likely);
  • ignition coil (likely);
  • interlocks (likely);
  • CDI (most likely).

Offhand, the CDI would be the main suspect. Since the CDI is sealed, it is not possible to do component level checks. The only way to check if the CDI is good is to check the external connections; if they are good and yet no spark, then the CDI is bad.

How to check the above:
  • to check the pulser coil, measure the low voltage coming from it using an analog/needle type AC voltmeter. While cranking, it should show a flickering low voltage;
  • to check the ignition coil, use a continuity tester. Primary should measure 3 ~ 5 ohms while primary to the high voltage end would measure 15 ~ 18 kilo ohms;
  • the ignition coil has 1 terminal connected to the IGN +12 while the other terminal is connected to the CDI. This should have a pulsating voltage when cranking.
  • all the interlocks could be checked with a continuity tester. Please note that most interlocks has a diode connected in series with their wires.
The interlocks include:
  • clutch switch;
  • side stand switch;
  • neutral light switch.

Good luck and thank you for using FixYa.
Not finding what you are looking for?

119 views

Ask a Question

Usually answered in minutes!

Top Johnson Boating Experts

Brad Brown

Level 3 Expert

19187 Answers

NOEL
NOEL

Level 3 Expert

8606 Answers

jws1013

Level 3 Expert

1713 Answers

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

Answer questions

Manuals & User Guides

Loading...