Spark Plug Fouls

For non German-speakers. We will try to discuss in your language here, preferably in English. Guest posts welcome.

Moderator: Moderatoren

Spark Plug Fouls

Beitragvon MichaelTorre » 19. Dezember 2018 03:35

Hello team,

I find that after three or four hundred miles the spark plug will be prone to fouling, and once it's fouled I find that it cannot be cleaned to be useful again. I am using NGK - B7HS. My parts vendor has offered a NGK iridium 1 range hotter with a resistor... B8HS. Is this logical? Spark plug colour pictured for your evaluation.

Thank you.
M.
Dateianhänge
20180512_101126.jpg

Fuhrpark: MZTS250/0,
Yamaha Standard 1100
MichaelTorre

Benutzeravatar
 
Beiträge: 61
Themen: 14
Bilder: 14
Registriert: 19. März 2015 18:06
Wohnort: Virginia, The Old Dominion
Alter: 63

Re: Spark Plug Fouls

Beitragvon hiha » 19. Dezember 2018 06:32

Hi M.
your plug looks good to me for the next 5000mls. B8HS is colder than B7HS, so you can try it without the danger overheating it. BR8HIX is the Iridium-type.
With unleaded fuel and (semi)synthetic twostroke-oil there is usually no plug-fouling. I use B8HS in my sidecar TS250/1,(mostly full throttle...) and didn't change the plug for more than 10.000mls (16.000km) without any problems.
There are several people telling, that iridiums do not work good in twostrokes. I love them in old fourstrokes, but never tried them in twostrokes,(except my '86 TY250-trials-bike) so I can give no recommendation.
If you feel that your bike has a high plug-consumption, my experience is, that there is a ignition problem. Mostly a weak spark, caused by a weak coil or bad points.

Cheers,
Hans
Zuletzt geändert von hiha am 19. Dezember 2018 08:07, insgesamt 1-mal geändert.

Fuhrpark: Viel zu viele verschiedene Mopeds...
hiha

Benutzeravatar
 
Beiträge: 3580
Themen: 44
Bilder: 5
Registriert: 18. Dezember 2006 11:30
Wohnort: Neubiberg b. München

Re: Spark Plug Fouls

Beitragvon Moonlightchris » 19. Dezember 2018 06:52

Good description from hiha. Nothing to add.

Color looks nice. If u have ignition fault´s, look for the ignition way (wires, coals, capacitor(to old?), distance at at circuit breaker. and distance at the plug electrode., at least not enough fuel running through the carburator(but i dont think so)
Ich bin keene MEMME, denn ich fahre eene EMME !!!

Fuhrpark: MZ 250 ETZ solo(1983),MZ BK 350(1956)+ Stoye TML Beiwagen(1961), Ural Sportsman Gespann (2017)
Moonlightchris

Benutzeravatar
 
Beiträge: 491
Themen: 36
Bilder: 81
Registriert: 17. Juli 2012 20:33
Wohnort: 78713 Schramberg
Alter: 35

Re: Spark Plug Fouls

Beitragvon MichaelTorre » 19. Dezember 2018 11:55

Perhaps the 44 year-old coil is coming to its end.
M.

Fuhrpark: MZTS250/0,
Yamaha Standard 1100
MichaelTorre

Benutzeravatar
 
Beiträge: 61
Themen: 14
Bilder: 14
Registriert: 19. März 2015 18:06
Wohnort: Virginia, The Old Dominion
Alter: 63

Re: Spark Plug Fouls

Beitragvon hiha » 19. Dezember 2018 12:58

And never underestimate the capacitor. If you replace it, don't use a chinese-cheapo-crap-one. I don't know good ones in USA, but I'm shure your local old-timer-Harley-dealer can recommend one to you.

Hans

Fuhrpark: Viel zu viele verschiedene Mopeds...
hiha

Benutzeravatar
 
Beiträge: 3580
Themen: 44
Bilder: 5
Registriert: 18. Dezember 2006 11:30
Wohnort: Neubiberg b. München

Re: Spark Plug Fouls

Beitragvon EmmasPapa » 19. Dezember 2018 13:58

Hello Michael,

the spark plug actually looks pretty good, not a cause for alarm. But, are there any problems with the sparks or are there any interruptions?

Is the coil becoming very warm or hot in use? Did you turn on the ignition for a long time and the engine was off?

In case you would like to try a new coil, then try to find a ZS 215 from Beru like this one :arrow: http://www.auto-teile.com/ersatzteile/e ... 8229_0.htm. That was a wonderful remedy for my machine.

PS: Watch your postbox in the next few days (or weeks :gruebel: ). Wishing you happy holidays and greetings to your family.

Best regards

Frank
Grüße

Frank

Bild
Klein - Ecklampenschweinchenliebhaber

Fuhrpark: vorhanden
EmmasPapa

 
Beiträge: 1706
Themen: 3
Registriert: 21. Februar 2014 23:56
Wohnort: Nuthe-Urstromtal
Alter: 46

Re: Spark Plug Fouls

Beitragvon MichaelTorre » 21. Dezember 2018 23:25

Thank you for the suggestion about the new coil.

To answer your question.... when the spark plug is two or three hundred miles old if I happened to carelessly started with too much choke or stab to choke when I'm running just to see what happens... when the bike hesitates or bogs due to excess fuel, it starts misfiring at low RPMs so I have to ride bike at high RPMs so it doesn't die.
If it does die then I cannot started. Then I have to change plug in the middle of traffic.

Coil is warm, not hot when underway.
I do not leave key on without running. Always use German source parts. False economy to try to save pennies.

A parts vendor provided me with an iridium plug that has a resistor. I know resistor can raise the discharge voltage a little bit. I hope it does not strain the old coil.

I will do a voltage drop, over my connections for ignition circuit, and ohm check the coil.

But the coil you suggested does look pretty. I'm am concerned that I am not using Beru plugs....

M

-- Hinzugefügt: 21. December 2018 16:33 --

Sunday the 16th of December

-- Hinzugefügt: 21. December 2018 16:35 --


Fuhrpark: MZTS250/0,
Yamaha Standard 1100
MichaelTorre

Benutzeravatar
 
Beiträge: 61
Themen: 14
Bilder: 14
Registriert: 19. März 2015 18:06
Wohnort: Virginia, The Old Dominion
Alter: 63

Re: Spark Plug Fouls

Beitragvon Moonlightchris » 22. Dezember 2018 07:24

Also u change the plug and the 2 minutes later she will run again for 1-2 miles or a bit longer and die´s again? till the next change or cool down? Than it sound for me that the capacitator is the one that u dont like.
Ich bin keene MEMME, denn ich fahre eene EMME !!!

Fuhrpark: MZ 250 ETZ solo(1983),MZ BK 350(1956)+ Stoye TML Beiwagen(1961), Ural Sportsman Gespann (2017)
Moonlightchris

Benutzeravatar
 
Beiträge: 491
Themen: 36
Bilder: 81
Registriert: 17. Juli 2012 20:33
Wohnort: 78713 Schramberg
Alter: 35

Re: Spark Plug Fouls

Beitragvon MichaelTorre » 23. Dezember 2018 20:11

Moonlightchris hat geschrieben:Also u change the plug and the 2 minutes later she will run again for 1-2 miles or a bit longer and die´s again? till the next change or cool down? Than it sound for me that the capacitator is the one that u dont like.


naa

it runs 300 to 400 miles.
M

Fuhrpark: MZTS250/0,
Yamaha Standard 1100
MichaelTorre

Benutzeravatar
 
Beiträge: 61
Themen: 14
Bilder: 14
Registriert: 19. März 2015 18:06
Wohnort: Virginia, The Old Dominion
Alter: 63

Re: Spark Plug Fouls

Beitragvon MichaelTorre » 28. Januar 2019 17:24

The TS250/0 is still acting out.

I have not found the cause to my concern yet but we will narrow it down.

I have noticed on a cold day that the idle hung up and didn't come down.

Checked the slide, and it was not sticking. Enricher (cold start) was seated correctly.
Idle was a normal burble after I changed a plug.
ohh-

forgot to say that MZ Stalled and would not start(same issue as in my previous post) put in the plug that stalled the bike in November, and drove another 25 miles, then went home.

The temperature was 8 Celsius on the road. Not bitter cold, but cooler than I normally go out in. As an aside the bike has a nice fat blue spark.

Somthings acting up...... I've noticed the problem manifest itself right from a cold start from Storage. If it doesn't run nice and crisp, from the get-go, but rather , smokey and blubbering (four stroking) I will be guaranteed to have trouble one mile up the road when it acts like it's loaded up and drowning finally stalling at the first stop and not restarting.

I do have a new Gusi condenser so maybe I will swap out the 45 year old condenser. points are new. wires cables new. :- )
M.

Fuhrpark: MZTS250/0,
Yamaha Standard 1100
MichaelTorre

Benutzeravatar
 
Beiträge: 61
Themen: 14
Bilder: 14
Registriert: 19. März 2015 18:06
Wohnort: Virginia, The Old Dominion
Alter: 63

Re: Spark Plug Fouls

Beitragvon daniel_f » 29. Januar 2019 21:30

I would change the condenser, like you mentioned. If the failure is still the same, change the ignition coil, like others wrote before.
Rundlampenschweinchenliebhaber-Clubmitglied Nr. 007

Genieße das Leben ständig, denn du bist länger tot als lebendig!

Fuhrpark: MZ ES 175/1 Bj. 1967, MZ ES 150 Bj. 1964, S51 B1-3 Bj. 1982, SR2E Bj. 1963
daniel_f

Benutzeravatar
 
Beiträge: 1893
Themen: 31
Bilder: 7
Registriert: 5. Juni 2012 10:07
Wohnort: Gottesberg
Alter: 33


Zurück zu Questions and Answers



Wer ist online?

Mitglieder in diesem Forum: 0 Mitglieder und 2 Gäste