spark plugs

[09_K-9]

Just curious what make of plugs everyone is using. I currently have champion ra8ha. Would invest in some higher quality ones.

 

[francoblay1]

This subject has been discussed maaaaaaany times, start using the Search Engine and surf the subforums. Most here are using NGK.

Here: http://www.bigdogbiker.com/threads/best-spark-plugs-and-wires-to-use.57131/

 

[09_K-9]

Done that. Most are dead end links. Don't really want to search through 5 million posts. Bike is running off one for the 1st 30sec till it warms up. Just put in a new coil and wires. Wondering which plugs to match them with

 

[francoblay1]

Oh right, yes... since the software update we lost all old links.... the threads are there but the links to them do not work anymore....

Standby.... can´t remember the model number for the NGK.... will find out for you

 

[09_K-9]

Thanks man.

 

[francoblay1]

Here ya go, some reading for you.

Oh, what bike do you have? these below are for the 117 ci. The 107 ci are using a different plug, I think....


NGK DCPR7E

http://www.bigdogbiker.com/threads/ngk-spark-plugs.3360/

NGK (Iridium) DCPR7EIX

http://www.bigdogbiker.com/threads/what-sparkplug-and-model-do-you-run.38924/

 

[francoblay1]

Read this thread too, its quite informative: http://www.bigdogbiker.com/threads/show-me-your-spark-plugs.69229/

 

[BWG56]

Champion plugs, $1.50 ea and put a new set in every year or in my case when I change the oil, which is every year. This year I'll be lucky if I get 1K miles on it. I've been grounded for a couple months.

 

[09_K-9]

I think I'll try ngk iridium's. Bikes been kind of sluggish lately maybe I can wake it up

 

[heybaylor]

spark plugs are very seldom the problem of poor running.
If new plugs make it better , find out what is causing the plugs to fail .

Bad fuel mixture is the usual culprit, followed by bad fuel flow to the carb, or fuel injection.
air cleaners, manifold leaks, wrong exhaust. are next in line .
timing is very seldom off , (unless it is screwed with ) .

Original plugs in my pitbull ( over 6K)
18K on the Fatboy original
20+k on the sporty ( one change when I broke one).
All are v-twins

 

[09_K-9]

spark plugs are very seldom the problem of poor running.
If new plugs make it better , find out what is causing the plugs to fail .

Bad fuel mixture is the usual culprit, followed by bad fuel flow to the carb, or fuel injection.
air cleaners, manifold leaks, wrong exhaust. are next in line .
timing is very seldom off , (unless it is screwed with ) .

Original plugs in my pitbull ( over 6K)
18K on the Fatboy original
20+k on the sporty ( one change when I broke one).
All are v-twins

As stated in my earlier post, I want to run new plugs with my new coil and wires.

 

[09_K-9]

Here ya go, some reading for you.

Oh, what bike do you have? these below are for the 117 ci. The 107 ci are using a different plug, I think....


NGK DCPR7E

http://www.bigdogbiker.com/threads/ngk-spark-plugs.3360/

NGK (Iridium) DCPR7EIX

http://www.bigdogbiker.com/threads/what-sparkplug-and-model-do-you-run.38924/

Any chance you know the gap off hand? .40 I'm assuming

 

[francoblay1]

yup, .40

Here, in case you need it, I am attaching some Carb tips.

 

[09_K-9]

yup, .40

Here, in case you need it, I am attaching some Carb tips.

You're a hell of a guy, thanks

 

[BBChopper]

NGK, i wont run a champion in my mower!

 

[09_K-9]

Well, with the new dynatek coil, thunder volt wires and ngk iridium's k9's running better than ever. Both heads were running off the start. Throttle seemed more responsive too.

 

[headshothills]

I just got done battling a few things one of them was related to rear cylinder bad plug... At the end of it all, while the plugs made a big difference, I chose the E3's, it still wasn't 100%... From there I had the injectors cleaned, at idle the rear one was plugged up pretty good, the intake manifold was also a mess, which in turn also turned the IAC into a mess too which affected the idle and Off Idle Throttle response... After cleaning the injectors, IAC, intake manifold, new plugs, it's running way better...


Sent from my iPhone using Tapatalk

 

[09_K-9]

I just got done battling a few things one of them was related to rear cylinder bad plug... At the end of it all, while the plugs made a big difference, I chose the E3's, it still wasn't 100%... From there I had the injectors cleaned, at idle the rear one was plugged up pretty good, the intake manifold was also a mess, which in turn also turned the IAC into a mess too which affected the idle and Off Idle Throttle response... After cleaning the injectors, IAC, intake manifold, new plugs, it's running way better...


Sent from my iPhone using Tapatalk

Not completely sure yet since I haven't ridden it but just in the garage it seems like a different machine. My front plug was considerably darker than the back. I'm sure the coil or wire was to blame. Going to watch the plugs for the next month or so

 

[09_K-9]

Should mention the front jug was the one not running at start up.

 

[Sven]

Before I tune a bike, I need to chase the compression of each cylinder. I might read a low compression plug and it's sooty; thinking I need to rejet. However, I have no kinetic helping that fire off, it runs rich and the unspent is not fully burned, but goes black on my porcelain tip.

Best tip going is post #17