I had them ''on'' for 460 Km only (most of them in city traffic) but they caused me bad (long time) morning cold starts plus rise of fuel consumption so i removed them for inspection.

Factory air filter box with paper filter inside, clean MAP and air intake manifold, clean throttle, gasoline from the same gas station, low-middle rpm driving.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Yes i know that are some charts with spark plug photos but i want to hear your comments.

Felica 1300cc ,AMH 68 PS.

Did you gap the electrodes correctly to 0.8mm before fitting as those gaps look pretty big in the photos which would cause issues

Edited 10 April, 20224 yr by skomaz

1 hour ago, skomaz said:

Did you gap the electrodes correctly to 0.8mm before fitting as those gaps look pretty big in the photos which would cause issues

 

https://www.ngk.com/ngk-5464-bkr5eix-11-iridium-ix-spark-plug

 

Factory gap is .043" or 1.1mm for these iridium, 0.8mm was for Champion platinum.

 

3 hours ago, D.FYLAKTOS said:

 

https://www.ngk.com/ngk-5464-bkr5eix-11-iridium-ix-spark-plug

 

Factory gap is .043" or 1.1mm for these iridium, 0.8mm was for Champion platinum.

 

 

Isn't that just the gap as supplied from the factory though...   Which may not be the gap your car needs.

 

If it were me I would gap them at the prescribed 0.8mm for the car.

 

Other than that they look fine.

14 hours ago, D.FYLAKTOS said:

 

https://www.ngk.com/ngk-5464-bkr5eix-11-iridium-ix-spark-plug

 

Factory gap is .043" or 1.1mm for these iridium, 0.8mm was for Champion platinum.

 

 

You should use Brisk DR15TC or similar with 0.8mm gap, which are recommended by the manufacturer. In the past, I tried NGK BKUR5ET-10 with 1mm gap (also recommended in the service manual) and those caused misfires after some time. 

11 hours ago, skomaz said:

If it were me I would gap them at the prescribed 0.8mm for the car.

 

Can take the 0.8mm gap as a rule for this car? No matter what kind of spark plug we have (nickel-platinum-iridium etc) to use?

 

1 hour ago, Papez said:

You should use Brisk DR15TC or similar with 0.8mm gap, which are recommended by the manufacturer.

 

In the past, I tried NGK BKUR5ET-10 with 1mm gap (also recommended in the service manual) and those caused misfires after some time.

 

Brisk DR15TC is not on the list of Champion RC89PYC - Alternative spark plugs

https://www.sparkplug-crossreference.com/convert/CHAMP_PN/RC89PYC

 

I didn't like those NGK either

https://www.briskoda.net/forums/topic/491830-ngk-bkur5et-10-your-opinion-about-them/#elControls_5524007_menu

 

41 minutes ago, D.FYLAKTOS said:

Brisk DR15TC is not on the list of Champion RC89PYC - Alternative spark plugs

 

That's because DR15TC is a triple electrode plug. DR15YC, which has same parameters except for the electrode shape, is present in the list. 

DR15TC and RC89PYC are listed for Fabia OHV, too. 

Edited 11 April, 20224 yr by Papez

18 minutes ago, Papez said:

 

That's because DR15TC is a triple electrode plug.

 

The guy on the parts store suggest me Bosch triple ground electrode (i don't remember the code) but after of what happened to me with NGK i said No.

Can take the 0.8mm gap as a rule for Felicia? No matter what kind of spark plug we have (nickel-platinum-iridium etc) to use the gap must be 0.8mm?

 

3 hours ago, D.FYLAKTOS said:

Can take the 0.8mm gap as a rule for Felicia? No matter what kind of spark plug we have (nickel-platinum-iridium etc) to use the gap must be 0.8mm?

 

I'm not sure about that, most of prescribed plugs for the 136 engine are 0.7-0.8mm, but gap is not the only parameter that affects temperature rating, so it is hard to say which plugs are right without testing. That's why I'd keep plugs recommended by the manufacturer.

4 hours ago, D.FYLAKTOS said:

 

Can take the 0.8mm gap as a rule for Felicia? No matter what kind of spark plug we have (nickel-platinum-iridium etc) to use the gap must be 0.8mm?

 

 

I don't know for definite but would suggest yes as that will be the gap the system voltage etc. can cope with. 

The plugs look like what they are - new and city use.  If the gap was over large you' would probably have misfires especially with your more spirited driving.

 

When those plugs were first installed you was very pleased with them - 

"I change them today, first words of the mechanic "oh, these are good, now it revs better".  Small test from me (house to work): Yes indeed especially when the traffic light goes green and i start plus the sound of the engine at low-medioum rpm (not enough road for high rpm moving)."

 

"These are my previous Champion, only for 3175 Km on use but the majority of them on slow city traffic."

 

 

If you want to try to reduce the gap then it will be to 0.9mm - not 0.8mm - and you need to get the correct tool not the one you have now. -

"3. Gapping fine-wire spark plugs

While most NGK spark plugs are pre-gapped, there are occasions when the gap requires adjustment.  Care must be taken to avoid bending or breaking off the fine-wire electrodes.  NGK recommends a round wire-style or pin gauge gap tool to measure the gap.  If the gap must be adjusted, use a tool that only moves the ground electrode and does not pry between or against the electrodes.  NGK also recommends adjusting the gap no more than +/- 0.008” [0.2mm] from the factory preset gap." - https://ngksparkplugs.com/en/resources/5-things-you-should-know-about-spark-plugs

 

(Easy for me to copy and paste as we have been through this before.)

 

I do not think that the spark plugs are the issue of your longer warmer up time and higher idle from cold start, I would have thought it more likely to be from -

• coolant temperature sensor, its wiring, connections or communication to the ECU, ECU, ECU remapping
• lambda sensor, its wiring, connections or communication to the ECU, ECU, ECU remapping.

 

ETA: I forgot to add - NGK BKR5EX-11 are a NGK upgrade plug to the 'Recommended' BKUR5ET-10, see link and attached PDF. - https://www.ngkpartfinder.co.uk/catalogues/cars/search/spark-plugs/SKODA/FELICIA/2001/13778/

 

NGK_Upgrades (1).pdf

 

 

Edited 12 April, 20224 yr by nta16

15 hours ago, nta16 said:

I do not think that the spark plugs are the issue of your longer warmer up time and higher idle from cold start

 

My last hope is the new NGK lambda with the stock Chanpion spark plugs that Skoda suggests.

If that combination does not work then 99% i am out of options. If it works then (maybe) i will try the iridium again but now with the Bosch lambda sensor i have excess fuel consumption.

Hopefully the correct NGK lambda sensor will help and you have also sorted your coolant temperature sensor and it wiring, connections and communications and the ECU and its communications are fine and ECU mapping suitable to what you want.

 

You can then find which plugs give you the most benefit.

 

When it comes time to renew your paper air filter you may decide to try another type of filter and before or after this discover whether the factory air filter housing warm air valve is best left as is or deactivated.

 

But all these steps should be taken one at a time and the results checked and confirmed at each stage individually.

 

they look perfect

On 14/04/2022 at 00:58, nta16 said:

new NGK lambda and NGK iridium plugs might be even better or at least a bit better, as you already have them it is no additional cost to try them on test. 

 

First of all i had to work for some kilometres and various conditions with the combination of factory Champion spark plugs and NKG lambda sensor identical to factory one.

IF (i say IF) the results are excellent then (and only then) i will give a second chance to iridium, otherwise i will give them as a gift to someone else, keep in mind that i have an old design motor (Euro II) and yes the iridium rev up better that platinum BUT the cold starts plus the city traffic fuel consumption get worst (Bosch lambda sensor).