Spark plug burning

[macsd]

During my PM, i would normally replace the spark plugs. During my last PM after only less than 3000 km run, the spark plugs are all burned as in black with brown in the tip (parang corrosion) my mechanic changed it with a slightly used but it's still sparkling clean. Now after about 2000 kms run, all are burned again with even one of the plugs, loosing the electrode tip ba yun (not the bent portion). Now i replaced it with a brand new Bosch Super 4.
I knew it's not normal caus emy other cars would even last 20K km before i would cahnge spark plugs. Car is CRV 2000 model.

Question is, what would have caused my unusual burning of spark plug?
TIA

[ghosthunter]

Try checking and comparing the pictures and diagnosis of the sparkplugs at this website:

http://www.autohausaz.com/html/spark...lug-wires.html

[macsd]

thanks ghost. very informative that i even bookmarked the site. however, yung problem ng spark plug #3 ko isn't in the pics kc nawala totally yung center electrode when i pulled it out. the other 3 are normal as per pic 1 & 2.
where would you categorize kay yung #3, under melting or cracking as in pic 13 & 14 or it's a totally different story? thanks again.

[ghosthunter]

I might be tempted to say it might be #13 or even #17 from your initial description.

[Mile2]

This link may be of help to you. http://www.answerbag.com/q_view/710848

[voltscastillo]

are you using the correct type of sparkplugs?

although pwede yung bkr5e and bkr6 (ngk) sa b20z engine ng crv mo, the correct type is prefixed ZFRxxx. may subtle differences sila. i tried bkr5 sa crv ko nun medyo malakas yung amoy gas from the tailpipe when idling. lumakas din sa gas ng konti.

switched back to casa spec zfr ngks ok na ulit.

[macsd]

thanks volts, observe ko muna yung super 4 ng bosch na kinabit ko since bago pa naman. check ko condition after 1000km. if it's still bad, i'll try the ngk type u've mention.

ghost, sana nga 17 since it was a used set of spark plugs then and beside kung 13, dapat lahat ng spark plugs would have been affected not specific on #3 only. let's see how it goes since ang recommendation sa 17 is change spark plugs. do u think i need to go back to unleaded since i've changed fuel to xcs?

i'll observe lang muna & see how it goes.

[macsd]

update ko lang for the closure. checked my spark plugs yesterday, all is well naman after 1K+ km run. normal carbon on the tips kaya cleaned it with kerosene & brush. so far gas consumption is relatively normal as well.

i'll just do frequent cleaning and see how long this sets of spark plug would last.

[olidotcom]

hi mga sir. just wanted to ask assistance if my spark plugs are still good to use.. i checked the website for reference and i believe that engine good in regards sa sparkplug. but i also want to know if my plugs are still good for the next 15k run..

[JayL]

I replace my spark plugs regularly when I change oil at 5,000 km.

Just regular Denso or NGK spark plugs as per the car owner's manual. Cost for new plugs are not so expensive and if changed regularly can be recovered in terms of proper engine performance and mileage for the vehicle.

[niky]

hi mga sir. just wanted to ask assistance if my spark plugs are still good to use.. i checked the website for reference and i believe that engine good in regards sa sparkplug. but i also want to know if my plugs are still good for the next 15k run..

Those look normal. Reddish tips.

[aejhayl17]

what if a small amount of oil is present in the insulator before the metal casing of the sparkplug and at the very tip of the rubber of the ignition coil? valve cover gasket problem?

[speed unlimited]

Nang yayari pag worn out na iyong oil seal sa may sparkplug nagkakaroon ng traces ng oil sa spark plug sa nissan GA 15 minsan nagpalit na kami.

[oj88]

I replace my spark plugs regularly when I change oil at 5,000 km.

Just regular Denso or NGK spark plugs as per the car owner's manual. Cost for new plugs are not so expensive and if changed regularly can be recovered in terms of proper engine performance and mileage for the vehicle.

That often? I think if you have a good engine, spark plugs should still work like new well beyond 5,000km.

The removal of lead in fuels has allowed plugs to last anywhere between 30-50k kms or as high as 80-100k km (long-life iridium plugs) before they require a change.

Although, it is still a good idea to check and if necessary, clean the plugs every time the car is serviced.

[JayL]

That often? I think if you have a good engine, spark plugs should still work like new well beyond 5,000km.

The removal of lead in fuels has allowed plugs to last anywhere between 30-50k kms or as high as 80-100k km (long-life iridium plugs) before they require a change.

Although, it is still a good idea to check and if necessary, clean the plugs every time the car is serviced.

You're right on this. In my case I just spend the extra 340 pesos for the plugs each time I change oil. I just changed to Fully Synthetic now so it might be 7K or more before I put new ones again. I used Mag1 fully Synthetic.

I also do the change oil myself.



Just regular Denso Spark Plugs



Some of my friends change oil in my garage too and if they don't want to replace plugs then we have this spark plug cleaner using compressed air and blasting sand to clean the tips as well as the inside surrounding perimeters of the plug's firing end.

[olidotcom]

Those look normal. Reddish tips.

Sir Nicky, thanks for the reply. Do you think these plugs are still good for the next 10k run? btw, i have already changed bnew plugs. but if these are still good, ill keep them for backup purposes or maybe use them on my next PMS.

[niky]

Sir Nicky, thanks for the reply. Do you think these plugs are still good for the next 10k run? btw, i have already changed bnew plugs. but if these are still good, ill keep them for backup purposes or maybe use them on my next PMS.

Don't reuse old plugs. New plugs don't cost all that much anyway. You can keep them in case of emergencies, but not as regular replacements.

[olidotcom]

Don't reuse old plugs. New plugs don't cost all that much anyway. You can keep them in case of emergencies, but not as regular replacements.

gotcha! thanks again!