Technical Correct spark plug for Marea 1.6 2001 (182.B6.000)

[MVirta]

The Hayes manual suggest Bosch FR8 D+ which only has one ground electrode. I have always used two electrode plugs.

Most of the sellers suggest based on the engine code plugs with one ground electrode. One offers NGK BKR6EKC (with two ge) which was installed by the Fiat service a long time ago.

Does it really matter if there is one or two ground electrodes?

 

[bugsymike]

The Hayes manual suggest Bosch FR8 D+ which only has one ground electrode. I have always used two electrode plugs.

Most of the sellers suggest based on the engine code plugs with one ground electrode. One offers NGK BKR6EKC (with two ge) which was installed by the Fiat service a long time ago.

Does it really matter if there is one or two ground electrodes?

This is what my trade Auto data manual recommends.

 

[jackwhoo]

No it does not matter only having one ground electrode most spark plugs only have one ground electrode.

 

[jackwhoo]

I would not just trust Haynes manual for correct plug.

Try ngk online catalogue for correct plug

 

[MVirta]

Probably the only difference between NGK BKR5EZ and BKR6EKC is that the first one has one ground electrode. It seems that the two ground electrode plugs are a little more expensive.

There are now two ground electrode Brisk plugs installed but they are not in production anymore. They have now done 43,500 km, so it is about the time to replace them. I just had the MOT test where the following exhaust emissions were measured:

CO%: 0,00
CO 2 : 14,90
HC ppm: 0
O 2 : 0,12
Lambda: 1,010

Those show the engine is in a good condition.

The maximum for those plugs is 45,000 km. About 90% of the driven kilometres were done at the 5th gear, so theoretically the plugs can still do several thousand kilometres...

 

[bugsymike]

Probably the only difference between NGK BKR5EZ and BKR6EKC is that the first one has one ground electrode. It seems that the two ground electrode plugs are a little more expensive.

There are now two ground electrode Brisk plugs installed but they are not in production anymore. They have now done 43,500 km, so it is about the time to replace them. I just had the MOT test where the following exhaust emissions were measured:

CO%: 0,00
CO 2 : 14,90
HC ppm: 0
O 2 : 0,12
Lambda: 1,010

Those show the engine is in a good condition.

The maximum for those plugs is 45,000 km. About 90% of the driven kilometres were done at the 5th gear, so theoretically the plugs can still do several thousand kilometres...

The numbers 5 and 6 in NGK spark plugs are for different heat codes. The R is just for resistor type plug, I used to have all the NGK books but now retired and most of my vehicles are diesel, so I haven't kept up.
After working for a Mazda Dealership for several years and finding them reliable I would only use NGK spark plugs after trying many other brands.

 

[jackwhoo]

I totally agree with Mike ngk plugs are excellent. Just get the recommended ngk plugs .

 

[MVirta]

Yes, I know there are hot and cold plugs, and probably some in between. So this means that the Fiat service installed a little colder plugs than recommended. That took place in the 40,000 km maintenance.

I still have the plugs, and one of them still looks quite nice after 41,700 km.

Naturally there are signs of worn.

 

[bugsymike]

Yes, I know there are hot and cold plugs, and probably some in between. So this means that the Fiat service installed a little colder plugs than recommended. That took place in the 40,000 km maintenance.

I still have the plugs, and one of them still looks quite nice after 41,700 km.

View attachment 465611

View attachment 465612

Naturally there are signs of worn.

I may be wrong , but to me it looks like slight burning at the electrodes indicating the need for a cooler running plug.
Any one else's thoughts?

 

[jackwhoo]

Hard to tell from the photo.

Goodness knows if the fiat garage followed correct procedure with plugs . Check eper for fiat part number then cross ref to ngk?

Just fit the ngk recommended plugs and look again after 10,000 miles.

 

[jackwhoo]

Bkr5ez is ngk recommendation from current ngk online part finder.

 

[bugsymike]

Bkr5ez is ngk recommendation from current ngk online part finder.

So that corresponds with my Auto Data manual.
Would there be any different heat code for Finland compared with UK?

 

[jackwhoo]

So that corresponds with my Auto Data manual.
Would there be any different heat code for Finland compared with UK?

I have no hard information on that. my thoughts are no the heat rating is most likely the same unless the thermostat opening temperature is significantly different. Heat rating mostly about the rate at which heat moves through the porcelain at the tip through the plug body into the cylinder head.
Which I'm sure Mike already knows(-:
Cheers
Jack

 

[MVirta]

Thanks for the comments.

Owner's manual recommends:

It is quite funny that Champion RC8BYC fits all the engine sizes but NGK BKR6EKC not the 20 valve engine...

 

[jackwhoo]

Thanks for the comments.

Owner's manual recommends:

View attachment 465700

It is quite funny that Champion RC8BYC fits all the engine sizes but NGK BKR6EKC not the 20 valve engine...

I think that handbook page is out of date but if you want a cooler plug than bkr5ez use bkr6ez.