S40 V40: - Spark Plugs for S40 1.8 122hp 2003 yr LPG Liquid Injection

hotsteel · Jan 15th, 2019, 08:07

Hi all,
I have a question for S40 1.8 122hp from 2003 year.
The car is with a LPG system by Vialle with liquid Liquid Injection and I mostly drive it on LPG.
What are the suggested type of Spark Plugs by Volvo for this car?
Are there a type of plugs that you prefer for this engine driven with such LPG?

bimmer49 · Jan 15th, 2019, 20:14

As said many times elsewhere hotsteel, Denso Single core copper KPR20's are the best performing value for money a VOLVO LPG engine can have. At £10 for 4, you can't beat it.

hotsteel · Jan 16th, 2019, 08:54

Quote:

Originally Posted by bimmer49

As said many times elsewhere hotsteel, Denso Single core copper KPR20's are the best performing value for money a VOLVO LPG engine can have. At £10 for 4, you can't beat it.

Thanks for the response. I searched Denso's catalog for this part number but could not find it.
I found K20PBR - I guess this is what you mean, I will try them first.

As I am driving around 40000 km per year my issue is not that much
the cost of the plugs rather the performance and the consumption of the engine.

In the same denso site they are recomending IK20TT for LPG. Can anyone share
an opinion about their performance with an liquid injection LPG system?

magnuz · Jan 16th, 2019, 23:40

It's often said that lpg converted engines need a smaller gap setting on the plugs, so based on that, i would go with single ground electrode plug rather than multi ground electrode, so that you can adjust the gap yourself !

hotsteel · Jan 17th, 2019, 08:26

Quote:

Originally Posted by magnuz

It's often said that lpg converted engines need a smaller gap setting on the plugs, so based on that, i would go with single ground electrode plug rather than multi ground electrode, so that you can adjust the gap yourself !

Thanks for the advice. Is it valid also for lpg engines that are with liquid propane injection (like Vialle LPI)?

magnuz · Jan 18th, 2019, 19:40

May be worth asking in this section https://www.volvoforums.org.uk/forumdisplay.php?f=183 for more info on LPG, CNC, LNG, etc

Jan 15th, 2019, 08:07	#1
hotsteel hotsteel Last Online: Apr 29th, 2020 10:43 Join Date: Apr 2018 Location: Sofia	Spark Plugs for S40 1.8 122hp 2003 yr LPG Liquid Injection Hi all, I have a question for S40 1.8 122hp from 2003 year. The car is with a LPG system by Vialle with liquid Liquid Injection and I mostly drive it on LPG. What are the suggested type of Spark Plugs by Volvo for this car? Are there a type of plugs that you prefer for this engine driven with such LPG?

Jan 15th, 2019, 20:14	#2
bimmer49 Always listen & learn! Last Online: Mar 13th, 2023 19:32 Join Date: Dec 2013 Location: Winchester + Malaga	As said many times elsewhere hotsteel, Denso Single core copper KPR20's are the best performing value for money a VOLVO LPG engine can have. At £10 for 4, you can't beat it. __________________ 264 V8 5.0L V40 BiFuel, she's gone, she's dead......Oh well!

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Jan 16th, 2019, 23:40	#4
magnuz Ancient Last Online: Yesterday 17:03 Join Date: May 2012 Location: chesterfield	It's often said that lpg converted engines need a smaller gap setting on the plugs, so based on that, i would go with single ground electrode plug rather than multi ground electrode, so that you can adjust the gap yourself !

Jan 18th, 2019, 19:40	#6
magnuz Ancient Last Online: Yesterday 17:03 Join Date: May 2012 Location: chesterfield	May be worth asking in this section https://www.volvoforums.org.uk/forumdisplay.php?f=183 for more info on LPG, CNC, LNG, etc

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