Checked with dealer, it takes the 26mm reach plug. It had been running for quite awhile with short plug!
Still have misfire, moving coils to isolate which one is suspect.
Thanks for your help!
Get email notification of topic replies. Log in or register (free). Amazon Link Buy anything with this and it helps MVS!
Wrong spark plugs?
- pgill
- Posts: 389
- Joined: Mon Aug 27, 2018 5:42 pm
- Year and Model: 2010 S80, 2008 LR2
- Location: California
- Has thanked: 29 times
- Been thanked: 46 times
Re: Wrong spark plugs?
If it were me I would try using the Denso TT plugs
Denso (4704) IKH20TT
I switched to Denso TT plugs for my Audi 2.0T because the Denso Plugs worked so well in my two Volvo engines
The idle and throttle response with the TT plugs is so much better.
Based on my research the big advantages of the TT (twin Tip) plug are the resistance to quenching the flame and the consistency of flame initiation.
One consideration is the heat range.
For Denso a higher number indicates a plug that can handle higher temperatures
If you are getting misfires is it during wide open throttle climbing a hill or is it at idle?
A high load misfire may require a colder (higher number then 20) spark plug
A misfire at idle or while cruising is a perfect candidate for the IKH20TT
Check the data when the miss fire was detected using an ODBII code reader
Good luck
Paul
Denso (4704) IKH20TT
I switched to Denso TT plugs for my Audi 2.0T because the Denso Plugs worked so well in my two Volvo engines
The idle and throttle response with the TT plugs is so much better.
Based on my research the big advantages of the TT (twin Tip) plug are the resistance to quenching the flame and the consistency of flame initiation.
One consideration is the heat range.
For Denso a higher number indicates a plug that can handle higher temperatures
If you are getting misfires is it during wide open throttle climbing a hill or is it at idle?
A high load misfire may require a colder (higher number then 20) spark plug
A misfire at idle or while cruising is a perfect candidate for the IKH20TT
Check the data when the miss fire was detected using an ODBII code reader
Good luck
Paul
Re: Wrong spark plugs?
This car was idling on 3 cylinders. The scan tool said 4,5 were misfiring. Replaced plugs and now only 4 is misfiring. Moved coil to 2, and now 2 is coming up ( P0302).
I will check those plugs out for my C30 T5. I had used in the past on watercooled VW’s a WR7DTC- triple electrode. I was surprised at the difference at idle/throttle response as you noticed too.
I will check those plugs out for my C30 T5. I had used in the past on watercooled VW’s a WR7DTC- triple electrode. I was surprised at the difference at idle/throttle response as you noticed too.
- RickHaleParker
- Posts: 5069
- Joined: Mon May 25, 2015 2:30 pm
- Year and Model: See Signature below.
- Location: Kansas
- Has thanked: 3 times
- Been thanked: 647 times
Re: Wrong spark plugs?
Before you toss the coil, try cleaning it's electrical connection. Also the metal pad under the bolt is a ground, make sure it is clean.
1998 C70, B5234T3, 16T, AW50-42, Bosch Motronic 4.4, Special Edition package.
2003 S40, B4204T3, 14T twin scroll AW55-50/51SN, Siemens EMS 2000.
2004 S60R, B8444S TF80 AWD.
2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0.
2003 S40, B4204T3, 14T twin scroll AW55-50/51SN, Siemens EMS 2000.
2004 S60R, B8444S TF80 AWD.
2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0.
-
- Posts: 1070
- Joined: Wed Jan 28, 2009 9:38 am
- Year and Model: S80 / 2005
- Location: Atlanta, GA
- Been thanked: 27 times
Re: Wrong spark plugs?
A handy little tool for these situations is a simple little thing called a Grip Scale. It’s a crochet hook looking thing that measures the depth of a hole and is usually marked in 1/16” or 1/32” increments. It may also be available in mm - I’m not sure.
https://www.usatco.com/item/GRIP%2BSCALES/Grip-Gauges/
https://www.usatco.com/item/GRIP%2BSCALES/Grip-Gauges/
-
- Similar Topics
- Replies
- Views
- Last post