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Which Spark Plug to use??

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo's stylish, distinctive "P2" cars.
2001 - 2007 V70
2004 - 2007 V70 R
2001 - 2007 XC-70
2001 - 2009 S60
2003 - 2007 S60 R

Which Spark Plug to use??

Postby 03xc70 » 18 Aug 2010, 15:25

I have a 2003 XC70 Turbo and need to change plugs. This should be a easy process especially after viewing the step by step pictures which are posted on this site. My regular mechanic told me the plugs would cost $75 plus installation cost. Checking my user manual it identifies plug type for Distributor Ignition System. Mine is not a distributor ignition system but operates on an ignition coil for each plug.

Can anyone tell me what type plug I should use and where I can purchase them??

Thanks for your help.
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Re: Which Spark Plug to use??

Postby skeeter123 » 18 Aug 2010, 16:43

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Re: Which Spark Plug to use??

Postby billr99 » 18 Aug 2010, 21:12

What does your owners manual say? Mine ('02 XC) says Champions and that is what I use or the equivalent NGKs. Both work great.

Cheers,

Bill
'02 V70XC (Ash Gray)-305K kms to-date
And a whole tonne of other Euro stuff (Volvo (7), VW (6), MB (1), Audi (3), BMW (2), SAAB (5), Land Rover (4), Porsche (2), Opel (1), MG (1), Mini (2), Sunbeam (1))
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Re: Which Spark Plug to use??

Postby jjaV70T » 19 Aug 2010, 01:42

The owners manual says Champion, ## i forgot,[model= '2003 V70 2.4T' I bought the car with Volvo plugs, replaced w/ Champ, then went back to Volvo. I like Champion by FAR..see your owners manual. BEST!
.2003, V-70,. 2.4T, 101,100K..
.1985, 245T,.sold at 280K....
.1974, 145, sold at 250K....
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Re: Which Spark Plug to use??

Postby pwhisler » 19 Aug 2010, 21:46

Hi, I have a 2002 S40 1.9T, I went to the auto parts shop, asked for some plugs, they gave me some "autofire" ones. I noticed that they were gaped at like .04 instead of the recommended .028, I put them in anyway, and the car was really shaking, like it was misfiring. I put back in the old official volvo ones, and it was back to normal.

So my question is, is the shaking more from the gap, or the inferior plugs? Should I try to get the OEM plugs, or try to gap these autofire ones at the correct distance?
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Re: Which Spark Plug to use??

Postby priapism » 20 Aug 2010, 23:24

Def need to set the gap in your plugs.

The OEM plugs in my gf's S60 are Volvo-branded Denso plugs. I put some NGK Iridiums in there and they seem to work well.
Titan LE : S60 2.4t : 91 325i : Spec E30 #33
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Re: Which Spark Plug to use??

Postby pwhisler » 23 Aug 2010, 02:35

so i gapped those autolight ones and put them back in, and it ran ok at first, but then got worse and worse. At first just would idle rough, then infrequently would misfire, then it would pretty bad.

i guess i buy some new ones... how important are plug wires? do i need to replace those for the 60k mile service?
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Re: Which Spark Plug to use??

Postby priapism » 23 Aug 2010, 19:26

Isn't the motor direct fire? So no plug wires?
Titan LE : S60 2.4t : 91 325i : Spec E30 #33
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Re: Which Spark Plug to use??

Postby Volvofix1 » 23 Aug 2010, 20:55

Always use OE plugs from the dealer otherwise you will have strange problems, also use a little never sieze on them. We have fixed many problems doing this and the dealers price is reasonable, make shure you torque them properly. Trust me .
Dick K. from Fla.
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Re: Which Spark Plug to use??

Postby ChiNorm » 26 Aug 2010, 16:28

Since '93, the feedback is always that this motor is sensitive to which plug is used. You cannot go wrong, and you likely can't do better, than the OEM plug. Rather than the stealership, get them from FCP or IPD.

Good luck.
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Re: Which Spark Plug to use??

Postby pwhisler » 02 Sep 2010, 22:51

yea, i got some from ipd for like 23 bucks or something instead of 50 something from the dealership, and they work great!
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Re: Which Spark Plug to use??

Postby Checksix » 05 Sep 2010, 05:28

Another vote for OEM. Never had a problem!
01 V70 T5a 133K miles on 8/12
73 P1800ES 370K miles (RIP)
73 145 about 320K mile (gone with the "X" long ago)
59 Austin Healey Bugeye 2000cc Hemi 150HP
69 F100 (original owner) This truck will RUN FOREVER! (Sold for 2008 F250 diesel)
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Re: Which Spark Plug to use??

Postby endothrow » 05 Nov 2010, 15:07

I recently upgraded the Volvo OEM plgs with the NGK Iridium plugs and have noticed just a bit of difference in throttle (placebo) but I can tell you, it runs just a little louder/ rawer with the hotter plug. Barely noticeable, but I love it.
2002 Volvo S60 T5- K&N, Royal Purple fluids, OBX DP, Iridium Spark
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Re: Which Spark Plug to use??

Postby jjaV70T » 07 Nov 2010, 03:44

I believe you, I used Champion, same number as printed from the owners manual, and wow,,MPG were best but never over 65 then 100 mi per day, 28 mpg, 70K..
.2003, V-70,. 2.4T, 101,100K..
.1985, 245T,.sold at 280K....
.1974, 145, sold at 250K....
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