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David Seger (Croakus)
Member
Username: Croakus

Post Number: 42
Registered: 06-2003
Posted on Saturday, September 27, 2003 - 01:58 pm:   Edit Post Delete Post Print Post

Okay, I put in a set of Bosch Platinum +4's about 5k ago because they were suposed to be the best. At first I had a slight gain in power but nothing to write home about. Now it's running rough and I have a serious loss of power. I have now been told that Bosch plugs are the worst you can buy. I'm putting the factory plugs back in.

What plugs have you guys used? What works well in a 4.0 Rover?
 

David Seger (Croakus)
Member
Username: Croakus

Post Number: 43
Registered: 06-2003
Posted on Saturday, September 27, 2003 - 05:09 pm:   Edit Post Delete Post Print Post

I put the stock plugs back in. The vehicle runs much better, but my service engine light is on and theres a sulpher smell from the exhaust.

Maybe the cats were just clogged?

Can anyone help me out here?
 

OLIVER CLOTHSOFF (Everythingleaks)
Senior Member
Username: Everythingleaks

Post Number: 319
Registered: 10-2002
Posted on Saturday, September 27, 2003 - 11:24 pm:   Edit Post Delete Post Print Post

disconnect the battery for 5 minutes, reconnect and start over. The Bosch +4 are the worst plugs I have seen yet for a rover. I have worked on 2 DII's that run like crap with these plugs in.
 

Geoff 93 RRC (Geoff)
Member
Username: Geoff

Post Number: 102
Registered: 11-2002
Posted on Saturday, September 27, 2003 - 11:41 pm:   Edit Post Delete Post Print Post

Sulphur smell usually means bad gas. I would burn through the tank and fill up somewhere else and reassess.
 

David Seger (Croakus)
Member
Username: Croakus

Post Number: 44
Registered: 06-2003
Posted on Sunday, September 28, 2003 - 03:27 pm:   Edit Post Delete Post Print Post

Thanks guys. I think I had a combination of bad gas and Bosch plugs. The power went out at my regular gas station and I had to fill up at a place I don't normally use.

And since no one has recommended an alternative to the Champion plugs I'll stick with those. I'll go with an exhaust change and K&N air filter for that extra power I was seeking.
 

Kelly Fristoe (Kfristoe)
Member
Username: Kfristoe

Post Number: 77
Registered: 12-2002
Posted on Monday, September 29, 2003 - 10:12 am:   Edit Post Delete Post Print Post

I have the regular Bosch Platinum in my 2000 D2. I have had no problems with them. All the research I got indicated the +4 thing is just a bunch of hype.

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