Changed the spark plugs today - some questions - Page 2

RN3212 · 24th April 2010, 20:48

It's always handy to have Copper Grease for Plugs,Battery Terminals,Brake Pad Backs and Bonnet Hinges.

Clickernick · 24th April 2010, 22:53

Every single bolt and screw that I remove goes back with a smear of copper grease, just makes so much sence to me.

Why stress out an ali thread with a steel bolt!!!!
For example:
Right hand upper engine mount bolts are 100Nm, Thats a lot of torque on the poor old Aluminium mount and friction at this level is sure to stress the threads. Copper grease will aleiveate the friction and make you feel good!!!!

BTW my 10 year old plugs were a bitch to remove cos the factory fitted them dry!!!

StevenWilliams · 25th April 2010, 07:47

I found I had a small increase in MPG after changing my plugs.

It was hard to tell if this was directly related to the plugs as the week after I changed the oil but this was clean and the plugs were not.

simonej · 28th April 2010, 11:37

Quote:

Originally Posted by StevenWilliams

I found I had a small increase in MPG after changing my plugs.

Just to add to this thread again, I've since done 400 miles in the car and have gained 3 mpg from changing the plugs! Exactly the same route, driving style etc... and got 32mpg total. Nice!

Clickernick · 28th April 2010, 11:54

In can concur with Simon as my trip to Gaydon with new plugs in was giving an average of 34.5 mpg as oposed to the usual 31 tops. I have a very light right foot and use cruise 60% of the time.

At least simons plugs were ----290's
My original plugs were Unipart!!

Lates · 28th April 2010, 15:48

Where did you find 7 bolts holding the coil packs in ? Just make sure you dont disturb ( or forget to reconnect ) the earth lead on the rocker cover.

Clickernick · 28th April 2010, 16:11

I think he removed the bracket bolt behind coil 2, fooled me as well!!

24th April 2010, 22:53	#12
Clickernick Posted a thing or two Rover 75 Connie SE Tourer Triumph Street Triple R Join Date: Aug 2009 Location: Bletchley, Milton Keynes Posts: 1,163 Thanks: 75 Thanked 91 Times in 65 Posts	Every single bolt and screw that I remove goes back with a smear of copper grease, just makes so much sence to me. Why stress out an ali thread with a steel bolt!!!! For example: Right hand upper engine mount bolts are 100Nm, Thats a lot of torque on the poor old Aluminium mount and friction at this level is sure to stress the threads. Copper grease will aleiveate the friction and make you feel good!!!! BTW my 10 year old plugs were a bitch to remove cos the factory fitted them dry!!! __________________ Real walnut interior. Original refurbished Forked Spokes 16” with Michelin Primacy 4 rubber, Pioneer AVH-Z9200DAB double din Wi Fi phone integration. Retrofitted twin front horns. 160 re-map. Revotec fan. Silicone intercooler hoses and ‘O ring’ replacement. Top hose thermostat. New walnut and smokestone steering wheel with cruise upgrade. Brembo Brakes. Ceramic coated rear Exhaust. L/engine mount, Hydramount, Bosch MAF. Focal Access Drivers and Focal Amp.

25th April 2010, 07:47	#13
StevenWilliams This is my second home Rover 75 Saloon 2.5 V6 British Racing Green. 81,000 miles and counting Join Date: Apr 2008 Location: Crawley, West Sussex Posts: 6,183 Thanks: 0 Thanked 2 Times in 2 Posts	I found I had a small increase in MPG after changing my plugs. It was hard to tell if this was directly related to the plugs as the week after I changed the oil but this was clean and the plugs were not. __________________ [SIGPIC][/SIGPIC] Rover 75 2.5 2000 Club SE. British Racing Green. MEMBER NUMBER: MMMDCCXXVI Looking for: 7 seater

28th April 2010, 11:54	#15
Clickernick Posted a thing or two Rover 75 Connie SE Tourer Triumph Street Triple R Join Date: Aug 2009 Location: Bletchley, Milton Keynes Posts: 1,163 Thanks: 75 Thanked 91 Times in 65 Posts	In can concur with Simon as my trip to Gaydon with new plugs in was giving an average of 34.5 mpg as oposed to the usual 31 tops. I have a very light right foot and use cruise 60% of the time. At least simons plugs were ----290's My original plugs were Unipart!! __________________ Real walnut interior. Original refurbished Forked Spokes 16” with Michelin Primacy 4 rubber, Pioneer AVH-Z9200DAB double din Wi Fi phone integration. Retrofitted twin front horns. 160 re-map. Revotec fan. Silicone intercooler hoses and ‘O ring’ replacement. Top hose thermostat. New walnut and smokestone steering wheel with cruise upgrade. Brembo Brakes. Ceramic coated rear Exhaust. L/engine mount, Hydramount, Bosch MAF. Focal Access Drivers and Focal Amp. Last edited by Clickernick; 28th April 2010 at 11:59..

28th April 2010, 16:11	#17
Clickernick Posted a thing or two Rover 75 Connie SE Tourer Triumph Street Triple R Join Date: Aug 2009 Location: Bletchley, Milton Keynes Posts: 1,163 Thanks: 75 Thanked 91 Times in 65 Posts	I think he removed the bracket bolt behind coil 2, fooled me as well!! __________________ Real walnut interior. Original refurbished Forked Spokes 16” with Michelin Primacy 4 rubber, Pioneer AVH-Z9200DAB double din Wi Fi phone integration. Retrofitted twin front horns. 160 re-map. Revotec fan. Silicone intercooler hoses and ‘O ring’ replacement. Top hose thermostat. New walnut and smokestone steering wheel with cruise upgrade. Brembo Brakes. Ceramic coated rear Exhaust. L/engine mount, Hydramount, Bosch MAF. Focal Access Drivers and Focal Amp.

24th April 2010, 20:48	#11
RN3212 Gets stuck in Rover 75 Classic SE 2.0V6 Auto Moonstone Green Join Date: Sep 2008 Location: Roscommon Posts: 839 Thanks: 315 Thanked 46 Times in 34 Posts	It's always handy to have Copper Grease for Plugs,Battery Terminals,Brake Pad Backs and Bonnet Hinges.

28th April 2010, 15:48	#16
Lates This is my second home Jaguar XE Join Date: Nov 2006 Location: Coventry Posts: 4,321 Thanks: 56 Thanked 59 Times in 55 Posts	Where did you find 7 bolts holding the coil packs in ? Just make sure you dont disturb ( or forget to reconnect ) the earth lead on the rocker cover.