misfire

brianbrum · 13th December 2020, 13:46

engine appears to misfire and lose power on hard acceleration,causing gearchange judder,i lift foot slightly reapply gently car runs fine,any explanatio,remedy welcome

Yorkshire GOC · 13th December 2020, 14:23

Sounds like failing coil pack/leads to me.

Mike Noc · 14th December 2020, 08:27

Which type of engine Brian?

dattrike · 14th December 2020, 08:55

1.8 or 2.5 according to profile, my money is on the 1.8 😉😉

roverbarmy · 14th December 2020, 09:04

The leads were prone to literally "break down" on cars that had leads. The insulators that connect to the plugs drop to pieces. Make sure that you get all the debris out of the plug recesses before removing the plugs/leads or it ends up "down the plug hole" and into the cylinders when you remove the plug. A length of copper pipe sellotaped/duct taped on the end of a vacuum hose is great for cleaning it out before plug removal. ( a PITA to check on the rear bank of an early V6. A torch and a shaving mirror come in handy ).

A new set of plugs and leads from DMGRS cured my miss.

13th December 2020, 13:46	#1
brianbrum Newbie rover 75 saloon and mgzt 190 Join Date: Jan 2020 Location: birmingham Posts: 14 Thanks: 1 Thanked 0 Times in 0 Posts	misfire engine appears to misfire and lose power on hard acceleration,causing gearchange judder,i lift foot slightly reapply gently car runs fine,any explanatio,remedy welcome

13th December 2020, 14:23	#2
Yorkshire GOC I really should get out more....... Rover 75 connoisseur se v6 auto Join Date: May 2014 Location: Hull Posts: 2,061 Thanks: 1,842 Thanked 623 Times in 469 Posts	Sounds like failing coil pack/leads to me. __________________ She came off the Longbridge Line on 20-05-2003 The Silver Machine was the 13th of 160 Rover 75's to come off the production line that day and is the 100th of 527 Starlight Silver Rover 75 2.5 V6 Connoisseur SE Auto saloons listed in the build records produced world wide.

14th December 2020, 08:55	#4
dattrike Posted a thing or two V6 2ltr auto in copperleaf +CDTI Auto in Royal Blue on loan to Son Join Date: Jul 2010 Location: Tewkesbury, Gloucestershire Posts: 1,707 Thanks: 105 Thanked 476 Times in 267 Posts	1.8 or 2.5 according to profile, my money is on the 1.8 😉😉 __________________

14th December 2020, 09:04	#5
roverbarmy This is my second home Roverless + 1.7D Sportage Join Date: Aug 2014 Location: East Norfolk Posts: 7,048 Thanks: 729 Thanked 2,021 Times in 1,449 Posts	The leads were prone to literally "break down" on cars that had leads. The insulators that connect to the plugs drop to pieces. Make sure that you get all the debris out of the plug recesses before removing the plugs/leads or it ends up "down the plug hole" and into the cylinders when you remove the plug. A length of copper pipe sellotaped/duct taped on the end of a vacuum hose is great for cleaning it out before plug removal. ( a PITA to check on the rear bank of an early V6. A torch and a shaving mirror come in handy ). A new set of plugs and leads from DMGRS cured my miss. __________________ Oil in my veins!

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14th December 2020, 08:27	#3
Mike Noc This is my second home Rover 75 CDT Manual Connoisseur SE, Rover 75 CDT Automatic Connoisseur SE & a Freelander Td4. Join Date: Jul 2009 Location: Hampshire Posts: 11,543 Thanks: 3,470 Thanked 3,119 Times in 2,247 Posts	Which type of engine Brian?