Engine rattle

mikeh · 29th May 2010, 15:21

Hi,
Is it ok to run the engine with the vis motors removed?
Might help me identify/eliminate the source of the rattle.
Thanks, Mike.

Clickernick · 29th May 2010, 15:24

Noooo Definately not!!

The engine may start but you will have a runaway situation as air will go in the manifold were the vis's should be and you will have a shock!

You may have a loose/disconected power valve butterfly rod. Remove front vis (power one) and see if the connecting rod can be lifted up and down verticaly, if so it is probably disconected allowing the butterflys to rattle open and closed.
It should be pulled to the drivers/offside to replace the vis, allowing the actuator dog to engage in the slot of the connecting rod

mikeh · 29th May 2010, 15:30

ok, thank you.

rrobson · 29th May 2010, 16:52

good picture of the inside here.

http://www.the75andztclub.co.uk/foru...t=61192&page=2

as clikernick has said, dont run it while the motors are out.
if there is vertical movement on the arm, the manifold is pretty much dead. ic can safely be run while rattling, it wont cause any damage, but economy will be effected, and it wont be producint maximum power

29th May 2010, 15:21	#1
mikeh Regular poster Rover 75 Saloon Join Date: Nov 2006 Location: South Croydon Posts: 71 Thanks: 25 Thanked 2 Times in 2 Posts	Engine rattle Hi, Is it ok to run the engine with the vis motors removed? Might help me identify/eliminate the source of the rattle. Thanks, Mike.

29th May 2010, 15:24	#2
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	Noooo Definately not!! The engine may start but you will have a runaway situation as air will go in the manifold were the vis's should be and you will have a shock! You may have a loose/disconected power valve butterfly rod. Remove front vis (power one) and see if the connecting rod can be lifted up and down verticaly, if so it is probably disconected allowing the butterflys to rattle open and closed. It should be pulled to the drivers/offside to replace the vis, allowing the actuator dog to engage in the slot of the connecting rod __________________ 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; 29th May 2010 at 15:28..

29th May 2010, 16:52	#4
rrobson I really should get out more....... 75 tourer cdti, MG ZS 180, nissan terrano & 1.8t rover 25 Join Date: Feb 2010 Location: Pontefract Posts: 2,645 Thanks: 17 Thanked 295 Times in 218 Posts	good picture of the inside here. http://www.the75andztclub.co.uk/foru...t=61192&page=2 as clikernick has said, dont run it while the motors are out. if there is vertical movement on the arm, the manifold is pretty much dead. ic can safely be run while rattling, it wont cause any damage, but economy will be effected, and it wont be producint maximum power Last edited by rrobson; 27th July 2010 at 14:19..

29th May 2010, 15:30	#3
mikeh Regular poster Rover 75 Saloon Join Date: Nov 2006 Location: South Croydon Posts: 71 Thanks: 25 Thanked 2 Times in 2 Posts	ok, thank you.