Rattle from front of diesel engine

chris28274 · 1st August 2015, 09:56

I have a 2005 75 diesel which has done only 60k miles. I know the mileage is genuine. When starting from stone cold in the morning, there is a loud "timing chain" sort of noise from the front which takes a few minutes to disappear. The noise is much less, or even absent, when starting thereafter during the rest of the day. On restarting after an hour of standing, there is no noise: after a few hours a bit of noise. Any advice please?

spyder · 1st August 2015, 10:08

The usual culprit is the crank pulley or water pump. Having said that your symptoms sound slightly different, in that it is usually always there at low revs whether hot or cold.

Pour some water over the pulleys and see if the sound abates for a while-if it does it is the crank pulley.

It may also be a work belt and/or a combination of other work pulleys.

Do a search on diesel crank pulley as there are some videos about as well. I have only heard of 2 occasions when the actual timing chain was at fault.

Craig.

ProfDave · 1st August 2015, 10:35

Bit of a curve ball but worth checking the tightness of your alternator adjuster and fixings; on my old CDTi tourer one came loose and started making a weird jangling noise which took me weeks to source!

1st August 2015, 09:56	#1
chris28274 Newbie Rover 75 diesel aoto Join Date: Nov 2007 Location: Guildford Posts: 22 Thanks: 0 Thanked 0 Times in 0 Posts	Rattle from front of diesel engine I have a 2005 75 diesel which has done only 60k miles. I know the mileage is genuine. When starting from stone cold in the morning, there is a loud "timing chain" sort of noise from the front which takes a few minutes to disappear. The noise is much less, or even absent, when starting thereafter during the rest of the day. On restarting after an hour of standing, there is no noise: after a few hours a bit of noise. Any advice please?

1st August 2015, 10:08	#2
spyder This is my second home 75 CDT Auto Tourer , Rover 45 , Astra, Zaffira, Chev Captiva Join Date: Mar 2011 Location: Wilts Posts: 3,342 Thanks: 203 Thanked 436 Times in 360 Posts	The usual culprit is the crank pulley or water pump. Having said that your symptoms sound slightly different, in that it is usually always there at low revs whether hot or cold. Pour some water over the pulleys and see if the sound abates for a while-if it does it is the crank pulley. It may also be a work belt and/or a combination of other work pulleys. Do a search on diesel crank pulley as there are some videos about as well. I have only heard of 2 occasions when the actual timing chain was at fault. Craig. __________________ Chrome skull caps, EGR cleaned (original housing), Mondeo lower mounting, 12V outlets in the armrest and tourer boot, cat fixed, working FBH, Lidl plenum covers, DD with reverse camera.New speakesr/Tweeters with MDF rings. wood dash, Memory leather seats, wooden finished steering and handbrake, Xenon headlights.

1st August 2015, 10:35	#3
ProfDave This is my second home ZTT, Contemp Saloon, Duotone Tourer Join Date: May 2012 Location: Llandeilo Posts: 4,192 Thanks: 290 Thanked 387 Times in 333 Posts	Bit of a curve ball but worth checking the tightness of your alternator adjuster and fixings; on my old CDTi tourer one came loose and started making a weird jangling noise which took me weeks to source!