Noise from high pressure pump?

daithevet · Jul 13th, 2020, 20:28

Hi,

At idle I've got a squeeky sort of rattle that seems to come from the right side of the engine, around the high pressure pump. Just a tickle of throttle and it goes away but comes back at idle.

I've changed the diesel filter and there's no change. The car starts and drives fine.

If the pump is bad enough to sound bad wouldn't it affect the starting?

Should I keep driving it or will that cause more damage?

Any advice would be great

Tannaton · Jul 13th, 2020, 23:15

Unheard of for it to be the pump - most likely tappets opening up with the lower oil pressure.

Tip: try removing the oil filler cap whilst the engine is running, if the same rattle gets louder then its tappets.

EDIT: The above assumes you have a 5 cylinder (Volvo) engine - if you have the 4 cylinder 1.6 or 2.0D then that tip won't apply as the oil filler is into the crankcase.

daithevet · Jul 15th, 2020, 13:30

Quote:

Originally Posted by Tannaton

Unheard of for it to be the pump - most likely tappets opening up with the lower oil pressure.

Tip: try removing the oil filler cap whilst the engine is running, if the same rattle gets louder then its tappets.

EDIT: The above assumes you have a 5 cylinder (Volvo) engine - if you have the 4 cylinder 1.6 or 2.0D then that tip won't apply as the oil filler is into the crankcase.

Thanks, and yes it's a 2012 D5

Taking the oil cap off doesn't change the squeaky noise. Worryingly the noise is now just before idle and goes away at idle. The DMF is in this area isn't it?

I did manage to get a video, I'll try and upload it

daithevet · Jul 15th, 2020, 13:42

https://photos.app.goo.gl/fbFJhGXnAcQCbYiR7

Hpoefully that works?

Tannaton · Jul 15th, 2020, 18:20

That works - but it's a new one on me, not sure what that is. Yes the DMF is at that end of the engine but that doesn't sound DMF like to me.

sellxc70 · Aug 12th, 2020, 11:34

Quote:

Originally Posted by daithevet

Hi,

At idle I've got a squeeky sort of rattle that seems to come from the right side of the engine, around the high pressure pump. Just a tickle of throttle and it goes away but comes back at idle.

I've changed the diesel filter and there's no change. The car starts and drives fine.

If the pump is bad enough to sound bad wouldn't it affect the starting?

Should I keep driving it or will that cause more damage?

Any advice would be great

There is a small vacuum valve on the brake booster that is leaking. Replacement is straight forward although you will need to remove the battery tray for access.

Part costs about £70.00 from Volvo.

Regards, Steve

37 RUBY · Aug 12th, 2020, 13:20

Hello, I've listened to your video and to me that noise is coming from the airbox.

Lift the airbox lid of to see if it changes.

If it is, tired hydraulic lifters are a common theme.

This forum user had similar https://www.volvoforums.org.uk/showt...=223589&page=2

If you read through it and note the update on post #11 it appears the noise in the airbox was solved by replacing the hydraulic tappets.

Good look with your quest and don't forget to update with the cure. Might help someone else in the future.

Jul 13th, 2020, 23:15	#2
Tannaton Bungling Amateur Last Online: Today 20:52 Join Date: Aug 2014 Location: Beverley, East Yorks	Unheard of for it to be the pump - most likely tappets opening up with the lower oil pressure. Tip: try removing the oil filler cap whilst the engine is running, if the same rattle gets louder then its tappets. EDIT: The above assumes you have a 5 cylinder (Volvo) engine - if you have the 4 cylinder 1.6 or 2.0D then that tip won't apply as the oil filler is into the crankcase. __________________ 2011 XC90 D5 Executive 2003 C70 T5 GT 2012 Ford Ranger XL SC 1977 Triumph Spitfire 1500 1976 Massey Ferguson 135 Last edited by Tannaton; Jul 13th, 2020 at 23:17.

Jul 15th, 2020, 18:20	#5
Tannaton Bungling Amateur Last Online: Today 20:52 Join Date: Aug 2014 Location: Beverley, East Yorks	That works - but it's a new one on me, not sure what that is. Yes the DMF is at that end of the engine but that doesn't sound DMF like to me. __________________ 2011 XC90 D5 Executive 2003 C70 T5 GT 2012 Ford Ranger XL SC 1977 Triumph Spitfire 1500 1976 Massey Ferguson 135

Aug 12th, 2020, 13:20	#7
37 RUBY Master Member Last Online: Yesterday 20:45 Join Date: Jun 2017 Location: Chesterfield	Hello, I've listened to your video and to me that noise is coming from the airbox. Lift the airbox lid of to see if it changes. If it is, tired hydraulic lifters are a common theme. This forum user had similar https://www.volvoforums.org.uk/showt...=223589&page=2 If you read through it and note the update on post #11 it appears the noise in the airbox was solved by replacing the hydraulic tappets. Good look with your quest and don't forget to update with the cure. Might help someone else in the future. Last edited by 37 RUBY; Aug 12th, 2020 at 14:17.

Jul 13th, 2020, 20:28	#1
daithevet Junior Member Last Online: Apr 9th, 2024 08:05 Join Date: Jul 2015 Location: Swansea	Noise from high pressure pump? Hi, At idle I've got a squeeky sort of rattle that seems to come from the right side of the engine, around the high pressure pump. Just a tickle of throttle and it goes away but comes back at idle. I've changed the diesel filter and there's no change. The car starts and drives fine. If the pump is bad enough to sound bad wouldn't it affect the starting? Should I keep driving it or will that cause more damage? Any advice would be great

Jul 15th, 2020, 13:42	#4
daithevet Junior Member Last Online: Apr 9th, 2024 08:05 Join Date: Jul 2015 Location: Swansea	https://photos.app.goo.gl/fbFJhGXnAcQCbYiR7 Hpoefully that works?

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