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Gerty

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Reply with quote  #1 
I hope this is OK because it´s not a motorhome question [frown]. So pretty please :-

The Subaru Forester has a boxer diesel engine and since I have been here when the engine is cold it seems to make more din than it did at home. Do boxer engines have tappets? When the engine is warm the noise stops. 
Here I am parked under a car port, at home it out in the open summer and winter just in case you wondered.


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Pudsey Bear

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Reply with quote  #2 
All diesels are noisier at start up Jan, and under a car pprt it might reverberate more.
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Link to self build pictures

Link to sort of blog on facts


http://tinyurl.com/nzyry9n

2002 Bessacarr E745 Ducato
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Gerty

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Reply with quote  #3 
Not just under the car port Kev, it carries on until the blue light goes out which means the engine has warmed up enough to put the heater on.
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rayc

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Reply with quote  #4 
I may of course be talking complete rubbish  but perhaps it is due to the oil viscosity being thin when cold? The rating for the euro 6 Ducato is 0w30, 0w refers (I think) to the cold viscosity.  The lower the number, the thinner the oil for good flow at cold start-up.

https://www.castrol.com/en_gb/united-kingdom/home/car-engine-oil-and-fluids/engine-oils/engine-oil-viscosity-grades/0w-30.html
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Gerty

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Reply with quote  #5 
Quote:
Originally Posted by rayc
I may of course be talking complete rubbish  but perhaps it is due to the oil viscosity being thin when cold? The rating for the euro 6 Ducato is 0w30, 0w refers (I think) to the cold viscosity.  The lower the number, the thinner the oil for good flow at cold start-up.

https://www.castrol.com/en_gb/united-kingdom/home/car-engine-oil-and-fluids/engine-oils/engine-oil-viscosity-grades/0w-30.html


Never known you to talk rubbish Ray, thats my job [biggrin]

Its just had an oil change on October 10th

Mobil 1 ESP Formula Öl 5W -30 Longlife 3.
   &
Ölfilter

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BurtSner

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Reply with quote  #6 
Unless someone has a better option I’d agree with Puggley and it’s the carport making it seem louder. I’d also imagine all moseen vehicles will be hydraulic tappers. 
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Gerty

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Reply with quote  #7 
Quote:
Originally Posted by BurtSner
Unless someone has a better option I’d agree with Puggley and it’s the carport making it seem louder. I’d also imagine all moseen vehicles will be hydraulic tappers. 


Whats wrong with you, got a hangover or summat, I said it kicks up a shindy until the blue light goes out, in these temperatures is a few km. 8-10 km or maybe more before this happens and it clangs away till then.

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Gerty

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Reply with quote  #8 
Here is the oil used. It says 
Mobil 1 ESP 5W30

Features and Benefits
Mobile 1 ESP 5W-30 is a proprietary formulation of high performance components It has been formulated to be compatible with the latest diesel particulate filters (DPF) and catalysts (Kat) for gasoline engines. Mobil 1 ESP 5W-30 is designed to provide superior performance and protection in conjunction with enhanced fuel efficiency. Its main features and advantages include
 https://www.bandel-online.de/oeLE_ADDITIVE_und_CHEMIE/Motoroel/5W-30/5L_MOBIL_1_ESP_5W30_MOTORoeL_154294_SHC_Synthese_Technologie_i169_117580_0.htm?gclid=CjwKCAiA8ejuBRAaEiwAn-iJ3s_BVjlXdHqBcAajiRIbwS-G2IlmHgnVB9TwT8qpeNhDPmqVfO4OdRoC2YsQAvD_BwE

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eurajohn

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Reply with quote  #9 
First thought Jan is that you have / will confuse some people by using the term "boxer engine" rather than calling it a horizontally opposed engine.

This being a motorhome site, many will perhaps think you are referring to the Peugeot version of the Fiat Ducato which is called a Boxer, rather than the unit fitted to your car.

If the noise is louder until the blue light goes out it is possibly caused by the fuel enrichment system which gives an artificially rich mixture for cold starts and initial running.


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Gerty

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Reply with quote  #10 
Quote:
Originally Posted by eurajohn
First thought Jan is that you have / will confuse some people by using the term "boxer engine" rather than calling it a horizontally opposed engine.

This being a motorhome site, many will perhaps think you are referring to the Peugeot version of the Fiat Ducato which is called a Boxer, rather than the unit fitted to your car.

If the noise is louder until the blue light goes out it is possibly caused by the fuel enrichment system which gives an artificially rich mixture for cold starts and initial running.


[biggrin] Boxer diesel
https://www.motortrend.com/cars/subaru/legacy/2008/subaru-boxer-turbodiesel-first-drive/

So are you saying it´s normal and I don´t need to worry?
I won´t survive another engine failure, one is driving me crazy.


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eurajohn

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Reply with quote  #11 
I wasn't suggesting you didn't know what type of engine you were referring to, that type of engine are commonly referred to as boxer engines because if you look at the cut away picture in your link you can see that it is a flat 4 cylinder horizontally opposed engine where when one cylinder piston is moving up, its opposite number is moving down, thereby giving the impression that it is boxing.

It's not uncommon for diesels on cold start to sound louder than normal, although not actually hearing yours previously or now can't offer a reassuring answer, quite possibly as others mention it is simply a different environment to what you were used to.

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Gerty

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Reply with quote  #12 
Right oh, I´ll stop worrying then.
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SANDBAGSID

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Reply with quote  #13 
Diesel engines usually sound like a bag of loose bolts in the cold weather I wouldn’t be worrying about it just turn ya radio up a bit more .👍
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Gerty

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Reply with quote  #14 
Quote:
Originally Posted by SANDBAGSID
Diesel engines usually sound like a bag of loose bolts in the cold weather I wouldn’t be worrying about it just turn ya radio up a bit more .👍


I don't have radio or music on much in the car or MH.

I have been driving it for over 9 years, we always said it was quieter than some petrol motors. It's only since the oil change I have just just realised.
Heike has to go to the same garage on Thursday, we will ask them to just have a look.
Thank you all for your answers. 😃

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SANDBAGSID

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Reply with quote  #15 
Have you checked the oil level on the dipstick just a thought jan.
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allan09

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Reply with quote  #16 
Hi Jan

I have a 2L boxer diesel in a Subaru Outback.

Mines done 75,000 miles and I have no problems with it. 

Mine makes a strange noise when cold (until blue light goes out) but its not a noise similar to yours. Mine is a bit of a whine. Always done it. I'm not bothered.

How many miles on yours?

TBH I've never been able to discern tappet noise, ticking or other terms often applied to this phenomenon so maybe not best place to comment.

As stated diesels are clattery when started and cold. I'd suggest if it sounds fine once warmed up dont worry. You seem to be suggesting this is a new noise since you moved? Is the current weather the coldest you've run it in over the last 9 years - I guess probably not. So it may be a "new " noise?

I did a quick google but couldnt find when (if) subaru diesel valve clearance need adjusting. I used to have a 2.5 petrol Subaru and had the clearances done at 100,000 miles.

Have you got a trusted friendly mechanic who could listen to it for you?



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allan09

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Reply with quote  #17 
Quote:
Originally Posted by allan09
Hi Jan

I have a 2L boxer diesel in a Subaru Outback.

Mines done 75,000 miles and I have no problems with it. 

Mine makes a strange noise when cold (until blue light goes out) but its not a noise similar to yours. Mine is a bit of a whine. Always done it. I'm not bothered.

How many miles on yours?

TBH I've never been able to discern tappet noise, ticking or other terms often applied to this phenomenon so maybe not best place to comment.

As stated diesels are clattery when started and cold. I'd suggest if it sounds fine once warmed up dont worry. You seem to be suggesting this is a new noise since you moved? Is the current weather the coldest you've run it in over the last 9 years - I guess probably not. So it may be a "new " noise?

If its only started since the last oil chasnge check what type and viscosity of oil was used and if its the same viscosity as previous changes. And as said check oil level.

I did a quick google but couldnt find when (if) subaru diesel valve clearance need adjusting. I used to have a 2.5 petrol Subaru and had the clearances done at 100,000 miles.

Have you got a trusted friendly mechanic who could listen to it for you?



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coppo

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Reply with quote  #18 
You need a decent mechanic or garage to check it out

I have heard that when something does go wrong with the Boxer Diesel it can be a mechanical nightmare due to the design of the engine.
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Alanedwin

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Reply with quote  #19 
I had a forester diesel until last month. Always noisy until the little blue light went out. Great engine.
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Gerty

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Reply with quote  #20 
It's been a lot milder for 2 days, 9 instead of 3°c and it's nowhere near as noisy.
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