XR8 Knocking after oil change

Bolly · 06-05-2010, 02:07 AM

had the car serviced by a Ford dealership 3 weeks ago and it seems since the cold weather has been around the engine knocks for 2 secs when you first start the engine in the morning..turn it off and the restart it and its fine...
Or left standing for 2 hours which i tested tonight at 10pm.... (11degrees) ..same thing,..turn of the engine and retart,no probs.......
It sounds the same as when you replace the oil filter and the engine knocks till the oil filter fills up, but not as long... My thinking is that the valve in the oil filter is dodgy and the oil is bleeding out of it..
The car has only done 47,000kilo`s..
Cheers

Mr Hardware · 06-05-2010, 08:49 AM

chances are it's simply oil that's too thin and is draining out of the top of the motor and taking too long to reach the top again when you restart. Do a complete drain and flush and put some 15w40 or such in and see how you go.

Cam · 06-05-2010, 08:54 AM

What filter are you using....

RG · 06-05-2010, 09:02 AM

Let me guess, they've used a genuine Motorcraft filter?

If they have then that is your problem I reckon, I've always had this issue when using a Motorcraft Z89A or if someone decides that they can fit a Z9. Fitting a purolator filter always fixes this for me.

JK EX CHASER · 06-05-2010, 09:45 AM

Most damage done to motors is start up i suggest you replace oil filter as soon as possible.

XR8AU2121 · 06-05-2010, 09:49 AM

My Au 1 XR8 has done this on and off for the past 7 years or so, I have used different grades of oil and filters but is still does it. It is obviously an initial oil pressure thing but 80,000k later has not caused any problems. When I start it first thing I just make sure I don't rev it till the oil pressure gauge comes up to normal.

RG · 06-05-2010, 09:52 AM

Quote:

Originally Posted by XR8AU2121

My Au 1 XR8 has done this on and off for the past 7 years or so, I have used different grades of oil and filters but is still does it. It is obviously an initial oil pressure thing but 80,000k later has not caused any problems. When I start it first thing I just make sure I don't rev it till the oil pressure gauge comes up to normal.

Bet you if you changed from a Z9 to a Z89A filter you wouldn't have this problem anymore.

JK EX CHASER · 06-05-2010, 09:57 AM

Quote:

Originally Posted by RG

Bet you if you changed from a Z9 to a Z89A filter you wouldn't have this problem anymore.

RG is correct .

Mr Hardware · 06-05-2010, 02:20 PM

What are the differences between the Z9 and the Z89A, RG?

RG · 06-05-2010, 02:26 PM

Quote:

Originally Posted by Mr Hardware

What are the differences between the Z9 and the Z89A, RG?

Z89A is a half length Z9.

james22 · 06-05-2010, 03:13 PM

The reason we use the Z89A, is we cant fit a Z9 filter on (well not easily anyway- it fits but bloody tight). Oilcooler sandwich plate takes up half the room.

Bolly · 06-05-2010, 03:44 PM

Just checked the filter and its a AFL 1 MC Motorcraft..I think a Z9 are the same?
Rang up the Ford Dealership and they didnt argue the point about being a filter problem..Going in tommorrow..
Was serviced 3 weeks ago and there was no problems..till 3 days ago when i noticed a slight rubble of lack of oil from the engine only for a sec which i wasnt too worried about..Next day it was worse and last night while over a friends place for only 2 hours it really knocked for 2 secs..Stopped the engine and checked the oil level which was ok. On the way home oil pressure was normal so i figured it must be a faulty valve in the oil filter..The oil they use is pretty thin but ive had no problems till now..
Will see what happens with Javis Ford tomorrow..

sd1800 · 06-05-2010, 04:57 PM

Quote:

Originally Posted by RG

Z89A is a half length Z9.

Correct me if I'm wrong but the Z89A was designed to help boost oil pressure if the vehicle was fitted with a Oil Cooler wasn't it?

RG · 06-05-2010, 05:27 PM

Quote:

Originally Posted by sd1800

Correct me if I'm wrong but the Z89A was designed to help boost oil pressure if the vehicle was fitted with a Oil Cooler wasn't it?

I remember hearing something like that, main reason I thought was the space issue though.

CRAIGAU3220 · 06-05-2010, 10:33 PM

Quote:

Originally Posted by sd1800

Correct me if I'm wrong but the Z89A was designed to help boost oil pressure if the vehicle was fitted with a Oil Cooler wasn't it?

I think that's a urban myth started by the same bloke that started the one about 5.0L blocks breaking at the main caps.

RG · 06-05-2010, 10:55 PM

Quote:

Originally Posted by CRAIGAU3220

I think that's a urban myth started by the same bloke that started the one about 5.0L blocks breaking at the main caps.

Bolly · 07-05-2010, 01:30 PM

Just dropped the car off to Javis Ford and they are going to sit the car for 2 hrs..
They claimed they never had any problems with their Genuine Ford filters ( motorcraft)
I`ll wait and see what happens?

**gregaust** · 07-05-2010, 08:41 PM

I've found the genuine motorcraft filters the best over the years

Bolly · 09-05-2010, 02:29 PM

All fixed.. Javis Ford replaced the oil and the filter..
But this time they used 15w40 oil to replace the 10w40.. I would have not used 10w40 ... I asked if they used 10w40 on the last sevice and the said yes..I dont beleive they did, i ill never know
What oil do you guys use???

CRAIGAU3220 · 09-05-2010, 03:11 PM

I use 15/50w Motul 300V, Which is a 100% synthetic and overkill for my application. Bought a 20L drum of a mate (supa dupa price) after he discovered wasn't suitable for his flat tappet cam.

When Ive used it all will go back to a 15/40w semi syn.

AMB · 10-05-2010, 06:28 PM

Quote:

Originally Posted by Bolly

All fixed.. Javis Ford replaced the oil and the filter..
But this time they used 15w40 oil to replace the 10w40.. I would have not used 10w40 ... I asked if they used 10w40 on the last sevice and the said yes..I dont beleive they did, i ill never know
What oil do you guys use???

So which filter did they put back on? Short or long one?

Bolly · 12-05-2010, 12:06 AM

They still fitted the long one..Perfect now

madmelon · 12-05-2010, 08:10 PM

I know it's slightly off topic

but I'm about to change filters on my AUIII and was wondering if it's even possible to fit a Z9 with the cooler in place- it comes with the shorter one for a reason, surely...

Has anyone successfully fitted a Z9 (or equivalent- VO1, ROF1, OF1SL, HP2004, FL1A) to an 8 with a cooler?

Is it difficult

...or difficult

XR8AU2121 · 16-05-2010, 10:45 AM

I was talking to another AU XR8 owner the other day at the shops and asked whether he had ever had the 2 second knock on cold startup.
He said he was advised that if you use a Z9 oil filter to add and extra 500ml of oil. He said since doing that he hasn't had a problem. I added a bit extra oil the other day and so far it seems to work. Worth a thought. I will see how it goes into the future.

b2tf · 16-05-2010, 10:49 AM

AFL 1 is a Z9 for reference.

15w oil at a minimum in a Wheezer, I used to use Shell Helix and then Penrite and both were very good - never had an issue.