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Author Topic: URGENT oil pressure stop engine  (Read 189184 times)

Offline doylebros

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Re: URGENT oil pressure stop engine
« Reply #495 on: March 29, 2016, 10:16:56 pm »
Oh  :sad1: I had it in my head that 2 bar was roughly right. Perhaps it will be better with the starter motor? Is there any hope in the fact that they were all roughly the same?
To tell you the truth Pesky I've never checked the value when hand cranking - if it does two full turns and it realigns with all my marks I go straight to the starter but don't I don't let it start!
Then I check if the oil light goes out and listen for mechanical noises I don't expect.
Then I go for cylinder values - personally I expect you to have to remove the head as I expect you'll get it running but rough in its running. However, that lets plenty evaluation to be undertaken and a realistic repair cost to be achieved.

Once again well done as a previous poster stated plenty would have given up by now  :happy2:

Offline Pesky jones

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Re: URGENT oil pressure stop engine
« Reply #496 on: March 29, 2016, 10:23:30 pm »
Well.... atmospheric is about 14.7 PSI. Mulitple that by the compression ratio of your engine... 9.8?


14.7*9.8~= 144psi

You've lost me, is that a good or a bad thing for me  :signLOL:

Oh  :sad1: I had it in my head that 2 bar was roughly right. Perhaps it will be better with the starter motor? Is there any hope in the fact that they were all roughly the same?
To tell you the truth Pesky I've never checked the value when hand cranking - if it does two full turns and it realigns with all my marks I go straight to the starter but don't I don't let it start!
Then I check if the oil light goes out and listen for mechanical noises I don't expect.
Then I go for cylinder values - personally I expect you to have to remove the head as I expect you'll get it running but rough in its running. However, that lets plenty evaluation to be undertaken and a realistic repair cost to be achieved.

Once again well done as a previous poster stated plenty would have given up by now  :happy2:

Thanks mate appreciate it. I don't want to let it beat me  :signLOL: I guess we'll see...

Next step put everything back together and compression test with starter motor, but with fuel pump fuse removed?

Offline doylebros

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Re: URGENT oil pressure stop engine
« Reply #497 on: March 29, 2016, 10:32:39 pm »
Just YouTube compression testing it will give you a how to.

Over 100psi and 10% of each other will mean it will run until tomorrow  :driver:

Offline rich83

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Re: URGENT oil pressure stop engine
« Reply #498 on: March 29, 2016, 10:34:09 pm »
 :signLOL: I dont know.

But I think thats roughly how you calculate what PSI you should be seeing on a compression test

Offline Pesky jones

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Re: URGENT oil pressure stop engine
« Reply #499 on: March 29, 2016, 10:45:06 pm »
:signLOL: I dont know.

But I think thats roughly how you calculate what PSI you should be seeing on a compression test

Oh, so like @Dan_FR says I should be seeing 150ish plus.

I'm just hoping that with the starter motor it makes that.

We'll see tomorrow if the girlfriend lets me have another evening  :signLOL:

Once again thanks for everyone's help, another bit of progress  :happy2:

Offline rich83

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Re: URGENT oil pressure stop engine
« Reply #500 on: March 29, 2016, 10:46:58 pm »
How many times did you rotate the crank to test compression?

Offline r5gtt

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Re: URGENT oil pressure stop engine
« Reply #501 on: March 29, 2016, 10:52:20 pm »
Never heard of a compression test being carried out by hand  :signLOL:
As doylebros said two full turns and if all lines up then crank it and yes with fuel fuse out if that makes you feel any better. if the plugs are out which they all should be when carrying out a compression test it won't start anyways :doh:

Offline Pesky jones

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Re: URGENT oil pressure stop engine
« Reply #502 on: March 29, 2016, 11:06:35 pm »
Er more then twice probably, but didnt actually count to be honest @rich83

As @r5gtt says it doesnt sound like its very common, so hopefully proper compression test will yield better results

Offline rich83

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Re: URGENT oil pressure stop engine
« Reply #503 on: March 29, 2016, 11:09:19 pm »
Looks like you are just gonna have to clench your teeth and try and crank it  :scared:

Offline r5gtt

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Re: URGENT oil pressure stop engine
« Reply #504 on: March 30, 2016, 12:02:09 am »
@rich83 he'll be fine and so will the car  :jumping:  :happy2:

I'll be reading this on the plane tomorrow night so make it good pesky  :smiley:

Offline doylebros

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Re: URGENT oil pressure stop engine
« Reply #505 on: March 31, 2016, 07:15:53 pm »
The easiest way possible for you but make sure there's nothing loose that can get sucked into the intake if you do it with the cover off and have nothing lying about in the engine bay tool wise etc.

Offline BenJ

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Re: URGENT oil pressure stop engine
« Reply #506 on: March 31, 2016, 08:21:04 pm »
Cable tie a thin sock or some tights over the intake in case you're afraid or likely to get something go in. Belt and braces and that :)

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Offline Pesky jones

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Re: URGENT oil pressure stop engine
« Reply #507 on: March 31, 2016, 10:39:05 pm »
Ok cheers guys will do.

Cam chain cover back on, rocker cover back on (took a little persuading with the rear hoses) and pcv back on.

But then this happened, I hardly touched it, honest!



Anyone know the part number, and how I go about attaching a new one at the lower connection below the manifold?


Offline Dan_FR

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Re: URGENT oil pressure stop engine
« Reply #508 on: March 31, 2016, 10:48:23 pm »
Just tape it up for now - very common - becomes incredibly brittle with age - around £20 from the dealer

Has the same type of squeeze to release type clip on the engine block although it is fiddly to get to. New pipe is a lot more flexible and can be routed around the HPFP pipes and fitted into place fairly easily
TFSI... Revo Stage 2+... . WMI.... VCDS HEX + CAN, MPPS, VAG Commander & VAG tacho - South Wales

Offline Pesky jones

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Re: URGENT oil pressure stop engine
« Reply #509 on: March 31, 2016, 10:51:15 pm »
Thanks dan will do.

Any tips on fitting new one?