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Renault Scenic 1.9 DCi 2002 - How much compression? - Fixed #

Posted by Shane Gray on December 17, 2013, 10:02 am

Year of Manufacture *: 2002
Engine Size and Code *: 1.9dci

Hi all,
Can you tell me how much compression I should get on each cylinder on the above?
Thanks
Shane

Re: RENAULT/SCENIC- How much compression?

Posted by Mark Carter <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1428' width='330' height='300' border=0 style='border:none;'> on December 17, 2013, 9:26 pm, in reply to "RENAULT/SCENIC- How much compression?"
Mark Carter

What reading are you getting and under what conditions?

Mark

Modern cars, Its all wizardry and witchcraft

Re: RENAULT/SCENIC- How much compression?

Posted by alan ganter <iframe src='https://members.boardhost.com/ukautotalk8/info/user=ukat3444' width='330' height='300' border=0 style='border:none;'> on December 17, 2013, 9:39 pm, in reply to "RENAULT/SCENIC- How much compression?"
Alan Ganter

The compression ratio is 19.1

i would expect over 300 psi

Re: RENAULT/SCENIC- How much compression?

Posted by shane gray <iframe src='https://members.boardhost.com/ukautotalk8/info/user=ukat3442' width='330' height='300' border=0 style='border:none;'> on December 18, 2013, 8:14 am, in reply to "Re: RENAULT/SCENIC- How much compression?"
Shane Gray

Hi,
Checking through glow plug holes from cold.
Im getting 380 +-30 psi .
Shane

Re: RENAULT/SCENIC- How much compression?

Posted by Ed Kaps <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT5536' width='330' height='300' border=0 style='border:none;'> on December 18, 2013, 4:44 pm, in reply to "Re: RENAULT/SCENIC- How much compression?"
Edward Kaps

Theoretically speaking.

It should be the CR x atmos pressure if the inlet is all clear. ie: 19 x14.7 = 279psi.

Check your compression gauge,--at that pressure your engine would run well on paraffin.

Re: RENAULT/SCENIC- How much compression?

Posted by Russell Davey <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT2748' width='330' height='300' border=0 style='border:none;'> on December 18, 2013, 6:29 pm, in reply to "Re: RENAULT/SCENIC- How much compression?"
Andy Davey

I'd be happy enough with that on a cold engine.

On just about any hot 4 cylinder diesel I'd expect to see 400 psi across all cyls.

Fixed #

Posted by Shane gray on December 21, 2013, 10:48 am, in reply to "Re: RENAULT/SCENIC- How much compression?"
Edited by board administrator December 21, 2013, 1:39 pm

Hi all

It turned out to be lazy starter , old one was turning about 50 rpm less. Amazing to think that's enough for slow start.

Thanks for advice
Merry Christmas
Shane

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