Bad piston rings

jp503 · 08-03-2012, 09:49 PM

Rebuilt 2001 2.5 after a timing belt mishap and a month later it starts smoking real bad. Did compression test, all cylinders at 200 psi, took heads and had new seals put in, Now with the piston and cylinder walls slightly exposed, how can you tell if rings need replaced? If at all.

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Mstolz · 08-04-2012, 10:50 AM

I don't think you can without removing the pistons. Maybe your valve seals are bad and dumping oil in the cylinder?

yarrgh · 08-04-2012, 11:21 AM

Leakdown test will tell you more. Do it.

...mishap?

08-03-2012, 09:49 PM	#1
jp503 Scooby Newbie Member#: 305565 Join Date: Jan 2012 Location: Gresham, Or Vehicle: 2001 rs impreza black	Bad piston rings Rebuilt 2001 2.5 after a timing belt mishap and a month later it starts smoking real bad. Did compression test, all cylinders at 200 psi, took heads and had new seals put in, Now with the piston and cylinder walls slightly exposed, how can you tell if rings need replaced? If at all. * Registered users of the site do not see these ads.

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08-04-2012, 10:50 AM	#2
Mstolz Scooby Newbie Member#: 317237 Join Date: Apr 2012	I don't think you can without removing the pistons. Maybe your valve seals are bad and dumping oil in the cylinder?

08-04-2012, 11:21 AM	#3
yarrgh Scooby Specialist Member#: 80465 Join Date: Jan 2005 Chapter/Region: RMIC Location: Aurora, CO Vehicle: 2001 2.5RS Black Diamond Pearl	Leakdown test will tell you more. Do it. ...mishap?