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1995 850 turbo fails to start after head gasket replacemen

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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FLXC90
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Joined: 18 August 2014
Year and Model: 98 V70 T5
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Re: 1995 850 turbo fails to start after head gasket replac

Post by FLXC90 »

The oil in this case acts like an extra oil ring, it seals the top ring allowing the down stroke to draw in the charge, then allows compression. You REALLY need to do a compression test of your motor. How badly was the engine overheated before the HG change?, was there any scoring in the cylinder bores? The fact that it runs well while running is a good sign. Numbers though, gotta have them numbers!
Current Volvos:
1998 V70 T5, 112k sat 5 years, still in mechanical coma (finally at the top of the pile )
2004 XC90 T6 AWD: 186k, 60 on transaxle ( traded in )
1998 POS70 N/A: DD/training aid, 236k but really about 240k, I think...ABS module( passed on to son who sold it)

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