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VVT solenoid, misfire, lean condition, smell gas

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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abscate
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Year and Model: 99: V70s S70s,05 V70
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Re: VVT solenoid, misfire, lean condition, smell gas

Post by abscate »

The only oil there is from the cylinder head and top cover gallery flow, which is big job to remove and reseal the cam cover.
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1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 XC90-in-Red
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FireFox31
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Post by FireFox31 »

Perhaps I'll buy a smoke testing machine. I brought the car to a Volvo specialist and his smoke test said "significant leak at cylinder head, cylinders 1-3". But it doesn't say exactly where it was leaking. I may get more information running the test myself and looking carefully for the leak.

First, I'll pull off the intake and look at the PCV for an obvious failed connection. Trouble is, once I have it apart, I have to fix it because I must drive it home from the Makerspace that night. I have some PCV parts for the T5M on hand, thankfully.
FireFox31
Blue 2000 V70 NA manual, "the V70" - died, reborn, totaled, donated, stripped
Green 2000 V70 NA automatic, "the G70" - awaiting 2nd rehab
Black 2000 V70 NA automatic, "Geronimo" - rescued, rehabilitating
Blue 1998 V70 T5 manual, "the T5M" - awaiting rehab

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FireFox31
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Post by FireFox31 »

It looks like this car has a major fluid leak around the belt area of the engine. The leak is high enough to wet the exhaust manifold, coolant pipes, and belt cover up quite high. I don't think all of this is from my poorly tightened power steering tank clamps.

Is there any common source of oil leak in the belt area which would also cause cylinder 1 misfire, rough idle, air leak around cylinder 1-3 intake, coolant loss, and a constant chirping sound at idle? Abscate mentioned "cylinder head and top cover gallery flow". Where would I check to confirm that failure?

I plan to smoke test the car, then strip the belt and intake areas to clean oil deposits and look for the leak source. It would be a huge help if I had repair parts on hand for whatever I might find (since I do my work at a public garage and must drive home each night). Thanks for any thoughts.
Attachments
Base of engine belt area
Base of engine belt area
PXL_20230523_034259106.jpg (346.71 KiB) Viewed 342 times
Oil on engine rear right corner
Oil on engine rear right corner
PXL_20230523_035409752.jpg (400.05 KiB) Viewed 342 times
Oil (or PS fluid) around crankshaft
Oil (or PS fluid) around crankshaft
PXL_20230523_043814862.jpg (248.66 KiB) Viewed 342 times
FireFox31
Blue 2000 V70 NA manual, "the V70" - died, reborn, totaled, donated, stripped
Green 2000 V70 NA automatic, "the G70" - awaiting 2nd rehab
Black 2000 V70 NA automatic, "Geronimo" - rescued, rehabilitating
Blue 1998 V70 T5 manual, "the T5M" - awaiting rehab

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