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2000 S70 AWD - Seafoam "Spray" treatment

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

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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Year and Model: 2000 S70 AWD
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2000 S70 AWD - Seafoam "Spray" treatment

Post by ryan29121 » Tue Aug 23, 2016 1:17 pm

I have been through tons of forums looking at the seafoam treatment for various Volvo models, which all seem to be slightly different than my model. Most other models mentioned in the forums make mention of the vacuum tree, which mine doesn't have. The other posts all seem to be using the liquid seafoam as well. I heard the "spray" seafoam is a less risky method as you dont have to worry about hydrolocking your engine. The spray method mentions to insert the straw end of the can right before the throttle module. The issue is that the throttle module is bolted below the intake manifold and is not accessible. There is a hose going to it that is accessible from the top. See below for a picture of my engine and where this access is. My question, would the seafoam spray make it through the hose, throttle body, and to the engine from this distance? Any other suggestions? Thanks in advance for your help!

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