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What is the fuel pressure-like device's purpose under the car

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
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Svenska
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Joined: Sun Nov 22, 2009 4:29 pm
Year and Model: 1995 850 GLT
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What is the fuel pressure-like device's purpose under the car

Post by Svenska »

RE:1995 850 non-turbo. I just discovered that I have a gas leak under the car that is coming from the vacuum/diaphragm/round shaped device that looks like a fuel pressure regulator. Volvo calls it a "fuel pressure pulse regulator". Mine is completely rusted and leaks. It is an obsolete part from Volvo. My question is, what does it really do? and can I remove it and put a piece of fuel line in its place? It goes to the metal fuel pressure rail on the engine. Any ideas?
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abscate
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Re: What is the fuel pressure-like device's purpose under the car

Post by abscate »

It, uh, regulates the fuel pressure. It's important. You should be able to get one off eBay or a junkyard.

Replacing it with straight hose is a bad idea.
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