how do you replace the fuel pressure damper on a 98 v70?
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1998 Volvo V70
Question: leaking fuel damper
Answer #1munkyrench November 11, 2009, 14:35Master
What part are you referring to? Is this the regulator on the fuel rail?
Replya6flyboy, November 11, 2009, 16:57Rookie
the name seems to be interchanged a lot,but it definitely the damper,it matches the part I ordered & it is attached to the back of the fuel rail.it seems to be held in just like the injectors.
Replymunkyrench, November 12, 2009, 14:04Master
OK, that's what I thought. It's been awhile since I've seen it, but I believe it is bolted to the fuel rail.
You would need to remove the two 10mm bolts holding the rail onto the intake manifold, then pull the rail out enough to get access to the bolts, then pull it out of the rail.
You may need to remove the fuel line clamps on top of the engine to pull up the rail. Getting the fuel hose off the regulator is fairly difficult, so be careful you don't damage the hose, or I recommend you replace that if you have it off, they tend to leak after 150K or so anyway.
Mind if I ask why you are replacing the regulator? I worked on these cars for many years and never saw one fail.
Replya6flyboy, November 13, 2009, 09:30Rookie
Thanks for the input.I don't know the reason for a regulator vice damper but this part does not have a fuel line connected to it.The only connection is to the rail,just like the injectors.The reason for replacement is that it is leaking bad enough that everyone notices a gas smell when I pull in.I've never worked around the injectors before,so I was hesitant to pull the whole unit out w/out checking on the forum.I get the idea that the injector o-rings should be lubed w/ vasolene before reassembly-do you agree?
Replymunkyrench, November 13, 2009, 11:16Master
You have a later version than the one I described. It doesn't have a fuel line, and it is just a damper. You still need to remove the rail and remove the metal plate that holds the injectors and the damper in. You shouldn't have to remove any fuel lines or the injectors, just the damper, and definitely use some vasoline on the o-rings (injectors too).