If you have a fuel pump under the car, then the fuel flow is from the tank to the pump and then through the filter to the engine (so the filter is in the high pressure side, basically protecting only the injectors). This setup can also be found under the 200 and 700 series.
The high pressure fittings you mention are probably the bit between pump and filter and from filter to the engine, those fittings are using banjo bolts with copper rings.

Since the high pressure pump is under the car, there will be another pump - though low pressure - inside the tank. The fix should be as simple as you assume.

Later models will only have one pump living inside the tank, in that case the whole fuel line will be under pressure.

Dear zimm3,

Hope you're well. That section of fuel hose is Volvo #1312257. It is available from a U.S-based Volvo dealer at about $35.

But any fuel-injection-rated fuel hose will do, if it is the correct diameter. If I recall correctly, the hose is 10mm internal diameter. Volvo VADIS - a superseded dealer parts/service database - does not provide the internal diameter of the fuel hose, only the length (in this case, 240 mm = 10 inches).

When the engine is off, the fuel in the hose is not under pressure. As the top of the fuel tank is above the hose's end, only the fuel in the hose will drain, once the hose has been removed.

Once you remove the clamps, the best way to separate the hose from the steel fitting at either end is to cut the hose parallel with its length, starting about three inches from each end of the fuel hose, i.e., well beyond the point where the steel fitting ends. So, if the knife's point "breaks through" the fuel hose's plastic core, the tip of the knife does not contact the steel and damage it.

Once the tip of the knife is into the hose's empty center, cut slowly towards the steel fitting. Once you've made a cut 1/2" long, insert the tip of a small, flat-bade screwdriver into the cut and turn the screwdriver 90 degrees. This puts the hose under tension. Then, use the knife to advance the cut towards the end of the steel fitting, advancing the screwdriver to keep the cut opening as wide as possible.

Once the steel fitting's end is "in sight", cut lightly length-wide along the fuel hose that surrounds the fitting. The goal is to use the tension on the hose - created by the screwdriver's tip widening the cut - to cause the hose to "snap" apart, when the length-wise cuts are deep enough.

This slow-but-steady approach allows you to remove the hose with little risk of damaging the steel fittings. Go very slowly when making these repetitive cuts in the hose, that surrounds the steel fitting: resist the urge to cut deeply on each pass.

The steel pipe - from the fuel tank towards the filter - even were it still available from Volvo - is not fun to replace.

You can lubricate the ends of the steel fittings with a bit of dish-washing liquid, to ease hose installation.

Hope this helps.

Yours faithfully,

Spook

Hi,

"Is this as simple as replacing the rubber line and clamps"

-> Yes. This just low pressure fuel line, from in-tank pump to main fuel pump underneath car. Replace with regular rubber fuel line.


"Is that line under pressure?" (ie. the line with regular clamps)

-> No pressure when engine off, however fuel will drip off when you disconnect this line. Be ready with something (eg. rubber plug, golf tee) to plug the line when doing repairs, otherwise dripped fuel smell could be overwhelming, interfering while you repair.


Amarin.