Engine: D5: - V70 very inter power loss cured !!

hobbyhorse · Mar 28th, 2009, 22:05

This fault has been bugging me for a couple of years, it's been very intermittant & gives no fault codes : a sudden power loss in mostly second & third gear with no excess smoke from the exhaust. I think most of us are well aware of the weird & wonderful intermittant power losses caused by the fuel filter & the head scratching fault codes that arise from the fuel starvation; this next fault involves air starvation, hopefully this will help some people out:

The trusty D5

Cover removed

The inlet pipe to the turbo is not easy to reach but I'm determined to leave the top engine mount & crossbar in place

The turbo creates quite a high localised vacuum in the inlet pipework, the rubber inlet pipe has denatured & gone very soft. Under heavy boost the vacuum is sufficient to squash the pipe & stop the airflow. My paws are quite big, it's a bit of a struggle. I end up laying on the engine but that's cool 'cos I love this car

Luckily the jubilee clamps are moveable, nearly there now

The vacuum has crushed the pipe so hard it's split.

Notice the pipe is so soft I can easily squash it into a ball

The new pipe is very hard & I struggled to get the crankcase ventilation spigot in for 15 minutes before I cheated & gave the plastic body a chamfer with the Dremmel

Job done. It's been a bit of a tussle but I'm well pleased to have finally cured this fault, the car's never driven better. Also I've just got the all clear from a year long cancer scare. It's been a good day

pipe part No 30636854

Mar 28th, 2009, 22:05	#1
hobbyhorse Premier Member Last Online: Jan 26th, 2015 21:30 Join Date: Dec 2006 Location: Billericay	V70 very inter power loss cured !! This fault has been bugging me for a couple of years, it's been very intermittant & gives no fault codes : a sudden power loss in mostly second & third gear with no excess smoke from the exhaust. I think most of us are well aware of the weird & wonderful intermittant power losses caused by the fuel filter & the head scratching fault codes that arise from the fuel starvation; this next fault involves air starvation, hopefully this will help some people out: The trusty D5 Cover removed The inlet pipe to the turbo is not easy to reach but I'm determined to leave the top engine mount & crossbar in place The turbo creates quite a high localised vacuum in the inlet pipework, the rubber inlet pipe has denatured & gone very soft. Under heavy boost the vacuum is sufficient to squash the pipe & stop the airflow. My paws are quite big, it's a bit of a struggle. I end up laying on the engine but that's cool 'cos I love this car Luckily the jubilee clamps are moveable, nearly there now The vacuum has crushed the pipe so hard it's split. Notice the pipe is so soft I can easily squash it into a ball The new pipe is very hard & I struggled to get the crankcase ventilation spigot in for 15 minutes before I cheated & gave the plastic body a chamfer with the Dremmel Job done. It's been a bit of a tussle but I'm well pleased to have finally cured this fault, the car's never driven better. Also I've just got the all clear from a year long cancer scare. It's been a good day pipe part No 30636854 Last edited by hobbyhorse; Mar 28th, 2009 at 22:12.

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