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post #248 of (permalink) Old 24th September 2012
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Re: Renault Laguna II 1.9Dci - Engines - Hesitation Cured after EGR cleaned

Originally Posted by Flyingleek View Post
Hello everyone, here's my story-

Megane 1.9dCi started to lose power when accelerating hard and the Diesel Heater light came on. I removed the EGR valve and cleaned it- it was filthy and the ports were almost completely blocked. After refitting and testing the car was still the same. I removed the EGR again and cleaned as much as possible of the sludge from the inlet manifold using the threaded bar with a washer technique (thanks whoever posted that).

Then I bought a can of 10k Boost Power Restorer. I was a bit sceptical- the way it's used is by spraying directly into the intake, after the mass flow meter with the engine running- one minute spraying followed by 10 minutes idling, repeat until can empty, then give it a good rev and drive for 10 mins.


The car is back to full power and the Diesel Heater Light never comes on.

After using the spray (19.99 from Halfords) and when I revved it there was a huge cloud of blue/grey smoke, after this cleared I drove it for 15 mins and was amazed- it felt like a new car again.

I hope this helps other people, I thought my turbo was packing up (megabucks) so a 20 can was worth a try- I'm so glad I did.

Hi I have the same problem,would you reccommend cleaning the egr ,before trying the 10k power boost cleaner ? some of the reviews on halfords website,havent mentioned cleaning the egr ,also on the halfords site they said theyve just used half a can..thanks very much for the advice

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