Power boost leak

garyiryna · 7th June 2021, 01:48

Seems my Rover 75 diesel, automatic, 2003, has a power boost leak.. one of 3 pipes. When climbing hills, need to put my foot on gas pedal, to floor. Is a power boost test at garage, cheap enough?? Its needs to be on ramp, rolling, to check it

COLVERT · 7th June 2021, 21:53

Could be the hose to the inter-cooler leaking pressure.

A garage should be able to tell you if your turbo does spool up OK.

MacRob · 7th June 2021, 22:18

A good chance the intercooler rubber O rings need replacing. the o rings sell for around £6 quid and its about a 30 min job to do yourself.
1 thing you can try without spending any money is to unplug the MAF and see if that makes a difference to boost performance.

Arctic · 7th June 2021, 22:24

I have a feeling that most if not all the above have recently been tested by Andy (Trikey) it seems that due to the engine bay being quite messy from a power steering failure, so full inspection is hard to undertake.

trikey · 7th June 2021, 22:56

That’s correct Steve, I changed the inlet manifold due to a small leak on the seam, replaced the intercooler o ring seals, changed some vacuum pipe from the egr solenoid that was a bit iffy.

The turbo spoils up fine and has no wear in the shaft, no black smoke at all, intercooler appears to be ok and I can’t see any damage to the intercooler hoses.

I’ll be taking another look when Gary has had the engine bay cleaned to see if I can pinpoint the leak (it sounds like a dump valve on a Subaru when the boost pressure drops off)

7th June 2021, 01:48	#1
garyiryna Newbie Rover 75 saloon Join Date: May 2010 Location: Cambridge Posts: 28 Thanks: 0 Thanked 0 Times in 0 Posts	Power boost leak Seems my Rover 75 diesel, automatic, 2003, has a power boost leak.. one of 3 pipes. When climbing hills, need to put my foot on gas pedal, to floor. Is a power boost test at garage, cheap enough?? Its needs to be on ramp, rolling, to check it

7th June 2021, 22:18	#3
MacRob Loves to post Rover 75 Saloon Join Date: Sep 2019 Location: Deal, Kent Posts: 264 Thanks: 44 Thanked 81 Times in 58 Posts	A good chance the intercooler rubber O rings need replacing. the o rings sell for around £6 quid and its about a 30 min job to do yourself. 1 thing you can try without spending any money is to unplug the MAF and see if that makes a difference to boost performance. __________________ MG Rover South East admin

7th June 2021, 22:24	#4
Arctic Give to Learn Freelander 2 Join Date: Aug 2010 Location: West Midlands Posts: 18,700 Thanks: 1,155 Thanked 6,407 Times in 3,874 Posts	I have a feeling that most if not all the above have recently been tested by Andy (Trikey) it seems that due to the engine bay being quite messy from a power steering failure, so full inspection is hard to undertake. __________________ Arctic Givology Learn to Give Everything is Achievable ad altiora tendo. Check out our Nano meet dates http://www.midlandsnanomeets.co.uk/ http://www.the75andztclub.co.uk/index.php?thepage=howto " You do the work , we supply the expertise "

7th June 2021, 22:56	#5
trikey Premium Trader Rover 75 Join Date: Nov 2010 Location: Devon Posts: 33,765 Thanks: 8,837 Thanked 14,831 Times in 8,030 Posts	Power boost leak That’s correct Steve, I changed the inlet manifold due to a small leak on the seam, replaced the intercooler o ring seals, changed some vacuum pipe from the egr solenoid that was a bit iffy. The turbo spoils up fine and has no wear in the shaft, no black smoke at all, intercooler appears to be ok and I can’t see any damage to the intercooler hoses. I’ll be taking another look when Gary has had the engine bay cleaned to see if I can pinpoint the leak (it sounds like a dump valve on a Subaru when the boost pressure drops off) __________________ Lest we forget..