Using too much fuel...

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13 May 2023, 09:14 PM

#31

bunsofsteeeel

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Quote:

Originally Posted by Hawkeye D

Ok, that explains the extra heat, I know exhausts tick when cooling down, but mine is a bit extreme in my opinion and leads to the heat soak mentioned above. This could also explain why after I clean the inside of the PPP tailpipe, it's weeks before there's even a film of very very light soot build up in the tip.
Sadly can't get EGT on my PSI3.

The tick sound can be hot soot flying round inside the cat also, could be worth taking it off the car and having a look at it as much of a pain that is, that’s a shame might be worth doing a rolling road run there great for fault finding and cheap compared to booking it in to be looked at.

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20 May 2023, 02:21 PM

#32

Hawkeye D

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To put this into perspective, I'm doing around 13-14 mpg.
Mixed driving cycle, about 180 miles to a tank.

60 litre tank is 13.2 gallons.
180 miles to a tank is 13.6 to the gallon. Great. Not.

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20 May 2023, 03:32 PM

#33

Vxr2010

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just found this on a similar post of using too much fuel , I don’t know if it’s of any help ?

Resolution
Just to give a final update on this issue, it was a bad evap purge valve solenoid behaving erratically.

Replaced that and the issue never occurred again.

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20 May 2023, 06:40 PM

#34

Hawkeye D

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Quote:

Originally Posted by Vxr2010

I've not heard of this valve.....where is it? Is it somewhere on the charcoal cannister under the rear bumper?

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20 May 2023, 07:17 PM

#35

Don Clark

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Quote:

Originally Posted by Hawkeye D

I've not heard of this valve.....where is it? Is it somewhere on the charcoal cannister under the rear bumper?

It's on the front of the inlet manifold

underneath the purge valve

Last edited by Don Clark; 20 May 2023 at 07:20 PM.

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20 May 2023, 07:58 PM

#36

Hawkeye D

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Thank you Don / VXR
Wow those aren't cheap ....can I take it off and somehow test it with a basic multi meter?

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20 May 2023, 08:16 PM

#37

Vxr2010

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The symptoms on the post and your post sound similar , it may not be your issue , worth a used unit , or even a clean and see if it has an impact , a clean may not be a long term solution but maybe the right direction 👍

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