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Gtir Motorsport club » Tech room » Help and Advice » Over fueling

Over fueling

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1Over fueling Empty Over fueling on 19th October 2019, 11:40 am

BEBB GTIR

BEBB GTIR
the one star club
the one star club
Anyone know we're auto choke is on the car, car sounds like a scooby when I drive down the road and no power, think it's over fueling due to standing for ages

Thanks

2Over fueling Empty Re: Over fueling on 19th October 2019, 6:38 pm

mike74

mike74
You could try unplugging the idle control gubbins under the inlet manifold and see if its any better. TBH, I doubt its that though. Have you checked the lambda operation by starting the car while doing a fault code check? Faulty fuel pressure regulator could also be a candidate. Have you got a fuel pressure gauge hooked up? If not id highly recommend installing one. It's the best 20 quid you'll spend on diagnostics.
Have you got an original or aftermarket bov? Some of them can leak and cause overfuelling...
Good luck with your fault finding Smile

3Over fueling Empty Re: Over fueling on 19th October 2019, 7:21 pm

BEBB GTIR

BEBB GTIR
the one star club
the one star club
Hi mike

Standard fuel regulator atm

HKS bov but got a spare to try

Car was alright last year but been standing since, cleaned distributor, fresh super unleaded fuel in her but made no difference, also unplugged each HT lead while car is running which made it worse not the same so don't think its spark plugs or leads but defo smell petrol in the garage to suggest to much fuel going in...

4Over fueling Empty Re: Over fueling on 20th October 2019, 1:45 am

Mr B

Mr B
gtir technician
gtir technician
Cold fuelling/idle controlled by ecu from coolant temp, idle via iav .
could be many things from temp sensor, slow closing injector, pressure regulator, maf sensor or wiring on any of these .

5Over fueling Empty Re: Over fueling on 20th October 2019, 7:09 am

BEBB GTIR

BEBB GTIR
the one star club
the one star club
Right ok thanks Mr B will have a look next week

6Over fueling Empty Re: Over fueling on 20th October 2019, 8:06 pm

mike74

mike74
Probably the good old faithful air leak

7Over fueling Empty Re: Over fueling on 22nd October 2019, 7:50 pm

johnny gtir

johnny gtir
moderator
moderator
What’s the plugs like after running a bit ?

8Over fueling Empty Re: Over fueling on 23rd October 2019, 5:33 am

BEBB GTIR

BEBB GTIR
the one star club
the one star club
Haven't looked yet Johnny will let you know

9Over fueling Empty Re: Over fueling on 26th October 2019, 12:22 am

Stu

Stu
Admin
Admin
Did you sort this?
It's usually the afm when the car has been standing for a long time.
If you take it out and give the element a spray with electrical spray it usually foes the trick.
Can you do a fault code check?


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10Over fueling Empty Re: Over fueling on 26th October 2019, 1:19 pm

BEBB GTIR

BEBB GTIR
the one star club
the one star club
Managed to sort out this morning

There was water in spark plug 1 half way up the ignition lead, fuck knows where this is from not coolant though so could be condensation or rain water running down intercooler?

Changed spark plugs and changed leads car runs a lot better

Thanks guys

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