Petrol in my golf - glow plug light ??

Petrol in my golf - glow plug light ??

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Lauren123

Original Poster:

29 posts

86 months

Sunday 19th August 2018
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Ok cut a long story short £20 worth of petrol was put in my 59 plate gold 1.6tdi. Realised after like 2 min of driving and revs going funny cut the car out, drained the petrol, and refilled with diesel. Took it on a little run and all of a sudden glow plug light started flashing and it lost power.. i cut it out tryed restarting and didnt start. Waited five mins tryed again and it worked power was back. What do i do? Could it cause serious damage??

227bhp

10,203 posts

128 months

Sunday 19th August 2018
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Take it to someone who knows what they are doing.

Jaybmw

315 posts

81 months

Sunday 19th August 2018
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It usually wouldn't harm the car but diesel is a lubricant so you gotta be careful with pumps and a few other bits.. but I can't understand why it's throwing a hissy. You sure it was only started/driven for a few mins

GreenV8S

30,205 posts

284 months

Sunday 19th August 2018
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It could potentially have done expensive damage.

Talk to a mechanic familiar with diesels and follow their advice. Don't be surprised if they suggest you get the car recovered to them so they can fix it before you make the damage any worse.

Vanordinaire

3,701 posts

162 months

Sunday 19th August 2018
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You hear lots of horror stories about missfuelling, but in my experience, petrol in a diesel just stops it from working till you drain it and refill with diesel. I've dealt with a few and never seen any damage. I'm sure you do get cars with serious damage occasionally, but more often not from what I've seen
When you drained it, did you drain the fuel pipes, the fuel filter, and the injector pies? They can hold a fair bit of fuel and maybe you were running on a mix of fuels briefly. If it's running ok now i wouldn't worry about it.

GreenV8S

30,205 posts

284 months

Sunday 19th August 2018
quotequote all
Vanordinaire said:
in my experience, petrol in a diesel just stops it from working till you drain it and refill with diesel
Maybe it depends on the system or the proportion of petrol and diesel left in the system. It's notorious for causing accelerated wear in the pump and then feeding metal debris from the pump through the rest of the fuel system, effective trashing the whole lot. Given the likely cost of that repair and the potential for making it much worse by driving it, I'd play safe if that was me. Of course it's always easy to be brave with somebody else's money.

Lauren123

Original Poster:

29 posts

86 months

Monday 20th August 2018
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Yes i was driving it was driven for literally 2 minutes if that. And no dont think he drained the pipes

Lauren123

Original Poster:

29 posts

86 months

Monday 20th August 2018
quotequote all
GreenV8S said:
Vanordinaire said:
in my experience, petrol in a diesel just stops it from working till you drain it and refill with diesel
Maybe it depends on the system or the proportion of petrol and diesel left in the system. It's notorious for causing accelerated wear in the pump and then feeding metal debris from the pump through the rest of the fuel system, effective trashing the whole lot. Given the likely cost of that repair and the potential for making it much worse by driving it, I'd play safe if that was me. Of course it's always easy to be brave with somebody else's money.
What do i do then lol??

Vanordinaire

3,701 posts

162 months

Monday 20th August 2018
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Lauren123 said:
GreenV8S said:
Vanordinaire said:
in my experience, petrol in a diesel just stops it from working till you drain it and refill with diesel
Maybe it depends on the system or the proportion of petrol and diesel left in the system. It's notorious for causing accelerated wear in the pump and then feeding metal debris from the pump through the rest of the fuel system, effective trashing the whole lot. Given the likely cost of that repair and the potential for making it much worse by driving it, I'd play safe if that was me. Of course it's always easy to be brave with somebody else's money.
What do i do then lol??
You could be super cautious and take off and clean out the fuel tank, change all the fuel pipes, renew the fuel pump, renew the fuel filter, take off and clean the injectors...etc , etc, etc at a cost close to what a 59 plate Golf is worth, or you could just leave it and drive it. I'd personally just leave it (whether it was my own car or someone else's).
If you were to ask a main dealer, I'm sure they'd take the cautious approach and do the full works at enormous cost. That's why some insurers are now including missfuelling in their policies. Maybe worth while checking your insurance policy if you're worried.

oakdale

1,804 posts

202 months

Monday 20th August 2018
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If was me and it's now running o/k with the engine light not on, I'd just forget about it and carry on using it.

Lauren123

Original Poster:

29 posts

86 months

Monday 20th August 2018
quotequote all
oakdale said:
If was me and it's now running o/k with the engine light not on, I'd just forget about it and carry on using it.
Yes but yday when drove the glow plug light started flashing and lost power so cut it out tryed again it didnt start left it 5 and then ran ok with power back and no light

Lauren123

Original Poster:

29 posts

86 months

Monday 20th August 2018
quotequote all
If i change the fuel filter will it be ok??

Vanordinaire

3,701 posts

162 months

Monday 20th August 2018
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Lauren123 said:
If i change the fuel filter will it be ok??
Would be, but no point, if it's running now then the fuel filter will be full of diesel, any petrol in it will have been flushed through by now.

Lauren123

Original Poster:

29 posts

86 months

Monday 20th August 2018
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Ok thanks. Will uodate u all later gna try it and go for a little run. Thanks

Sardonicus

18,962 posts

221 months

Monday 20th August 2018
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You may well also have stored fault codes too now even if the MIL as gone out scratchchin this particlaur engine has an 02 sensor and 3 EGT sensors IIRC and if any of them are reading anything abnormal it will throw DTC's (fault codes) try not do it (petrol fill) again otherwise you may damage the DPF permanently frown

Lauren123

Original Poster:

29 posts

86 months

Monday 20th August 2018
quotequote all
Sardonicus said:
You may well also have stored fault codes too now even if the MIL as gone out scratchchin this particlaur engine has an 02 sensor and 3 EGT sensors IIRC and if any of them are reading anything abnormal it will throw DTC's (fault codes) try not do it (petrol fill) again otherwise you may damage the DPF permanently frown
Please help changed fuel filter and now wont start gna go to garage

Tyre Smoke

23,018 posts

261 months

Monday 20th August 2018
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Probably an airlock in the fuel lines.

Lauren123

Original Poster:

29 posts

86 months

Monday 20th August 2018
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Am i best just going to garage

Tyre Smoke

23,018 posts

261 months

Monday 20th August 2018
quotequote all
If you are competent enough to change a fuel filter, try bleeding the fuel system through and see how you get on.

If it was running fine, why did you think changing the fuel filter was a good idea?

zedx19

2,747 posts

140 months

Monday 20th August 2018
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If the car doesn't start, you need to get it to a mechanic unless you plan on stripping off components and diagnosing the fault yourself?