petrol in hdi

my old woman decided to put unleaded 10 litres of unleaded in the tank of
my 306 hdi.
the engine has not been started.
where's the best place to drain from, and will i get away with a simple
drain and re-fuell?

... yes, she is blonde!

 

Lets not be blondist!

10% petrol in diesel is about the maximum you should risk. How much was in
the tank when she added the petrol? If it was almost empty, then if you can
get 5 or 6 litres out, then fill it up with diesel you ought to be
ok. The problem is not combustion but lubrication of the high pressure pump
and injectors.
I suppose you could also add a bit of oil to the tank to offset the petrol
too.
Keep the fuel you remove, and use it to top up the next couple of tankfuls.
Don't kow where you should drain the tank from, but if you disconnect the
fuel feed to the filter, point the pipe at a container and turn on the
ignition, the fuel lift pump should do it's bit. How quickly though I don't
know.

Good luck. At least she won't do it again, She is not the first, nor will
she be the last.

Brian.

 

Garage I know charges £300 for callout, towing and drain, and they keep what
gets drained out. They use it in old Land Rover.
Bit of fun, but it could save many a problem. I bought a little box of
tricks called DieselGuard. About the size of a matchbox, sticks inside the
fuel filler lid and tells you (in macho American of course) that,
'This vehicle runs on diesel fuel-diesel fuel only. Warning- fill with
diesel fuel'.
No wiring- it's the same technology that gave us talking and singing
greeting cards.
About £14.
DaveK.

 

my old woman decided to put unleaded 10 litres of unleaded in the tank

just fill it up with diesel, that much petrol won't harm the engine, did
the same myself not long ago when we got a new (to us) deisel car after
driving a petrol car for years

hair colour has nowt to do with it (c;

LJ

 

NO NO NO


the HDi should have no petrol in any percentage in its HP pump

wich run at almost twice the presure as a normal diesel and therefore
dont react to well to petrol

you wil ruin the pump and injector doing so

best is to disconnect the fuelhose just before the filterhousing
put the car on ignition, the primepump now starts pumping the fuel
wait til nothing comes out, then fill the tank with some three four
litres of diesel and pump that out to.

now put in a little bit of diesel again, and pump til some diesel
comes out, do not let it run dry however. reconnect the fuelhose.


use the obsolute fuel for a summer BBQ or a nice campfire

 

unclebuck wrote in message

Drain it fully before you even think of starting the engine. A similar
'accident' has just cost a mate at work over £1700 because he drove the car.
High pressure diesel pumps are particularly intolerant of loss of the
lubrication that diesel has and petrol hasn't.

Bob

 

Hi,

I'd say up to 10 times the pressure of an old-school Diesel : about 130-150
bars for a classic Diesel, up to 1200-1300 bars for a HDi.
And yes, it doesn't like petrol at all.

Depending on where is the feeding pump (the electric one), I'd rather
disconnect before the pump (if it's an external one), 'cause I don't know
how the electric pump reacts with fuel... It may seize it as well (worst
case).

 

will i get away with a

But it's not a standard diesel lump, it's hdi. The pump supplies fuel to the
injectors at a pressure which overcomes cylinder compression pressure. I
think it's about 5,000psi. Not sure of the technology but it's not designed
for anything other than diesel fuel. I wouldn't take the chance,-complete
drain and flush through with diesel.
DaveK.

 

injectors arent too keen either and they are £250 plus each plus fitting
also you are recommended to change the pipe too so add another £120 to that
all plus vat

drain it all out clear it out the fuel pipes and change the fuel filter and
you should get through it

 

But it's not a standard diesel lump, it's hdi. The pump supplies fuel

ours is an hdi, 2.2 pug, and AFAICT it had no ill effects, but then I
only put £3 in (not £9 ish like the OP) and filled it up with £40 of
diesel.

LJ

 

your right on that, its about 1300 Bar but 150 bar was a hell of a
long time ago

the fuel prime pump is an impellor type, is schould not have any
problem with petrol contaminated fuel as it is the very same type used
in petrol cars

 

Why not admit you did it yourself?


--
regards,

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