i've put diesel in the BEC!!! advice please.
MK9R - 5/6/14 at 07:08 AM
Dont ask how and try not to laugh too much, but ended putting diesel in the race car at its first rolling road test!!
So what do I need to do to clean this lot out and ensure no damage to the engine (zx10r 08)?? Loads of conflicting info on google so would really like
some advice from people in the know!! The engine was run witjvthe diesel in and it was only the splutter that made us realise. It was almost pure
diesel in the tank
[Edited on 5/6/14 by MK9R]
britishtrident - 5/6/14 at 07:21 AM
If you are looking for shortcuts there aren't any. drain and flush the complete system.
MK9R - 5/6/14 at 07:25 AM
quote:
Originally posted by britishtrident
If you are looking for shortcuts there aren't any. drain and flush the complete system.
No not short cuts just anything other than draining and pumoing petrol through. Fitting a new filter, but just wondering about injectors etc
HowardB - 5/6/14 at 07:46 AM
the AA guys have some special flushing fluids, I guess it must be possible to buy from Halfrauds or somewhere,...
this is what I found on t'web
diesel in petrol worst case scenario, the diesel will enter the cylinder and not burn, it will slide past the piston rings, into the oil sump and
therefore the cars oil system, this will increase the oil level, to a point that could cause total engine failure, i.e mangled rods, bent pistons,
complete block failure, or the thining of the oil can reduce lubrication to the engine and it could suffer from a full seizure/big end failure/ruined
propshaft. Again this would not be an easy thing to do, the car would be very low on power and not running right, you would have to do a good bit of
driving in it to achieve the above.
so if it is still running, then not only will the fuel system need flushed, but also the engine oil ought to be changed,...
steve m - 5/6/14 at 07:47 AM
I did it in my 7 years ago, and just pumped as nuch out and refilled with petrol and drove home
It did smoke a bit, but ran fine
However an old xflow on carbs would probably run on anything !
mark chandler - 5/6/14 at 08:51 AM
Drain the tank, put a couple of pints of petrol in the tank divert the fuel return to a container and hot wire the fuel pump to flush the injectors,
filters etc.
Restore the pipes fill with petrol and run 
[Edited on 5/6/14 by mark chandler]
nick205 - 5/6/14 at 10:10 AM
quote:
Originally posted by mark chandler
Drain the tank, put a couple of pints of petrol in the tank divert the fuel return to a container and hot wire the fuel pump to flush the injectors,
filters etc.
Restore the pipes fill with petrol and run
[Edited on 5/6/14 by mark chandler]
That would be my approach too.
coyoteboy - 5/6/14 at 12:11 PM
Mine too. If it was only run for a short time it's just going to be a case of flushing it through once the tank is drained. Petrol is a thinner
solvent so should have no issues flushing the diesel out - just be glad it's not the other way round!
adithorp - 5/6/14 at 12:36 PM
Neverseemdervin a petrol engine cause any long term damage.
I'ddo what Mark suggests. Worst you'll get is a bit of blue smoke at first. Just be sure to get the tank dry or any remnants will settle out
in the bottom everytime it's left standing and you'll get smoke again.
JoelP - 5/6/14 at 01:16 PM
'Hot wire the fuel pump' makes me shudder every time I hear it - my mate burnt his garage down trying that!
MK9R - 5/6/14 at 02:13 PM
Cheers all
jeffw - 5/6/14 at 04:10 PM
Isn't it worth a 1.4 reduction in capacity running a Diesel engine
Slimy38 - 5/6/14 at 04:50 PM
quote:
Originally posted by mark chandler
Drain the tank, put a couple of pints of petrol in the tank divert the fuel return to a container and hot wire the fuel pump to flush the injectors,
filters etc.
Restore the pipes fill with petrol and run
[Edited on 5/6/14 by mark chandler]
It would flush the filters and fuel lines, but it wouldn't get to the injectors would it? They're not 'injecting' if you're
only operating the pump.
Having said that, I seem to remember petrol injectors are more tolerant than diesel injectors, so I wouldn't be overly worried about not cleaning
those out.
To be honest, I'd just empty the tank, fill up with petrol and drive. And just in case some did get into the oil, I'd reduce the service
interval by 1000 miles.
onenastyviper - 5/6/14 at 05:44 PM
Petrol in a diesel engine can ruin the high pressure pump which is (apparently) lubricated by the diesel itself: petrol does not lubricate it enough.
coyoteboy - 5/6/14 at 07:46 PM
quote:
It would flush the filters and fuel lines, but it wouldn't get to the injectors would it? They're not 'injecting' if you're
only operating the pump.
No but it'll get all but the last couple of CCs clear through the fuel rail and pressure regs, if it's EFI.
Diesel injectors are more touchy, as are high pressure diesel pumps. Most petrol stuff is fairly agricultural and will hang on to life fairly well - D
isn't that bad for anything and it does wash out with petrol. Not the end of the world, but a waste of a tank of fuel!
quote:
'Hot wire the fuel pump' makes me shudder every time I hear it - my mate burnt his garage down trying that!
I shudder to think what you have to do wrong to get that to happen!