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Old 22 March 2012, 13:09   #1
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DF 70 diesel contaminated petrol

Anyone know how to flush out contaminated fuel in a suzuki df 70? Managed to connect a tank of 30/70 diesel /petrol mix and stalled the engine!!!Dont ask!!!!! I have the service manual but cant see an obvious bleed screw/valve.Thanks!!!
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Old 22 March 2012, 16:20   #2
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I think that engine will be fuel injected. If so, I think you will have to strip it down somewhat and flush through the pipes and filter and also get the injectors cleaned. Each time the ignition is turned on the fuel pump will prime for a few seconds. I suppose it would be possible to disconnect the delivery pipe and let it prime for a bit to clean out the pump and tubes, and then change the filter and maybe see if it will fire up. You might get lucky unless the injectors are clogged.
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Old 22 March 2012, 16:30   #3
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What Erin said... I'd drain and replace all the fuel filters including the one under the cowl. Then disconnect the fuel pump and turn the key for awhile until fresh fuel is flowing. Pull the plugs and clean them. Then lastly reconnect the fuel pump and see if it'll fire up.
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Old 22 March 2012, 17:34   #4
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Thanks guys!!!
I have found the plug on the delivery pipe so will try in the morning.
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Old 22 March 2012, 18:13   #5
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Take care with the disconnected fuel lines and injectors. The high pressure petrol atomised by an injector is fine enough to pass through your skin and poison you. At least that's what I've been told and I'm sure someone will be quick to advise otherwise if I'm wrong.
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Old 22 March 2012, 18:50   #6
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Quote:
Originally Posted by Erin View Post
Take care with the disconnected fuel lines and injectors. The high pressure petrol atomised by an injector is fine enough to pass through your skin and poison you. At least that's what I've been told and I'm sure someone will be quick to advise otherwise if I'm wrong.
Thanks for the warning.Ive done a diesel engine course and been well warned about injectors!!!!
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Old 22 March 2012, 18:55   #7
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I wouldn't disconnect the HP injector lines, just downstream of the LP fuel pump. I am guessing there's a low pressure pump to drawn fuel up from the tank.
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Old 23 March 2012, 12:00   #8
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THanks guys.

Managed to flush it out by using the ignition swith to prime the low pressure pump.That did the trick.Cleaned the plugs and she fired up!!! Will try not to do anything so stupid for the rest of this season at least!!!!
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