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Any ideas for cleaning injectors after bad fuel?

Tech Talk for Nissan owners.

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Any ideas for cleaning injectors after bad fuel?

Post by HI-LUXury »

The car is a GU rd28t and got some shit fuel, started coughing and spattering, changed Fuel filter and added some Nulon Injector cleaner, but unfortunately it still doing it. Any ideas?

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Post by pongo »

try the chemtech diesel treatment.

Failing that, take it on a long hard run to really clean things up a bit
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dirty fuel

Post by pom300 »

are u sure u got dirty fuel what came out of the sediment filter
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Post by mkpatrol »

Drain fuel tank, flush everything & start agin.

Also replace the filter again as the dirty fuel left combined with the Nulon will have blocked that too.

Try this first before you do anything else.

Did you bleed the system correctly before you restarted?
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Post by Mario »

Here in Panama we add either some outboard 2 cycle oil or some ATF to the diesel tank before a fill up. It's a trick learned from 18 wheeler and truck drivers...
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RN
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Post by RN »

Mario wrote:Here in Panama we add either some outboard 2 cycle oil or some ATF to the diesel tank before a fill up. It's a trick learned from 18 wheeler and truck drivers...
I have heard that some truck drivers here add a small amount of petrol to diesel fuel to clear the injectors and I believe it can be reversed for a petrol engine.

Something to do with the change in viscosity of the fluid going through the injector.

Not sure if it is an urban myth but I have heard it a few times.
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Post by mkpatrol »

RN wrote:
Mario wrote:Here in Panama we add either some outboard 2 cycle oil or some ATF to the diesel tank before a fill up. It's a trick learned from 18 wheeler and truck drivers...
I have heard that some truck drivers here add a small amount of petrol to diesel fuel to clear the injectors and I believe it can be reversed for a petrol engine.

Something to do with the change in viscosity of the fluid going through the injector.

Not sure if it is an urban myth but I have heard it a few times.
Generally an urban myth, deisel injectors run super high pressures & rely on the seal and shape the needle valve has. If there is any wear then the injector will not spray correctly.

Image

Page 16 has a good overall diagram of a mechanical injection sytem, other than that, some light reading :lol:


http://lib.tkk.fi/Diss/2003/isbn9512266 ... 266598.pdf
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Post by Dzltec »

If you have replaced the filter, now have good fuel in the tank and it still runs rough after a good run, then you have either pump and or injector troubles.


Andy
www.diesel-tec.com.au Ph 03 9739 5031
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