Thread: Check Engine light. Water in fuel and EGR high

Its not just pumps water wrecks its the injectors as well and big city gas stations can suffer from water in their tanks just as much as country ones. Personally I would be taking it to a workshop with the least amount of driving ASAP.

Think back about twelve months ago about ten plus cars filled up at the big gas station / Maccas / KFC on the side of the M4 near Eastern Creek Raceway and all stopped within a kilometre or two of the joint because of water in the fuel.

Depending on who your insurer is this can be covered by your policy if you can show that it happened after you filled up somewhere. If you can't get it covered by insurance and indeed you do have serious water contamination then it is likely to be very expensive to fix it properly and that is why I would not drive it until you know what the case is.

Open the drain on the fuel filter, catching what comes out to inspect. Sometimes the water sensor can be faulty but you can't assume that is the cause this time after all the recent rain.

Thanks Terry, yes I thought that would be the answer.it was running fine when I turned it off. Maybe I should flatbed it.

Originally Posted by Graeme

Open the drain on the fuel filter, catching what comes out to inspect. Sometimes the water sensor can be faulty but you can't assume that is the cause this time after all the recent rain.

Thanks Greame, yes with all the rain, and also my recent activities there is some real chance there really is water in there. I might leave it for my mechanic though so he can do all the diagnosis and I don't wreck it for him.

Hi AnD3rew,

I had the same problem after a good hosing down from a beach run. As Greame said, I pulled the filter off and checked for any water in the diesel. There was none so we put it down to the sensor getting to wet. Replaced the filter anyway and no problems after that.

Scott.

Well I got lucky, it was a very corroded fuel filter sensor. Replaced filter and the filter housing and sensors and all good. Thanks Greg and Garry @ Cremorne Prestige for sorting me out on the spot too.

Just watching EGR for now.

I had to eventually buy a new housing because the sensor's electronic module that's attached to the top failed, but only swapped the modules to avoid having to R&R the housing with its associated work. Mine showed water in fuel after driving through puddles since new but the service people didn't read the complaint properly so only drained the filter. The problem at the time was water getting into the connector for the sensor itself, fixed by smothering the connectors in silicone sealant until the module failed much later.

Well I have to say the whole job looks very easy when it is up on the hoist but it would be a bugger trying to do it lying on your back under the car, just the filter wouldn't be too bad, but the housing would be very fiddly.