Good day all.I have been running my 300tdi on a mixture of 80%WVO AND 20% PETROL.On a full tank I drove for 35 miles and topped up with Supermarket diesel.My calculation indicated I was getting 18.8 miles to the gallon.This was on short journeys only.The car has been running fine however while on a journey after 30 miles it began to loose power.I stopped the car and revved it up hoping to clear it but the revs went round the clock then fell back to 2000 this was with the pedal to the floor.It starts ok and idles where it should, but as soon as I put my foot down it powers up then falls back to idle.It will idle indefinitely if I want.I switched of the engine for 10 minutes started up again and it revved up ok then fell back again.I removed the fuel filter and cleaned it out. The fuel looked a bit thick.Replaced the filter back on and it made no difference.Before this problem I thought I should empty the full tank but in trying to remove the hose pipes at the sender unit,one of them (the return one) partial broke (Rust).Never attempted to remove the feed one.I managed to seal the small hole with sealant and no fuel has come out and as I said the car was running fine on short journeys.Would a possible reason for the no power problem be air getting in to the system via the sender unit return pipe.Perhaps the hole is not sealed.
Any help in this matter would be greatly appreciated.
Any help in this matter would be greatly appreciated.