Thread: 2.7L Turbo problem

Our spannerman at work cleaned the MAF sensor in my work ute the other week.He is one of them blokes who knows everything.Anyway he dosed it up whist it was still connected to the hose/turbo with brake cleaner.I pointed out that that aint good you need to remove it,a few of the other blokes were there to witness it.Anyhow he started it,wow it did some big revs and blew lots of white smoke.It didnt blow,but I had a smug look on my face.Told him next time you will remove it to clean it
Andrew

Originally Posted by DazzaTD5

Well thats pretty well agreed... its glorified water..

To be fair though, got to give credit for someone revamping an age old trick, its prolly more idiot proof if following the instructions and hey if it work (no reason why it shouldnt and a few here have used it) great solution.

Regards
Daz

Gave it a try on my 2.7 D4 to try and de-coke the EGR valves as they were sticking open. It seemed to work and an additional benefit was cleaning up the variable vane turbo.

Recommended it to my mate who has a 3.0L D4 and it certainly removed a lot of soot and coke during the application. Took it for a hard drive and it poured smoke for about 1.5K's then settled down.

As he had a Defender with an after-market variable turbo - we cleaned it up too so all is now good for the fleet!

BTW - I've since had the ECU reflashed with the EGR software mod as I was shocked at the price LR quoted to replace the EGR valves. It was cheaper (And permanent) to reflash the ECU!

I remember learning that a water hose squirted into the intake of a running gas turbine was used to clean out the carbon if regularly run on diesel. Understood also that the O2 in H2O gave a slight performance boost in the right dose.

Having just done a long trip to Melbourne and back I note that I can produce no black smoke under acceleration anymore. I was hoping that the turbo and EGRs were better for it.

Well it seems the smoke problem has returned so it may have only been a temporary fix. Water in the intake has been known to punch a hole in pistons as water does not compress.

Originally Posted by PerthDisco

I remember learning that a water hose squirted into the intake of a running gas turbine was used to clean out the carbon if regularly run on diesel. Understood also that the O2 in H2O gave a slight performance boost in the right dose.

Having just done a long trip to Melbourne and back I note that I can produce no black smoke under acceleration anymore. I was hoping that the turbo and EGRs were better for it.

Hence why many WWII fighers used water injection for emergency power boost . . .


Oh Farrrr# I have a 190 on my tail!!!!

The gas turbines that my work uses has a feature called "Sprint" where they use a water spray in a fine mist in the engine. However its main purpose is to cool the intake air which gives more power and efficiency.

I had not heard of water injection into the Merlin. The 'secret' that won the war and gave the Allies the edge over the Germans was the development of high octane fuel (from the USA). The Germans only had access to poor quality oil reserves. The Merlin got huge hp gains / high compression / supercharged etc. The go-fast button on the stick I think allowed an engine life of 8-minutes. Handy when a Stukker was on the tail.

Well this Disco has been at Tickles for 6 weeks and finally a result. It has been a saga. The first diagnoses was a faulty turbo. A new turbo was imported from the UK. Body of to replace. With the new turbo, still not resolved. They then found a crack in the intercooler. This was replaced, still not resolved. EGR's were blanked , still not resolved. Next diagnoses, the new turbo was faulty so they suggested putting the old turbo back on. Old turbo re installed, still not resolved. Information sent to the UK who replied to say a turbo fault. For some reason, I am not sure why, they then removed the cat converter, problem resolved. It seems the cat was blocked the whole time. It was suspected at first and the joint where the cat was connected was disconnected but the cat was not removed when testing. $4,000 later, now have a disco that pulls like a train. It could have been fixed with a new intercooler and a $10 piece of pipe welded through the cat if diagnosed correctly in the first place.
I hope this post can help others in future who may have a similar problem.Now have a brand new turbo for sale in anyone is looking for one. pm me.