Wynn's EGR Cleaner

[PuntoHowTo]

Earlier today I bought a can of this for my diesel punto

Essentially what you do is warm the engine up, disconnect the engine inlet pipe between the intercooler and the intake then with the engine running you spray the whole can (200ml) a bit at a time into the intake, it then supposedly cleans the intake, valves combustion chamber and egr valve.

I've actually used it already but want to gauge what people's thoughts are on such a product before I go into any further depth about any differences it has or hasn't made

 

[dave]

snake oil, any difference will be placebo

it may clean a little crap off things before combustion chamber but when in there it will burn up and do nothing on the way out.

 

[ChrisUK]

Worked ok on a 2006 Ford Tranny Connect which had the MIL light on for insufficient EGR flow. Light went out on it's own 30 minutes after use and hasn't come back 6 months later. The engine sounds ruuuuuuf as a tumble dryer full of hammers so go gentle on the squirting


I keep meaning to remove and clean it properly but I really cannot be chewed. I'm guessing it would have worked even better squirting it into the egr valve itself.

 

[a1ant]

Hi,

IMO it will depends a GREAT deal on the set up of the EGR system as to weather it will even touch the EGR. On a lot of VAG's and Chris's tranny for example, the EGR forms part of the inlet, and therefore the spray will go through it before entering the engine.

On a lot of fiats such as the JTD's and Multijets, the EGR is tapped off the side of the inlet manifold. As such the only way it would get any flow of this stuff through the valve itself is after combustion and via the exhaust manifold.

Plus theres no way that spraying something in the inlet will completely clean something like this....

And even if it did, you wouldn't want chunks of that in the POST filter intake system.

Im sure in the right situation, with the right set up of EGR system etc,and when the blockage isnt "severe" it will probably clean it enough to keep you going for a while, but as Chris says, it wont beat a proper EGR off clean.

Alan

 

[oldhammer]

ITs dangerous stuff in the wrong hands!.

As it says on Tin for professional use only.

ive used it in the past. its good but id sooner strip an egr off and clean it out
with clean diesel and paint brush.

 

[PuntoHowTo]

as a few people have replied I can share what I think

its amazing stuff !!!

i seriously thought it might clear a bit of gunk out and to be honest I can't really see because of the location of the 1.3 multijet intake (you can't really see in to it) however while i was spraying it in you could feel the EGR valve continually opening and closing allowing warm exhaust gasses to flow from the air intake, i have no doubt that some of it will have gotten into the egr, that said the air intake its self was pretty gunked up much like the pic posted above, after a smidge under 100,000 miles it was pretty messy so even cleaning all that crud out would be a bonus.

anyway I followed the instructions an took it on a short drive after then a longer drive today, and its had an amazing effect on the car, and reminds me what it was like when i bought it 5 years ago.

much better throttle response, seems more powerful less laboured on hill starts and pulling away in higher gears in slow moving traffic.

now I appreciate what was said about the placebo effect which if it was a little better I might agree with, however this is a whole different world of better.
Even cabin noise it vastly improved which i noticed by the volume on the radio being set to much lower than normal

Given that the EGR valve on the 1.3 multijet it near impossible to access let alone remove, this seems like a very acceptable compromise.

I thought it might be a bit 'snake oil' but this has made a serious and significant difference to how the car runs so I absolutely would have to recommend it to anyone with a high mile diesel which is feeling a bit sluggish

I think though looking down the pipe from the intercooler and turbo it might benefit from the whole induction system being stripped and cleaned

 

[oldhammer]

iagree.There aint no placebo effect to it.
it don't just clear out the egr -it cleans up the inlet valves too so does give you some gains.

but as ive said above, this stuff is lethal in wrong hands,(its meant for pro-use only!)
spray in at 3 second bursts -and don't rev the car for atleast 20 mins after the cans been sprayed in, let the car tick over and let it burn this stuff off!!

or the car will rev its nads off to point of destruction.
don't breath this **** in either. it can give you an instant heart attack
its lethal !!

 

[PuntoHowTo]

don't breath this **** in either. it can give you an instant heart attack
its lethal !!

The main solvent ingredient is naphtha which is no more harmful than petrol it can cause respiratory irritation but your not going to suffer and instant heart attack if you breath some in.

I believe the real reason it is recommended for pro use is because of the need to take the induction system apart to use it.

The instructions for the product clearly state leave 2 mins after the can is empty then rev 3-5 times up to but not over 2500rpm or take it on a 3-5 mile drive

It's not going to cause diesel over run unless there is already a problem with the engine

 

[al68]

Hi,

IMO it will depends a GREAT deal on the set up of the EGR system as to weather it will even touch the EGR. On a lot of VAG's and Chris's tranny for example, the EGR forms part of the inlet, and therefore the spray will go through it before entering the engine.

On a lot of fiats such as the JTD's and Multijets, the EGR is tapped off the side of the inlet manifold. As such the only way it would get any flow of this stuff through the valve itself is after combustion and via the exhaust manifold.

Plus theres no way that spraying something in the inlet will completely clean something like this....

And even if it did, you wouldn't want chunks of that in the POST filter intake system.

Im sure in the right situation, with the right set up of EGR system etc,and when the blockage isnt "severe" it will probably clean it enough to keep you going for a while, but as Chris says, it wont beat a proper EGR off clean.

Alan

I have just fitted a new egr valve on my 1.3 multi jet diesel. I took off the main air inlet on the end of the manifold to improve access to the egr valve. The manifold and feed duct look a bit like the picture posted above. Black thick mud! Where does it come from? The egr was as clean as a whistle. Replaced it because Fiat diagnostic said it was the egr that caused an 'engine failure' warning on the dash. Done 69000 miles mixed motoring.
Any info on sludge welcome.

 

[maggers]

If you were forced to eat your own crap you'd look like that. Ah, diesels! I don't miss them a bit.

 

[s130]

The thick crud on the inlet manifold, plenum, tracts and swirl valve is a mixture of EGR soot stream and the oil vapour coming from the turbo/intake path.

For some strange reason I've yet to see a diesel turbo unit that does not show signs of oil seepage into the inlet stream.

On a petrol car all you have going into the inlet manifold is lots of slightly tainted (with oil) lovely air. On a diesel engine all that soot you see produced (old non DPF filtered cars) get sucked in via the EGR and mixes with the air/oil mist. Over time this all builds up into a soggy sticky mess in the inlet path.

A solution on diesel engines to this would be to take the EGR of AFTER the DPF but I'm not sure these EGR temperatures would be enough to help lower the NOX which EGR is designed to do.

 

[buttonsandzips]

as a few people have replied I can share what I think

its amazing stuff !!!

i seriously thought it might clear a bit of gunk out and to be honest I can't really see because of the location of the 1.3 multijet intake (you can't really see in to it)

I am in a similar position with my MJ, no way I am going to be able to remove the EGR and clean it myself so will try this. Where exactly did you spray it into? I have replaced the MAF before so I guess one side of that?