diesel Fuel system cleaner

[rustymotor]

Mickyboy, I don't doubt you or your methods for one minute..

What I heard was that the add to filter method came from Forte themselves when they did a add campaign number on garages, they encouraged this practice and those participating garages got their names on the "Good Garage List".

This is just my opinion only and I've said it a few times now, adding a neat solvent in to the system, let me put it direct to you as an expert, does this have any effect on the seals in the high pressure pump?

Thanks.

[Mike Noc]

Well I'm no expert, but I don't think there will be a problem with the seals. Two things which come to mind with putting neat solvent into the fuel filter - lubricity and contamination.

The high pressure pump relies on the fuel oil for both cooling and lubrication. Funnily enough petrol is a good cleaner, but it will wreck a common rail HP pump because it strips the lubrication out.

In practice, the cleaner added neat will mix with the fuel oil in the system, and the amount used is relatively small so it shouldn't have a negative effect - used in larger quantities and it likely would though.

There is a risk of contamination every time you break into the fuel system, especially downstream of the filter, where even the smallest bit of grit can accelerate wear if it enters the HP pump. If you clean all the pipe connections before unplugging them and plug or cover the open ends then you should be fine.






.

[rustymotor]

Originally Posted by Mike Noc

Well I'm no expert, but I don't think there will be a problem with the seals. Two things which come to mind with putting neat solvent into the fuel filter - lubricity and contamination.

The high pressure pump relies on the fuel oil for both cooling and lubrication. Funnily enough petrol is a good cleaner, but it will wreck a common rail HP pump because it strips the lubrication out.

In practice, the cleaner added neat will mix with the fuel oil in the system, and the amount used is relatively small so it shouldn't have a negative effect - used in larger quantities and it likely would though.

There is a risk of contamination every time you break into the fuel system, especially downstream of the filter, where even the smallest bit of grit can accelerate wear if it enters the HP pump. If you clean all the pipe connections before unplugging them and plug or cover the open ends then you should be fine.

What I read Mike was this stuff is basically zippo lighter fuel.

This from directcarparts.co.uk

How to use Forte diesel injector cleaner:

Simply add the content of the bottle to your fuel tank and then add approximately 40 litres of Diesel to your tank.

Can be used when servicing your car by adding directly to a new diesel fuel filter. Most good garages will use Forte diesel injector cleaner this way when carrying out an annual service.

Assuming that a person uses a 400 ml dose and a rough average fuel burn approx 2 grams a second ( 800 to 1000 rpm ) at 50/50 mix with clean diesel 800 ml the engine is taking a while to pull it all through 6.66 minutes.

Now you would think that the HP system being at 2007.5 Bar (29,000 psi) would keep itself fairly clean..

Years ago had a Vectra 2.0DTI, one day I found myself filling it up with unleaded..when I realised what I was doing I had put 2.5 litres in the tank then, topped it up with diesel. The car ran so well it was incredible..straight through the MOT on emisions and the mileage was 256 thousand when I sold it.

Please excuse my maths could be way off..

[Mickyboy]

Originally Posted by Mike Noc

Well I'm no expert, but I don't think there will be a problem with the seals. Two things which come to mind with putting neat solvent into the fuel filter - lubricity and contamination.

The high pressure pump relies on the fuel oil for both cooling and lubrication. Funnily enough petrol is a good cleaner, but it will wreck a common rail HP pump because it strips the lubrication out.

In practice, the cleaner added neat will mix with the fuel oil in the system, and the amount used is relatively small so it shouldn't have a negative effect - used in larger quantities and it likely would though.

There is a risk of contamination every time you break into the fuel system, especially downstream of the filter, where even the smallest bit of grit can accelerate wear if it enters the HP pump. If you clean all the pipe connections before unplugging them and plug or cover the open ends then you should be fine.






.

Well Mike, you may not be an expert but your understanding of how it works is perfectly rational and pretty accurate to say the least.
One of the key issues that forte helps to address is spray patterns, put it like this try the method that I described into the filter then test the emissions the following day then test the emissions approximately a week later and you will see that this is not a cheat style bottle but more an effective method of maintaining correct spray patterns on the injectors.
I have been using it for years in many different Rover 75's & MGZT's with no ill effects on the high-pressure pump.
Also you will notice if you go to your local motor factors they probably won't sell forte specialist diesel injector cleaner, if you go to Halfords they won't sell it either, not that that's an issue to most people as it is freely available on the Internet.
Mick

[clf]

Before forte, after being brought up to temp, and after forte (along with a short Italian tune up - as much as an auto will allow) . there is a difference in both the figure and running. Running it was more responsive and smoother. Adding forte made the biggest noticeable difference after doing 'something' , eg egr bypass or intercooler hose.

Direct to fuel filter and left over night after running for 30 or 40 seconds.

Sent from my SM-A310F using Tapatalk

[Mickyboy]

That highlights my point perfectly, I can also tell you something else about these figures that you haven't shown that I can see from the calculations and data is that it was done on a facelift car with a single pump system

That's a good example that you've uploaded
Mick

[Mike Noc]

Have used this method on my Freelander TD4 Mick, which was smoking a bit on idle from cold.

Worked a treat.

[rustymotor]

Sorry Guys, I don't buy the argument for chucking a solvent in the fuel filter..

If the HP pump get's jammed because of no lubricant then metal fragments can shear and do untold damage, there is plenty on line where this has happened though, mainly due to the use of bad diesel.

Anyways, it's just my opinion not worth a lot I know..

[Mickyboy]

Originally Posted by rustymotor

Sorry Guys, I don't buy the argument for chucking a solvent in the fuel filter..

If the HP pump get's jammed because of no lubricant then metal fragments can shear and do untold damage, there is plenty on line where this has happened though, mainly due to the use of bad diesel.

Anyways, it's just my opinion not worth a lot I know..

I wouldn't say your opinion isn't worth a lot, in fact it's good to have an opinion, and what's most important is when a opinion is put in a polite and informative way like you did, that helps the forum remain a positive experience for its uses.

And in Mike Noc case it probably corrected the injector spray pattern making the fuel well atomized, rather than a solid stream with droplets
Mick

[rustymotor]

Thanks for those kind words Mick appreciated