Yes I found and ordered it. To my surprise diesel giant advocated running it 100% in place of diesel fuel. They suggest an under the hood bypass of the usual fuel routing. Got any experience with this routine?

thanks

FYI, a 7 day MM oil soak just finished, didn't clear the smoking but the jury is still out on what is causing the smoke.

I'm not really relishing the idea of putting new rings in.

No but it is very agressive on petroleum based sludges and animal fats plus a few other possible things you may have in there and cheap. Some have used gasoline but it is much slower acting. I would do a short soak and depending what the results are perhaps another one.

You are just trying to dissolve anything that may have accumulated in there. All components in your pumps vintage are metal. Laquer thinner is a general very useful solvent that I have always purchased in five gallon cans.

Used it extensivly with no negative issues over thirty years. Even with carborators that have plastic floats and rubber diaphrams although I tend to reduce the soak times on them. Some forms of plastic and laquer thinner are not a good ideal. Laquer thinners can dry out seals as well but again never has been an issue for me.

Although also remember laquer thinner or gas can do nothing with rust. The only other caution is it is highly flamable much like gas is. So some caution when using is smart.

As for what the result would be of flushing the pump is going to depend if there is anything in there to dissolve. Also if whatever it was has been interfering with causing a form of stickage.

In addition your complaint is not all that common. Yet a few have done flushes with an awful lot of ugly stuff coming out. For those it turned out to be helpful. My way the resultant junk if there once loosened up is not fed through the injectors either.

I still rate this as a little of a long shot but again for the small effort worth doing. Or I would do it if in your situation just not expecting too much. I can not see where any harm can result.

Since the engine can run on diesel purge just do not expect too much of it if trying to deal with animal fats for example. Diesel purge is like a light tuneup type of chemical in comparison to something like laquer thinner. At least shut the engine down once the purge is in the system. It is weak in comparison and this helps to allow it time to dissolve more mass. Diesel purge just might be fuel oil with ten to twenty percent solvent like laquer thinner. Almost all fuel system cleaners are based on laquer thinner or closely related chemicals I suspect as the active component.

The first 25ml of lacquer thinner discharge had a whitish gelatenous material in suspension , not dissolved, probably water soluble, and black flecks of ?

the second 20ml 20 min later was yellowish, otherwise clear.

It sounds like the stuff you got out is not normal. Lumpy globules where reported by one members gasoline soaking. He did not describe their color. For the effort involved you should have gotten some darkness in the fluid if it was predominatly petroleum based residue in there.

The lack of the dark color indicates someone may have put diesel purge through that pump not that long ago. Or whatever the stuff coming out of the pump it's original base component may have cleaned past diesel fuel deposits. Diesel fuel deposits tend to be very dirty. Some by product in waste vegatable oil sounds likely. Animal fats may be more soluable with gasoline. . A gasoline soak is harmless as well.

How long was it soaked? . In this case you may want to try a soak with gasoline as well. But leave it in there for at least several hours if not over night. The good news is there was something in there that should not have been. So it could be your issue. Soak and remove the fluid until it is the same color as that going in is about the only certain way to know you have got it all.

The colour of the fuel coming out after the first pronounced amount could have been the same stuff disolved and in suspension as well. It should have been as clear as it went in the pump not yellowish. Perhaps another laquer thinner soak is in order.

How much if any remaining stuff of this nature inside the injection pump is the unknown. As the last pumped out was not clear but yellow.

On reading your post more carefully and thinking about it for a few more minutes. Do another laquer thinner soak. It is cutting the stuff after all that is in all probability animal fats. Although vegatable fats are whitish as well I think. Understand that I know little about waste vegatable oil by products.

Barry, is it necessary to remove the oil filter tower to get the ip out?

Next step: install a different ip that was apparently operating correctly on an older 380K motor.

Nope you don't have to remove the tower - but it helps if you remove the cover to let the oil drain back into the sump. This stops the oil from pouring out of the intermediate shaft area:-

617 IP removal help

__________________
1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!

Sorry the soaking did not clear up the problem. Still I think it was worth the slight chance of it working for the effort involved. As stated it was a long shot.