Im about to diesel purge my car, that has no engine problems, as preventive maintenence. Kosher.

Anyhow. What I am wondering is, from all the experiences I've read, people put the draw line and the return into the same bottle.

Some say the return comes back dirty. Mine will, I am sure.

So why let it reuse the dirty?

When the engine has drained a single bottle setup- where has all that return line muck gone? back into the engine? does a prefilter really filter out enough?

Why not have 2 bottles a clean and a return- so as the dirty cannot be reconsumed by the engine in any way. Or perhaps a one bottle setup cycled thru completely and than a second after with seperate bottles.

Is this idea just a waste of diesel purge?

Any thoughts are appreciated.

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OBK #32
1985 300D Turbo (15 gal Greasecar kit installed)
(258,900+mi.) Thanks- Tachometer Fixed. Middle Vents Fixed. Transmission- 1000% better shifting.
Vac leaks- Fixed, Brakes replaced, Steering Box replaced, .... Information Rules.

I'm not sure...but I've always woundered what's the difference between disconnecting the fuel lines to run 100% purge for a few minutes and just pouring it into the tank and burning it normally. The instructions say you can do it either way so what's really the diff...other than more work.

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1987 300TDT
1981 VW MKI Caddy 1.6 diesel, waiting on engine swap
1983 D-50 Power Ram 4x4 "Mitsubishi" 2.3 turbo diesel
assorted gas powered crap and motorcycles

RIP: 1984 300TDT, 1982 300TDT, 1984 190D 2.2, 1992 300D 2.5, 1987 300TDT, 1982 Maxima LD28, 1983 Maxima LD28, Isuzu C223 P'ups X3, 1983 Holiday Rambler 6.2 Banks turbo diesel, 1984 Winnebago LeSharo 2.1 TD, 1985 Allegro 6.5

This is intended to maximize the amount of diesel purge that is being circulated through the pump and injectors. Without the return line going back to the source bottle, only a fraction of the diesel purge will be introduced to the system with the majority going to the return loop back to the tank. It is also standard practice to replace the fuel filters after the diesel purge procedure. The secondary fuel filter should not let any big particle past that could damage the system.

TimK

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EPA 609 & 608 HVAC Certified
_________________________________________
83' 300D Turbo - 300K + Miles
00' 1.9L TDI Beetle
85' 6.5L Turbo, GV-OD, GMC Suburban,
67' 2.5L Diesel NA - Land Rover Series IIA

Here's what you do if it's so cold your diesel fuel gels. Smear some on some toast and stay inside until it warms up outside.

Agreed, I run two cans of purge, one catch "tank" and replace filters. Varying throttle.

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83 SD

84 CD

there is certainly black gunk getting introduced into the system, but it's usually just soot, no large particles. use it all, put both lines into the bottle.
John

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

Thanks for the insights!

Good-o!

__________________
OBK #32
1985 300D Turbo (15 gal Greasecar kit installed)
(258,900+mi.) Thanks- Tachometer Fixed. Middle Vents Fixed. Transmission- 1000% better shifting.
Vac leaks- Fixed, Brakes replaced, Steering Box replaced, .... Information Rules.

Im attempting to figure out what size hose/tubing I need for my 85 300d turbo. After reading an hours worth of different answers around the net, my brain hurts. I know know less than when I started.
Whats the id on the return and the in-line?
can I use cheapy tube or does it need a heat tolerance..

thanks....

(was pretty sure i had it figured)

__________________
OBK #32
1985 300D Turbo (15 gal Greasecar kit installed)
(258,900+mi.) Thanks- Tachometer Fixed. Middle Vents Fixed. Transmission- 1000% better shifting.
Vac leaks- Fixed, Brakes replaced, Steering Box replaced, .... Information Rules.

I don't think heat resistance is necessary, just find something that fits the nipples, you will only be using it for a few minutes. Just be sure the DP doesn't dissolve your hose!

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Muleears
'07 E320 Bluetec 133K my DD
'04 Jaguar XJ8 VDP, 34K
'10 Hyundai Accent 60K Grocery Getter
'02 VW Golf soon to be on the road again
'97 E300 Diesel Son's DD
'61 VERY tolerant wife

Hampton Roads, VA USA

Gone but not forgotten:
'67 250S 95K
'86 300SDL
'87 300D Turbo, 364K! R.I.P.
'98 E300 Turbodiesel, 213K
'02 S420, 164K
'01 Prius 138K

These engines recirculate about 15 x as much fuel as they use. This is so that the recirculated fuel can go through the main filter while the unrecirculated fuel only passes through the prefilter. All the gunk you are worried about should catch in the main filter before going into the bottle, so whatever gets in the bottle is so small it won't really make any difference.

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1984 300DT turbo 138k mi

Still hauling me to school and back.

Handy Site:
http://www.dieselgiant.com/

Just go to the local parts store and get a few feet of 5/16 fuel line, only a couple of bucks

Just in case you haven't already found this site in your seach, check out the maintenance page at diesel giant. He has an excellant tutorial on how to do the diesel purge.

http://dieselgiant.com/injectorcleaning.htm


TimK

__________________
EPA 609 & 608 HVAC Certified
_________________________________________
83' 300D Turbo - 300K + Miles
00' 1.9L TDI Beetle
85' 6.5L Turbo, GV-OD, GMC Suburban,
67' 2.5L Diesel NA - Land Rover Series IIA

Here's what you do if it's so cold your diesel fuel gels. Smear some on some toast and stay inside until it warms up outside.

I was wondering what would happen if one were to drive around the neighborhood with the diesel purge bottle set up secured under the hood. I really don't like to rev my engine in neutral. I don't even like to let it idle in park or neutral. I picture things spinning around too fast in there...sort of like a MLB pitcher throwing a ping pong ball. Thoughts?

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2009 E320 Bluetec 117,000
1995 E300D 306,000 Sold
1996 Ford Taurus LX 130,000 Sold
1985 300TD Still 225,000 Sold
2016 Ford Fusion 24,900

I found on my 83 300D that the two hose lines would not fit into the can at the same time. I ended up pouring the purge into a glass cup and shoving the lines into it. Had to have a friend start the car, but it worked really well. Car runs like a champ now.

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http://www.cityhicks.com

87 Honda Accord LXi (sold)
72 Chevy Chevelle 4-door 350 (sold) :'(
91 Nissan 240sx (sold) :'(
92 Toyota Celica (sold)
89 Chevy G-20 Conversion Van (sold)
91 Honda CRX (sold to friend)
81 Lincoln Continental (pimp ride project - sold) http://tinyurl.com/2nddq7 :'(
90 Nissan 240sx (waiting for tranny)
91 Cadillac Brougham Limo 350 (party cruiser)
06 Tank 150cc Scooter (destroyed)
90 Geo Metro Off Road Monster: http://tinyurl.com/36ry87
83 300D Turbo Diesel ~276k

use a 2 liter plastic juice bottle with a large cap. It will give plenty of room to drill 2 holes for the lines. Make sure you use bottles with the recycling triangle with a 1 inside, these will not break down from the diesel purge. I keep my setup on the top shelf for the next time I need it.

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'83 240D 264k on 100% biodiesel/ 31mpg
83 300D 217K the $800 gem
'82 300D 267K the new WVO project car finished and driving for free
International tractor B275 on B100
Ford 555 backhoe on B100
Sargent 25 ton Rough Terrain crane on B50

HDPE 2 will also work.
-Jim

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1995 S350D, Green with black leather interior.
Bought January 2008 w/ 233,xxx miles.
I did 22,000 miles during the first year of ownership.