Diesel Purging????

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TooManyIdeas
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Location: Albuquerque NM -VEGAS BOUND

Diesel Purging????

#1

Post by TooManyIdeas » 13 years ago

I was goofing around you tube and came across a commercial for this stuff called Liqui Moly Diesel Purge, you can buy this product at Dieselgiant.com Apparently you put it in ahead of the fuel system I saw the commercial for it at
http://www.youtube.com/watch?v=hwCUEjR8ysI

I don't know if I'm retarded for not knowing what this is or maybe its just snake oil, any knowlege
82 Datsun 720 King Cab Diesel - FOR SALE !!!!
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asavage
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#2

Post by asavage » 13 years ago

I've heard a lot of people advocate for Diesel Purge. Two years ago I bought two cans of it and ran them through my '82 Wagon. Summary: no change.

I was hoping for less visible smoke. I still have half a can left, I think. I don't know that I'd recommend the stuff -- but others have said it helped them.

I don't think the stuff can hurt.

Used correctly, you have to use the "pop bottle" method and disconnect both supply and return lines, run the engine on the stuff straight.
Regards,
Al S.

1982 Maxima diesel wagon, 2nd & 4th owner, 165k miles, rusty & burgundy/grey. Purchased 1996, SOLD 16Feb10
1983 Maxima diesel wagon, 199k miles, rusty, light yellow/light brown. SOLD 14Jul07
1981 720 SD22 (scrapped 04Sep07)
1983 Sentra CD17, 255k, bought 06Jul08, gave it away 22Jun10.

odie
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Location: CC, TX

#3

Post by odie » 13 years ago

the Mercedes drivers swear by this stuff.

I'm an old Merc driver myself but have never used the stuff. I'm suspisious of most all that snake oil stuff.

I've tried lots of other stuff...but how does anyone ever really know what it really does unless you pull an injector or what ever it's supposed to clean, closely inspect the part, re-install WITHOUT cleaning, run a can of the snake oil, remove part again and see if it's clean.
1996 VW Passat B4V TDI diesel...main ride
1983 Maxima LD28..sold
1984 Isuzu P'up diesel 4x4..sold
1981 Rabbit diesel - sold
1984 MB 190 diesel - for sale...sold
1987 MB 300TDT diesel...sold
1983 Holiday Rambler 6.2 diesel Banks turbo...sold
1983 Dodge Ram D50 2.3 TD diesel for sale
gas stuff-Jeep, Lebaron, Porsche, Harley

Carimbo
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#4

Post by Carimbo » 13 years ago

I did the pop bottle mainline w/ Seafoam-- little or no results. I didn't like the idea of feeding something to the IP unfiltered.
odie wrote:the Mercedes drivers swear by this stuff.
Possible that the Merc design is more susceptible to CC/injector buildup.

odie
Posts: 114
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Location: CC, TX

#5

Post by odie » 13 years ago

I don't think the designs are all that different...

But I think expecting a bottle to magically undo 20+ years of build-up is stretching it quite a bit. Plus, what exactly is getting built up anyway? Isn't fuel a pretty good solvent/cleaner in it's own right?
1996 VW Passat B4V TDI diesel...main ride
1983 Maxima LD28..sold
1984 Isuzu P'up diesel 4x4..sold
1981 Rabbit diesel - sold
1984 MB 190 diesel - for sale...sold
1987 MB 300TDT diesel...sold
1983 Holiday Rambler 6.2 diesel Banks turbo...sold
1983 Dodge Ram D50 2.3 TD diesel for sale
gas stuff-Jeep, Lebaron, Porsche, Harley

Carimbo
Posts: 459
Joined: 14 years ago

#6

Post by Carimbo » 13 years ago

Appears that the Merc owners use it a lot to fix a "nailing" problem that can occur from carbon buildup on the injector pintle that reduces its effectiveness to seal between injection events, fuel drips into the CC at the wrong time (affecting apparent timing), causes nailing sound.

odie
Posts: 114
Joined: 13 years ago
Location: CC, TX

#7

Post by odie » 13 years ago

so that's what nailing is?

I wounder if every diesel has this carbon build up problem?

What was done before this kind of cure in a bottle stuff?

Was removal and cleaning of carbon build-up a normal periodic maint item for diesels...back in the day?

Or has diesel fuel been improved over the decades to burn cleaner, or at least leave less carbon deposits or have additives...much like many of the gas companies claim in their commercials?

Or regular use of PS Diesel products or the like?
1996 VW Passat B4V TDI diesel...main ride
1983 Maxima LD28..sold
1984 Isuzu P'up diesel 4x4..sold
1981 Rabbit diesel - sold
1984 MB 190 diesel - for sale...sold
1987 MB 300TDT diesel...sold
1983 Holiday Rambler 6.2 diesel Banks turbo...sold
1983 Dodge Ram D50 2.3 TD diesel for sale
gas stuff-Jeep, Lebaron, Porsche, Harley

Carimbo
Posts: 459
Joined: 14 years ago

#8

Post by Carimbo » 13 years ago

odie wrote:Was removal and cleaning of carbon build-up a normal periodic maint item for diesels...back in the day?
You got it. My '82 Maxima FSM lists maint. operation for Clean Injector Tips every 15,000 miles (p. MA-3) and refers to p. MA-27 but the real procedures show up on pp. EF-43-45. Uses a specialized cleaning toolkit that contains brushes, reamers, scrapers, etc. Almost dental.

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asavage
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#9

Post by asavage » 13 years ago

odie wrote:Was removal and cleaning of carbon build-up a normal periodic maint item for diesels...back in the day?
Regular performance of the Italian Tune-Up procedure.

Or use a cleaner-burning fuel, such as biodiesel that meets or exceeds ASTM spec D6751 :)
Regards,
Al S.

1982 Maxima diesel wagon, 2nd & 4th owner, 165k miles, rusty & burgundy/grey. Purchased 1996, SOLD 16Feb10
1983 Maxima diesel wagon, 199k miles, rusty, light yellow/light brown. SOLD 14Jul07
1981 720 SD22 (scrapped 04Sep07)
1983 Sentra CD17, 255k, bought 06Jul08, gave it away 22Jun10.

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