LD Smoke on acceleration

Discuss (and cuss) the Nissan LD-series OHC Six diesel engine, popularly available in the US in 1981-83 Datsun/Nissan Maxima Sedans & Wagons.

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nissan_nerd
Posts: 16
Joined: 1 year ago

LD Smoke on acceleration

#1

Post by nissan_nerd »

Whenever I accelerate from a stop in my LD Maxima, a giant cloud of smoke flys out of my exhaust. Air filter and fuel filter are new, and I cleaned out the intake grunge. I am do for a valve adjustment (taking care of it next week), but still kind of stumped.

I heard these IPs have an internal vein lift pump that stops working resulting in no injection timing advance. Is it possible to use an external electric lift pump to solve this?
1982 Maxima Diesel
1984 Maxima Gasser
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dieseldorf
Posts: 192
Joined: 17 years ago
Location: Oracle, AZ

Re: LD Smoke on acceleration

#2

Post by dieseldorf »

Your lift pump is OK, otherwise your engine would not start or die soon after. Most likely you have leaky/worn injectors.
Astro Van with LD28 propulsion
'84 Mercedes 190D 2.2L 5-Speed Manual purchased 06/12 SOLD 06/13
'86 Ford Escort Wagon Diesel MT Sold 07-17-08
nissan_nerd
Posts: 16
Joined: 1 year ago

Re: LD Smoke on acceleration

#3

Post by nissan_nerd »

dieseldorf wrote: 9 months ago Your lift pump is OK, otherwise your engine would not start or die soon after. Most likely you have leaky/worn injectors.
Is there any way to service them? All parts seem to be NLA for years now…
1982 Maxima Diesel
1984 Maxima Gasser
User avatar
dieseldorf
Posts: 192
Joined: 17 years ago
Location: Oracle, AZ

Re: LD Smoke on acceleration

#4

Post by dieseldorf »

Try to locate Bosch Diesel Service in your area. Otherwise contact these guys: https://dieselcare.store/
A few years ago, they quoted me $60.00 a pop, to rebuild the injectors, incl. new nozzles.
Also, I would use fuel additive to lubricate and clean the IP and injectors. Search this forum for EGR delete. It might help with smoking.
Astro Van with LD28 propulsion
'84 Mercedes 190D 2.2L 5-Speed Manual purchased 06/12 SOLD 06/13
'86 Ford Escort Wagon Diesel MT Sold 07-17-08
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