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Old 02-05-2005, 03:18 PM
Registered User
Join Date: Feb 2005
Posts: 2
'79 300 td for sale

Hey there...
Picked this beast up about a year ago... a bit funky but ran great. Started mixing veggie oil in with with fuel with no problem till the filter clogged... changed filters... ran fine. Did this twice. third time it didn't work. Car starts then stalls... or will idle for about ten minutes then dies... or will stall about a block from the house (drove back in reverse). Removed and cleaded lift and hand pump... acts the same.

I think the engine is fine.

Would a faulty overflow valve be responsible? I pulled what I think is this valve...hollow bolt with a spring and plug of some sort... how does one know.

I'm giving up and will accept any reasonable offer for the car. Unless someone can help with ideas on fix.

Also have '69 250 (gas) looks and runs pretty darn well...

Come get 'em in AZ

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Old 02-05-2005, 04:13 PM
The Warden's Avatar
Certified diesel nut
Join Date: Mar 2002
Location: Pacifica (SF Bay Area), CA
Posts: 2,946
Do you have any pics? What sort of shape's the wagon body/suspension/interior in?

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Old 02-05-2005, 04:32 PM
Registered User
Join Date: Jan 2002
Posts: 18,355
I'd suspect you have an air leak in the fuel delivery system somewhere. Try running the car on a small container of diesel in the engine compartment feeding directly into the fuel pump. That will exclude air leaks further upstream.
1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13
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Old 02-05-2005, 05:58 PM
Registered User
Join Date: Nov 2004
Location: Exit 191, I-25
Posts: 124
where in AZ?
Current money-pits:
96 Passat TDI
78 300D 100k miles(60miles/day)FOR SALE
91 Jetta Diesel 250k miles (80miles/day)
82 Toyota Diesel pickup 150k miles; out of service for a little while with a valve problem.
All on BelenBioDiesel
Past diesels:
01 Golf TDI
81 Isuzu P/U
85 Jetta
89 KW 425 cat
85 Pete 400 cat (currently still running the west coast with over 1.5 million miles)
81 KW 400 Cummins
77 Freightliner CO ???? Cummins (Buttercup)
57 180D lots of miles(gone but not forgotten)
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