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#1
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Black smoke runs and dies
I have spent some time trying to get my 300d running good. I recently adjusted the valves and set the pump timing. Cleaned the fuel tank and replaced the filters. When i started it in the garage it ran good, but smokey. Took it down the road and it died a block away. Hooked up an inline pump and got it home but died shortly after. This has happened everytime i got the car started. It has two newer injectors. Does this sound like an air leak? Whats the next best step to take?
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#2
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Quote:
An air leak could cause a fuel supply issue. Could be the stock Fuel Supply/Lift Pump and or the Fuel Pressure Relief/Overflow Valve. What color was the smoke and did the smoke smell like fuel or oil burning? Wouldn't hurt to re-check the valve adjustment.
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84 300D, 82 Volvo 244Gl Diesel |
#3
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Definitely smells of unburned fuel. Yes i hooked up an aftermarket inline pump. When the car died i had my girlfriend pump the primer and it would run until she stopped pumping. The lift pump seems to work fine, doesn't leak. Where is the bypass valve?
I will recheck the valves when i get time. |
#4
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The bypass valve looked good, ball was seated. Although tthe valve was a bit rusty. Also a lot of pressure (mostly air) came out. I'm thinking I'll hook clear lines to a fuel can and see what happens
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#5
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How's your air filter looking?
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1978 300D, 373,000km 617.912, 711.113 5 speed, 7.5mm superpump, HX30W turbo...many, many years in the making.... 1977 280> 300D - 500,000km+ (to be sold...) 1984 240TD>300TD 121,000 miles, *gone* 1977 250 parts car 1988 Toyota Corona 2.0D *gone* 1975 FJ45>HJ45 1981 200>240D (to be sold...) 1999 Hyundai Lantra 1.6 *gone* 1980s Lansing Bagnall FOER 5.2 Forklift (the Mk2 engine hoist) 2001 Holden Rodeo 4JB1T 2WD |
#6
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Air filter is newish. I got the car to start and stay running now, using a fuel can. It runs rough so i think i should do a compression test.
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#7
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Remember to check the valve clearances before the compression test. That's if you have not already. You saw some rust in the relief valve? You may have a piston stuck at the top of its stroke in the injection pump if the car sat around a lot before you got it. Do the other things first.
Last edited by barry12345; 09-10-2016 at 10:17 AM. |
#8
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One of the issues with cars from the snow belt is under car rust. The fuel line is steel & subject to rust. The latest roadway de-icing technique of using a beet juice brine mix on the roads has caused some issues with steel lines held to the floor pan &/or frame. It seems to seep into the space between the clamp and the line causing pin holes. I have a w126 in the shop with a similar fuel delivery issue. The lines are pin-holed at every clamp. The car limped in using an electric pump between the tank & first filter. (sound familiar?) I would still check out the remainder of the fuel system for rusty bits & injector/injection pump issues (re-check the valve adjustment, too). It sure sounds like you have a fuel delivery issue.
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