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80' Diesel Pickup Fuel Pump?
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Jared2880
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PostPosted: Mon Oct 13, 2014 5:46 am    Post subject: 80' Diesel Pickup Fuel Pump? Reply with quote

Does a 1980 Rabbit Diesel Pickup have a fuel pump in the tank? I am thinking no. My belief is that the fuel is brought into the engine by the injection pump?

Thanks for responses,
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Jared2880
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PostPosted: Mon Oct 13, 2014 7:17 am    Post subject: Reply with quote

Also, starts up really hard and there is a tone of white smoke. Only way to keep it running is to keep foot on the gas. It will not idle. I hooked up the fuel system to a similar diesel truck and it ran fine. I ran it through my fuel filter. My though is that if there is no fuel pump that there is an air leak in the fuel line or algae build up in the tank?
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Old n' slow
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PostPosted: Mon Oct 13, 2014 7:23 am    Post subject: Reply with quote

No fuel pump in the tank . The injection pump alone draws the fuel from the tank .

I know black smoke is running rich so (maybe) white is lean ?

If running lean try looking for suction leaks in fuel supply lines . Cracks . loose fittings etc.
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stewardc
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PostPosted: Thu Oct 16, 2014 5:47 am    Post subject: Reply with quote

Will it run OK after it warms up a little?
If so, it's glow plugs. Even one bad makes for a hard start and LOTS of white smoke.
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tripicana
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PostPosted: Wed Nov 05, 2014 9:54 pm    Post subject: Reply with quote

Check your timing, white smoke in diesels is usually unburnt fuel from too advanced timing
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air-h2o-air
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PostPosted: Thu Feb 12, 2015 11:28 pm    Post subject: Reply with quote

Jared not 100% positive on a filter/screen in fuel pickup in the fuel tank but I'm betting there is...VW used it in Rabbits...Id assume PUs too
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weisswurst
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PostPosted: Fri Feb 13, 2015 5:08 am    Post subject: Reply with quote

tripicana wrote:
Check your timing, white smoke in diesels is usually unburnt fuel from too advanced timing


100% correct! I just re-timed my 82 1.6na pump in my singlecab vanagon (identical to the rabbit setup) and it stopped running rough at first and stopped
all that scary white smoke I had at startup too. Shocked First time I used my new timing indicator tool and it made a big difference in power too.

I can now break 46 mph! Cool

turns out it was waaaay off from the PO.
jeff
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