Air in the fuel?? - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 6 (permalink) Old 02-12-2012, 02:09 PM Thread Starter
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Air in the fuel??

My Ford tempo with the Mazda RF diesel ain't been running right last few days. Starts fine, idles fine, but when I get 1/8-1/4 mile from home I lose power and bout dies then it will take off and run $hi**y for awhile but by the time I get to the edge of town (~7miles) runs fine.

I fired it up friday and you can see air bubbles rolling thru the line from the fuel filter to the IP.

What would cause this?
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post #2 of 6 (permalink) Old 02-28-2012, 04:20 PM
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all it takes is one tiny fitting/hose with a tiny vacuum leak. could be seal on pump shaft?

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post #3 of 6 (permalink) Old 02-28-2012, 11:08 PM Thread Starter
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so whats the best way to fix it?

Lift pump???
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post #4 of 6 (permalink) Old 02-29-2012, 03:43 AM
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Tighten all the fittings on the suction side, look for worn shaft seals. If you don't find any loose fittings then maybe pull the line off the pump, block it at the fuel tank and then pressurize it gently maybe 5-15 psi and see if you can make it leak.

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post #5 of 6 (permalink) Old 10-04-2012, 04:23 AM
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ever find anything?

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post #6 of 6 (permalink) Old 03-12-2013, 06:48 PM Thread Starter
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I put a little electric diaphragm pump in the trunk above the tank

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1984 Ford Tempo GLX
2.0L Mazda RF diesel (factory)
140k miles and counting
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