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Author Topic: Sucking Air  (Read 3861 times)

January 31, 2010, 04:12:40 pm

dennis

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Sucking Air
« on: January 31, 2010, 04:12:40 pm »
This wonderful experience occurs with my 83 Volvo 245. I can see bubbles in the clear hose from the filter. The filter is full when I remove it. I have replaced the filter also. Has no wet spots anywhere from the tank to the filter. Dropped the tank, and the pickup is clear. I have replaced the feed hose to the filter. Pump is not leaking. Stumped.
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1980 Caddy TD (Always in progress)
1983 Volvo 245 D24 NA Building D24T
1980 Air-cooled Westy
1956 F100 (What to do???))
Reply #1January 31, 2010, 10:11:36 pm

fatmobile

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Re: Sucking Air
« Reply #1 on: January 31, 2010, 10:11:36 pm »
A vacuum gauge on the fuel line will tell you if the pump is pulling hard and bring air out of suspension.
 A full filter can  be a sign it was clogged.
 Air will often stay in a clean fuel filter, because it has a hard time pulling through the diesel-soaked paper.
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Reply #2February 01, 2010, 06:47:14 am

dennis

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Re: Sucking Air
« Reply #2 on: February 01, 2010, 06:47:14 am »
The filter was only a couple of months old. I will drive some today and see what happens.
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1980 Caddy TD (Always in progress)
1983 Volvo 245 D24 NA Building D24T
1980 Air-cooled Westy
1956 F100 (What to do???))
Reply #3February 02, 2010, 02:02:41 pm

dennis

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Re: Sucking Air
« Reply #3 on: February 02, 2010, 02:02:41 pm »
Replaced filter housing with one from an MK1 Jetta. Problem solved 180 miles so far.
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1980 Caddy TD (Always in progress)
1983 Volvo 245 D24 NA Building D24T
1980 Air-cooled Westy
1956 F100 (What to do???))
Reply #4February 07, 2010, 06:59:36 am

ein bora

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Re: Sucking Air
« Reply #4 on: February 07, 2010, 06:59:36 am »
I had a similar problem once with mine, after searching long and hard I found out it was the plastic fuel heater fitting on top of the fuel filter. Installed a o-ring and problem solved. That fitting is only held in place with a spring clip and I guess it wasn't exerting enough pressure on the fitting to seal the hole - hence sucking air. The older filters don't have the fuel heater.
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If you can't take advice - then you can't be helped!
Reply #5February 07, 2010, 03:47:52 pm

dennis

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Re: Sucking Air
« Reply #5 on: February 07, 2010, 03:47:52 pm »
Still running like a scalded slug, but thats a good thing.
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1980 Caddy TD (Always in progress)
1983 Volvo 245 D24 NA Building D24T
1980 Air-cooled Westy
1956 F100 (What to do???))
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