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AC MKIV Fuel Filter

Started by lonzcllns, August 07, 2010, 02:27:59

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lonzcllns

I've decided it's time to replace the fuel filter on my 1985 AC MKIV (AK1058).  It appears to be a generic fuel filter that I could pick up at most auto supply stores.  The fuel line at the rear appears to be approx. 5/16" (7.93 mm) in diameter.  Does anyone who has changed the filter on their MKIV have any installation tips?

Mark IV

Lonnie,
   
   see my reply on ClubCobra....

ANF289

quote:
Originally posted by lonzcllns
   
I've decided it's time to replace the fuel filter on my 1985 AC MKIV (AK1058).  It appears to be a generic fuel filter that I could pick up at most auto supply stores.  The fuel line at the rear appears to be approx. 5/16" (7.93 mm) in diameter.  Does anyone who has changed the filter on their MKIV have any installation tips?
   

   
   There are 2 filters on fuel injected cars (may be different for cars with carbs): a 20 micron Fuel Filter (NAPA 3012) at the tank outlet and a 3-10 micron Fuel filter (NAPA 3097) located opposite from the fuel pump on the passenger side.
   
   Flow Diagram: Tank – 2" fuel hose (all 5/16 dia) - 20u Fuel filter - 10" fuel hose – copper tube – 3" fuel hose – 3-10u Fuel filter – 14" fuel hose – copper tube – 12" fuel hose – Fuel Pump – 10" fuel hose – copper tube – Engine.
   
   1) Siphon gas from tank.
   
   2) Clamp hose descending from In-line 20 micron Fuel Filter (NAPA
   3012) @ tank outlet, detach hose at copper tube, and drain remaining gas into gas container.
   
   3) Detach fuel hose from 3-10 micron Fuel filter (NAPA 3097) and drain remaining gas into container.
   
   4) Replace filters and all old hoses [NAPA 4219LC Fuel Hose PCV/EEC 5/16 inch (8 mm)]
   
   5) Refill gas tank.
   
   Note that fuel injected cars use high-pressure hoses downstream from the pump.