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New M-1083 owner. So, here we go!!

RRaulston

Well-known member
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Location
Sahuarita, Arizona
So all the other damage was done taking it off? On the forward side of the filter where the hard line from the lift pump enters the filter, there is a T fitting. Hook up a 100PSI gauge there and check the base fuel pressure there. You may have a regulator issue or clogged return path to the tank. Should have 10 PSI when cranking, 20 PSI at idle ramping up to 60PSI by peak torque RPM(1400-1500RPM). Not sure how much pressure the lift pump is capable of generating, but too much is probably not too good for a sheetmetal skinned fuel filter…

I show how to hook up one in this video…
So Ronmar, had a little time for truck maintenance and removed the filter/separator on the primer. I had a 1/16" x 1" twig lodged in the flapper.! can't make it up. Used an O-ring pick and removed it. She primes as designed!!
 

Ronmar

Well-known member
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Location
Port angeles wa
Mine had a long spider leg or a horse hair(camel hair?) lodged in it when I got it… probably the most common issue why they won’t move fuel, but they work pretty well when they are working…

 
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