351w chugging on highway |
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Damo70
Member Joined: 13-April-2010 Location: Melbourne Status: Offline Points: 76 |
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Posted: 12-February-2011 at 11:25PM |
Just found a new problem when I went for an hr drive. When I am cruising at 50mph upwards car feels like it hesitating or there is a fuel blockage. Changed fuel filter, new fuel pump, all the leads are 3 months old and plugs have 500 miles on them? Checked to see if there were loose leads, nothing I can find. Any ideas were to go from here or what I can check? It feels like blocked fuel filter but old one was clean.
Cheers
Damian
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ilyes
Senior Member Joined: 09-January-2010 Location: Philadelphia PA Status: Offline Points: 3782 |
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Timing, carb
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Rockatansky
Senior Member Joined: 30-July-2010 Location: On The Road Status: Offline Points: 6059 |
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is it just a recent pump or did you replace it trying to fix the chugging issue? why the heck do you have a W in Australia?
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Damo70
Member Joined: 13-April-2010 Location: Melbourne Status: Offline Points: 76 |
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Hi there,
They are a fairly common motor out here. Not hard to get parts for either. This has only recently happened, new fuel pump 6 months ago along with new holley 600 vac secondary. I have checked all the leads, adjusted timing from 9 deg to around 7, no change other than even less power now. Checked all the plugs look fine and clean. Leads are all new.
Cheers
damian |
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Damo70
Member Joined: 13-April-2010 Location: Melbourne Status: Offline Points: 76 |
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I have a new holley 600 and have adjusted timing, no change. Cheers Damian |
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Rockatansky
Senior Member Joined: 30-July-2010 Location: On The Road Status: Offline Points: 6059 |
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just because the pump is recent doesn't exclude it from suspicion, i'd do a cranking volume test on it. it's supposed to pump a minimum volume of fuel in a set period of time while you crank the engine
factory manual states 1 pint / 20 seconds @ 500 rpm(cranking speed)
that would be US measure, 16oz http://en.wikipedia.org/wiki/Pint
or it could be a 'dirty sock' in the gas tank. the sock is a pre-filter on the end of the fuel pick-up tube Edited by Rockatansky - 13-February-2011 at 6:35PM |
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occupant
Senior Member Joined: 23-October-2006 Location: Lawton, OK Status: Offline Points: 1973 |
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The shiny brand new looking pump on the 351CJ I bought was useless...wouldn't even pump by hand.
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08 Uplander LS, 262K, broken again
08 Explorer EB, 195K, for the wife still looking for another something |
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