 Another fuel pressure question, Diagnosis help please |
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| boiledcabbage |
 Sep 4 2012, 03:17 PM
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#1
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Member  Group: Members Posts: 50 Joined: 23-May 05 From: Ottawa, Canada Member No.: 4,131  |
Tracking a performance problem on my stock 74 1.8 FI and would appreciate any thoughts:
Sluggish in 3rd and above and wondering if fuel is the issue. starts and idles well,good compression, recent tuneup and valve adjustment although I did it myself... 32psi at idle, 29psi at 3000rpm measured at the CSV, volume only 1.0 liter perminute, no visible kinks or bundle in the tank. Any thoughts? I will be double checking the vacuum advance and timing just in case... |
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| Mike Bellis |
Sep 4 2012, 09:04 PM
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#2
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Resident Electrician Group: Members Posts: 8,347 Joined: 22-June 09 From: Midlothian TX Member No.: 10,496 Region Association: None 
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I once had a fuel filter with a blockage that would only manifest above 3000rpm. When I pulled it apart, I found a large aluminum burr left over from the manufacturing process. As the volume of fuel increased, it would push the burr into the outlet and block the flow. Took me forever to find it.
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Posts in this topic
boiledcabbage Another fuel pressure question Sep 4 2012, 03:17 PM
underthetire And check the mechanical advance as well. Sep 4 2012, 03:25 PM Dave_Darling One liter per MINUTE? That sounds like a seriousl... Sep 4 2012, 04:26 PM boiledcabbage Thanks Dave -no I really did mean 0.5l in 30 secon... Sep 4 2012, 04:30 PM SLITS Spec is 50 - 62 L/hr .... 0.83 - 1.03 L/min .... b... Sep 4 2012, 04:53 PM
boiledcabbage
Spec is 50 - 62 L/hr .... 0.83 - 1.03 L/min .... ... Sep 4 2012, 05:08 PM Dave_Darling Crap, I had the units wrong! Thanks for check... Sep 4 2012, 08:24 PM pilothyer Although your fuel pressure regulator seems to be ... Sep 4 2012, 09:39 PM boiledcabbage
Although your fuel pressure regulator seems to be... Sep 6 2012, 05:51 PM |
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