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post #1 of 3 Old 10-19-2012, 04:25 PM Thread Starter
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no rpms

have taken my 85 lx 4 cyc and transplanted 90 gt 50. gone with efi . chanced all fuel lines and wiring, new fuel filter. went for test drive, cranks and idles fine, rpms go up fine, but when it warms up can't get more than 3000. acts like it's not getting enough fuel. what can be wrong? can fuel lines be hooked up backwards are what. timing is 10 degrees, donor car ran just fine, so i know i have put something in wrong, but don't know what. HELP PLEASE.

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post #2 of 3 Old 10-21-2012, 08:47 PM
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Pull codes. Fuel lines could be backwards yes, check that.


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post #3 of 3 Old 10-30-2012, 04:03 PM
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what is fuel pressure

pro pony's corral:1990 434,vortech
89 lx 60k miles no mods:1968 408 roller,6 spd 69k
90 306 all the bolt ons: 89 'vert all stock:2011
87 2.3 'vert"real muscle"89 5.0 'vert stock
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