My '89 3.0 alpha 1 with a 2bl mercarb wasn't running right after sitting for a summer, It wouldn't run smooth or idle so I rebuilt the carb, it was very dirty and one of the throttle plates was badly bent. I had it cleaned in a sonic cleaner, blew out all the passages, had to fine wire ream one venturi bore and got the plate back in shape so it looks and fits just like the other one. I used the spring style float needle.
Now it will start and run but only at 2500 rpm's or more.
I've pulled it several times, re-checked the whole procedure, triple checked the float settings, backed the new idle "needle" screw out 1_1/2, set the choke unloader setting to 5/64, and backed the idle stop screw totally out. I noticed the throttle plates do not completely close off the openings...I can see just a sliver of a gap thru them when I held 'em up to the light and thought that was normal.
It starts pretty easy with a few throttle squirts but will not keep running unless I throttle it up to at least 2500. I can see it feeding fuel at that speed but not any lower.
It's like there is no fuel at all coming thru the idle circuit?
I don't know how to check that or what to do next......please help!
Now it will start and run but only at 2500 rpm's or more.
I've pulled it several times, re-checked the whole procedure, triple checked the float settings, backed the new idle "needle" screw out 1_1/2, set the choke unloader setting to 5/64, and backed the idle stop screw totally out. I noticed the throttle plates do not completely close off the openings...I can see just a sliver of a gap thru them when I held 'em up to the light and thought that was normal.
It starts pretty easy with a few throttle squirts but will not keep running unless I throttle it up to at least 2500. I can see it feeding fuel at that speed but not any lower.
It's like there is no fuel at all coming thru the idle circuit?
I don't know how to check that or what to do next......please help!