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Old 04-20-2011 | 09:33 PM
  #1229  
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deadmancourt
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Originally Posted by bigmatt
Flanno,thats what I meant when I said it [the idle] went erratic. Didn't matter what temp the engine was it just went to crap again. And I believe it's from a leaking front bearing. The engine will not hold a tune at all. As far as it keeping it at 220 I should have said 220ish. Which means 220-250,not 250-290 where it was when I shut it down. They other thing I noticed was when I would fill it full of fuel the idle wanted to come down so something is amiss. I have never had a engine do that[fill with fuel idle down] the only thing I found was the air leak in the front bearing. And what I find puzzling is how some people say leaking front bearing is okay,I've had 1-2 that dribbled a little fuel at first but none of them let air by. All my needles were set back to stock. The idle needle was moved back to it's original position.
I don't adjust my engines to a specific temp but was taking the readings more as a reference mark.
if the idle drops once fuel tank is filled, you are too lean on top and maybe a tad lean on bottom....i just went through this tonight at the track..fattened both needles by a couple hours and it ran flawlessly all night....when the tank is low..it takes alot of pressure to pump fuel into the motor...so thats why it is idling eratic...maybe even turn the idle down, just a tad...trust us...the leaky bearing is not causing this problem
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