I cleaned the carbs, have the idle screws 1.5 turns out and synced the carbs today. That new carb sync gauge set I got worked wonders... it was really easy. Got them all in line in a matter of minutes.
So onto the problem. It sounds good, but I have a bad ear so I don't trust it, on a whim I put one of those non contact temp guns on each header pipe and #4 was pretty cold... was waayy colder than the rest of them. 1-3 where 600F and #4 was 250F. WTF! I did a leakdown test and everything looked good, only 3% loss. So I put my colortune on #4 and it was sparking but no color, no gas. Put it on #1 and it was the right orange/blue color. I had to turn the idle screw on #4 out almost 5 turns to get it gas and the right color.
So I know I have to take the carbs back off, but what should I check? The float height and pilot jet?
So onto the problem. It sounds good, but I have a bad ear so I don't trust it, on a whim I put one of those non contact temp guns on each header pipe and #4 was pretty cold... was waayy colder than the rest of them. 1-3 where 600F and #4 was 250F. WTF! I did a leakdown test and everything looked good, only 3% loss. So I put my colortune on #4 and it was sparking but no color, no gas. Put it on #1 and it was the right orange/blue color. I had to turn the idle screw on #4 out almost 5 turns to get it gas and the right color.
So I know I have to take the carbs back off, but what should I check? The float height and pilot jet?
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