j par
Well-Known Member
The two Holley 625 street demons (not typical Holleys) are starting to give me a little bit of a hard time... I've got to verify my O2 sensor is working correctly. I'm going to try and recalibrate it tomorrow. If that doesn't work it's getting sent back. I had my AF gauge start going crazy and I ordered a new O2 sensor but it was a cheap one from Amazon and I'm suspect of it as well... I've done just about everything to stop the hesitation with standing literally buying a wheelbarrow to pour fuel in... I have the biggest squirters available on the highest setting on the pump shot. I went two stages leaner on the primary Jets that didn't seem to make a difference. I went from the factory step up Springs to the weakest Springs and still cannot get the car lean or close to it... The highest I see on the O2 sensor is 13.2 at idle and drives around at 11 and 10...
I used the direct manifold vacuum Port as it smaller in my gauge plugs in..
Right now I plan on buying the next step smaller primary Jets (I believe the smallest available) and I'll look and see that the biggest metering rods available
That's where the vacuum is at idle on both carbs.. when I goose the gas it drops a little and then goes up another 10 lb or so... I'm reading a relatively study for the cam 13 at idle but it does move around a little bit. It feels pretty good under power but if it's giving it to quick it stumbles. of course it has its moments of greatness when I hurry up just a little bit let go of the clutch and give two it comes on very hard.. I'm just seeing a lot of low numbers on the O2 sensor. Also I've tried various step up Springs and nothing seems to make a difference. The last thing I tried was the weakest Springs hoping they would drop down into the Jets and stop the fuel but no go still rich...
I used the direct manifold vacuum Port as it smaller in my gauge plugs in..
Right now I plan on buying the next step smaller primary Jets (I believe the smallest available) and I'll look and see that the biggest metering rods available
That's where the vacuum is at idle on both carbs.. when I goose the gas it drops a little and then goes up another 10 lb or so... I'm reading a relatively study for the cam 13 at idle but it does move around a little bit. It feels pretty good under power but if it's giving it to quick it stumbles. of course it has its moments of greatness when I hurry up just a little bit let go of the clutch and give two it comes on very hard.. I'm just seeing a lot of low numbers on the O2 sensor. Also I've tried various step up Springs and nothing seems to make a difference. The last thing I tried was the weakest Springs hoping they would drop down into the Jets and stop the fuel but no go still rich...
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Ok. I'll say "throw your A/F gage out the window. That is for good running/performing cars that you are looking for the "fine lining".
