#1  
Old 06-12-2021, 06:54 PM
davidgto davidgto is offline
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Default Running rich

Just put a completely rebuilt tripower unit on my 65 GTO. Car seems to be running very rich with blue smoke out the exhaust. Do I have a float setting problem? Any ideas appreciated.

  #2  
Old 06-12-2021, 10:50 PM
Goatracer1 Goatracer1 is offline
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Blue smoke is generally oil smoke. What is your fuel pressure? It should not be over 6 psig. Do you see any signs of fuel leaking from the float bowl?

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Old 06-12-2021, 11:02 PM
davidgto davidgto is offline
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No fuel leaking from carbs that I can see, but I did just change oil and started using Valvoline VR1. The oil change and carb change happened at the same time before the first test run.

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Old 06-13-2021, 10:30 AM
wbnapier wbnapier is offline
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Is it running rich at idle, under load, WOT, all the time? Is the choke butterfly working ok?

Is the jetting and idle mixture set properly for the engine?

You can have an O2 sensor installed and know for sure what your AFR is and go from there.

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1965 Pontiac GTO
455/469 w/ #48 Heads, '65 Tri-Power
9.25:1 CR
Stump Puller Cam
Muncie M22W 1st-2.56 2nd-1.75 3rd-1.37 4th-1.00
3.55 Rear Differential
Front: 225/60R15 Height: 25.6"
Rear: 275/60R15 Height: 28"
  #5  
Old 06-13-2021, 11:51 AM
davidgto davidgto is offline
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We have had some family health issues and I have had no opportunity to get back on the car since the initial run after the changes I mentioned. Fellows, I appreciate the opinions and suggestions and will follow up soon, I hope.

  #6  
Old 06-14-2021, 03:56 PM
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Dick Boneske Dick Boneske is offline
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Blue smoke may be residual oil in the exhaust system if you've recently done engine work. It takes quite a lot of running time to eliminate that.

How does the engine idle? Pull a plug and see if it's black.

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  #7  
Old 06-16-2021, 04:50 PM
davidgto davidgto is offline
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The dummy, me, left a set of old air filters on the unit. I think they were some what clogged up. Put new filters on, and it seems to be doing much better.

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