I assume you have a wet plate under the carb... This is what I have... If the manifold is sucking hard when you hit the nitrous, then, I do not see how that could happen, because the mixture coming out of the plate is pulled downwards... If the nitrous is hit with no sucking, ie. low RPM, then, I could see how the mixture could splash upwards and possible expand in the carb and cause some problems... Tip: If you flood your car, double check your nitrous activation switch is off before you floor it to get it started... Failure to do this is one of the most common causes of blowing a carb and more...
Carb problem
I found an odd problem with my carb after using new NOS setup. I did a few short blasts just to feel the added power. It drove fine after that for about 45 mins. Then my engine wouldn't hold an idle. Got the car back home and found fuel leaking out of all 4 screws in front bowl (Holley 850 dp). Took front bowl off, found all 4 screws were stripped out, and needle and seat was sticking. Carb hasn't been apart for years, and I never had a problem with it before this. Could my front fuel bowl get pressurized causing all this? No one I've spoken to so far has an answer for this. Any thoughts would be appriciated.
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