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Hey all,
I think I've isolated my hessitation problem in my '61 p210. To recap, I've got a b-20 w/ 12 volt electrical conversion in car and a weber 32/36 dgav carb.(the auto choke). I know it's a mixture problem, and here's my hypothesis: The car idles evenly w/ no hesitations. I can floor it in neutral and get no hessitations. It recovers just fine. Lately(the past 4 days), the car's been hessitating rather badly upon acceleration and cruising when I'm applying the gas slightly. The hessitations begin after the initial "low end" of each gear. When I'm going downhill in gear not using the gas, no hessitations, etc. no hessitations when I take my foot off the gas and coast.
So---the past several days have been rather chilly (mid 40's...) Before then, the weather had been mild (60's in the day, 50's at night). The car ran fine when it was mild. Cold is not good!!! I'm guessing what's happening is that as the air is sucked through the small intake, it's getting cooled down way too much because the pressure is high. That's fine when it's warm...you get the "cold air intake" effect, but when it's cold, you get a bad mixture, not to mention ice in the filter. What I propose to do it slap on a larger, round air filter, probably a 10-12" edelbrock, mounted on a riser adapter to the carb. A mechanic friend of mine described the exact same problem w/ his car (same engine and carb, in a '71 142)...when it's warm, the car runs great, when it's cold, no dice. Since I'm heading up to Maine this winter to go to school, I'm thinking of also mounting a heat shield w/ hose fitting to my exhaust headers and running a pipe into the air filter box.....
If anyone has done this little conversion w/ the air filter box or has had the same problem as me, please let me know.
Thanks in advance,
Jay
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