Hello guys,
I noticed my 1970 Chrysler Newport with 383 engine and 2 barrel Carter BBD has always had a very minor hesitation/jerking upon a certain part throttle while usually cruising . I'd like to finally figure out if this is just a thing this particular engine carb combo does (I've heard this from another member) or if this is something I can resolve. Stock engine, original air cleaner in place, rebuilt carb, dual exhaust.
What happens exactly is at part throttle while cruising, the RPMs go up and down just enough to feel like you are going against a strong wind gust head on, on and off. Not terribly noticeable but enough to be annoying. It goes away if you step on the throttle a bit more. The car idles nicely. 18 inches of vacuum. Has plenty of power at full throttle. I've tried richening up the mixture screws just a bit to see of that would help but no luck. Any advice?
I noticed my 1970 Chrysler Newport with 383 engine and 2 barrel Carter BBD has always had a very minor hesitation/jerking upon a certain part throttle while usually cruising . I'd like to finally figure out if this is just a thing this particular engine carb combo does (I've heard this from another member) or if this is something I can resolve. Stock engine, original air cleaner in place, rebuilt carb, dual exhaust.
What happens exactly is at part throttle while cruising, the RPMs go up and down just enough to feel like you are going against a strong wind gust head on, on and off. Not terribly noticeable but enough to be annoying. It goes away if you step on the throttle a bit more. The car idles nicely. 18 inches of vacuum. Has plenty of power at full throttle. I've tried richening up the mixture screws just a bit to see of that would help but no luck. Any advice?