- Local time
- 8:01 PM
- Apr 24, 2020
- Reaction score
Absolutely. If someone can’t make a car respond appropriately when stuffing the pedal to the floor hard at any and all speeds -and- have it perfectly driveable there’s something wrong. They did it from the factory, not much of a stretch to expect it when altered a bit.Well lets see....
I dont race.
I drive on the street and I have a large slightly modified internal combustion engine that should be quite capable of accelerating without an off idle bog.
Maybe I am screwing up my car, but if so I am doing it while requesting help from folks more knowlegeable than me.
I changed the "squirters" (accelerator pump jets) because I read somewhere that an off idle stumble could be a lack of fuel provided by the accelerator pump and larger "accelerator pump jets" (geez I hope that is the correct term) would help. I did it over 2 years ago and it's the only time in my life that I have ever done it and I recall that they were designated with a number but, silly old me, I don't remember the number and didn't feel like yanking them back out of the carb unless it is required to help my problem.
Most of the comments are in about the right direction. Initial timing could be a bit higher, maybe 16-18 (but keeping total at 36-38). Should be able to fit a thin (.002) feeler gauge between the cam and pump lever at idle (no preload). Squirters can go bigger and accel pump can go to a 50cc but that really shouldn’t be required. If secondaries open too quick it can cause this bog. (No ball and white spring for example).
Other less common stuff is starting lean because carb shafts are worn/leaky. Another is the pump check not working well. Old ones had a ball in there newer have a rubber diaphragm. The diaphragm works a little better.