My 64 Galaxie with the 352 and autolite 4100 runs great. I've adjusted the idle mixture screws with the vacuum gauge and a tach dwell meter. If I turn the screws in the engine stalls. I have them about 2 1/4 turns out. After that it seems the idle does not change or get rough if I keep turning them out. No vacuum leaks, timing set correctly and curb idle set to specs.
HEY CARB EXPERTS; i just bought a 76 F150 with either 360/390 2 barrel carb auto with driveability problems; SYMPTOMS; it had no heat riser under the aircleaner springloaded flapper it also had a brake light on in dash and weakish non power brake feeling also had a badly cracking brake boooster hose also had an off idle stumlwe/hesitation that could would stall if not carefully feather accelerator. has broken ex manifold bolts and leaks exposing soot shooting out, same for exhaust, its leaking and noisy and soot oozing out SO i replaced the brake booster hose hoping to fix the brake light AND off idle stumble TLDR; it didt, it made things worse actually, idles poorly now and stumble is worse did more inspecting underneath and found rear brake hard line crushed and leaking which backs up the master cylinder being low on small resevoir for back brakes i couldnt see in Carb to see if accelraotr pump works but it sounded like fuel squirting when i pumped the throttle Accel pump linkage seems stiff and instantly engages with throttle movement SO whats first thing to start checking carb out to fix idle and off idle accel stumble?
My truck will run but will eventually stall out and then will not start I suspect a vacuum or vapor block from the gas tank. Could the vent at the gas tank cause this?
If you open the gas cap and hear a suction "woosh" its possible. However it sounds like yours is flooding. Maybe too much gas. Carburetor float not set right, needle not closing. Etc. Choke not opening. Carburetors are way simpler than people give them credit for. However they are hard to explain in a simple way. When it stalls, will it start by holding the pedal all the way to the floor? If yes, its flooded. If not, maybe rust in the gas tank.
This is the clearest explanation of air/fuel adjustment I've ever heard. Period. Well done!
GREAT VIDEO!! Thanks for explaining things that make them easy to understand!! Young guy working on old cars is a good thing!!! Cheers
Appreciate that you made this video and have done your best to explain a carb adjustment.
Thanks for explaining carburetors You made it very simple to understand I really appreciate it
My 64 Galaxie with the 352 and autolite 4100 runs great. I've adjusted the idle mixture screws with the vacuum gauge and a tach dwell meter. If I turn the screws in the engine stalls. I have them about 2 1/4 turns out. After that it seems the idle does not change or get rough if I keep turning them out. No vacuum leaks, timing set correctly and curb idle set to specs.
Perfect simple but real, explanations. 🇨🇦👍🏼
Great video and very helpful
what do i hook it up to if i dont have a break booster
HEY CARB EXPERTS; i just bought a 76 F150 with either 360/390 2 barrel carb auto with driveability problems;
SYMPTOMS;
it had no heat riser under the aircleaner springloaded flapper
it also had a brake light on in dash and weakish non power brake feeling
also had a badly cracking brake boooster hose
also had an off idle stumlwe/hesitation that could would stall if not carefully feather accelerator.
has broken ex manifold bolts and leaks exposing soot shooting out, same for exhaust, its leaking and noisy and soot oozing out
SO i replaced the brake booster hose hoping to fix the brake light AND off idle stumble
TLDR; it didt, it made things worse actually, idles poorly now and stumble is worse
did more inspecting underneath and found rear brake hard line crushed and leaking which backs up the master cylinder being low on small resevoir for back brakes
i couldnt see in Carb to see if accelraotr pump works but it sounded like fuel squirting when i pumped the throttle
Accel pump linkage seems stiff and instantly engages with throttle movement
SO whats first thing to start checking carb out to fix idle and off idle accel stumble?
My truck will run but will eventually stall out and then will not start I suspect a vacuum or vapor block from the gas tank. Could the vent at the gas tank cause this?
If you open the gas cap and hear a suction "woosh" its possible. However it sounds like yours is flooding. Maybe too much gas. Carburetor float not set right, needle not closing. Etc. Choke not opening. Carburetors are way simpler than people give them credit for. However they are hard to explain in a simple way. When it stalls, will it start by holding the pedal all the way to the floor? If yes, its flooded. If not, maybe rust in the gas tank.
My 390 2bbl 2100 went got up to 25
For max vacuum