Help!! Our 69.5 with the 170 and a single bbl Carter YF is losing acceleration on the slightest of hills. It starts to flood out, as we push the pedal to the floor to get up any hill, and the car starts to die. It starts and idles great, we think we have the mixtures right, as we don't get much in the way of black smoke out the pipe. When you rev the engine sitting, it roars just fine. Under load (drive or reverse)though, it want's to cut out with the pedal about halfway to the floor....It appears that the curb idle and fast idle are about right. It's when we head up the hill, that it just dies, and floods out.. Any ideas or suggestions????
...no help...but can see why you would need it fixed. where you live...it's uphill both ways... ...Frank...
Is it really flooding out or going lean? Is this going up those huge hills by your house? I'd wonder if the float level is set too high and the fuel is spilling over into the carb through the vent tube. If you get it out on the highway, does it run alright? It's definitely not going to have the same acceleration as it did with that 4.10 gear, but it shouldn't be too bad, and it shouldn't be bogging. Is the kick down on the transmission working right? You been there? He definitely lives up some BIG hills!
Hey Jamie, Yeah, we can't even get around the bend from the house. I took the carb apart, and made sure the float wasn't set to high. It's set at the spec for the YF, but it does want to flood completely when we step on it going up the hill. The choke appears to be working right. I might try setting the float real shallow and see what happens.......we haven't had a chance to get the car up to speed with the 8" rear yet, so I don't know if it's cool or what yet. We spent the last few days putting new brakes and replacing that emergency cable stuff......speaking of which, it appears we have a missing hook guide. Do you know if there are actually supposed to be two hooks on the underside to guide the emergency cable?
My '70 had that problem,it was a bad "sock" in the gas tank.Ran good on flat ground/down hill,acted like it ran out of gas going uphill.
Check the needle and seat, and see if it is in good shape, and has no trash in the bowl, to block the jet. The viton seal on the seat can fall apart and cause the car to flood out, or stick and run the car out of gas.
If it only dies under load then check the fuel pump pressure (especially when going up a hill). It should be between 4 and 8 psi. If the pressure is fine but it dies anyway then you probably have a plugged filter sock in the tank. You can fix this by blowing compressed air in the hose going to the fuel pump from the frame with the gas cap off. If you have more than 1/2 tank you are likely to spill some gas so it is best to do this when your tank is almost empty.
..i don't understand the... ...fuel pump...being a problem...uphill only... (EFI motor, yes/maybe) in the past i have driven cars with the ...fuel pump hose...dissconnected... poured gas in the carb. vent tube to fill the bowl and fired it up... Frank...
Checked the float....no acceleration We pulled the carb apart again. It is getting way too much fuel in the bowl when you step on the gas going under load. It is leaking like crazy out of the carb down the shaft........Not sure what's causing it. It'd be nice if the thing was "see through", so I could see what that float is doing.........I would think the fuel pump would cut out just sitting there stepping on the gas, but it revs up just fine without cutting out. The thing idles fine and doesn't fill up the carb bowl when not in gear under load....I am at a loss other than maybe it's just time for a new carb. This one was rebuilt, but is apparently hosed up........we have not done the timing or tach and dwell as of yet....looks like I have fuel in the tube to the pvs from the carb......
if you mean...PCV.... that's not good...that's a vac. port... if you have gas there you will have gas in the crankcase... ...Frank...
I'm going to stop by there Saturday. We're going to try a spare known good carb I have and get the timing dialed in.
