heard this one yet????

[Steeveedee]

Do you still have the instructions from the kit? Float level and float drop are both specified there. You can look those specs up in the manuals that are posted here.

[BRL]

Movie: "Lawn Mower Man."

Billy Bob Thornton...

"Have you checked the float level?" ...

[Missourimark]

Does it have power with wide open throttle, if so probably not fuel filter or obstruction. Sucking sound at 40 mph , if its got power it may be a vacuume leak, do you have power brakes ? If so, do they feel normal, timing ok , distributor bolt tight ? Timing could be retarded. So many things it could be.

[stevenfromtexas]

Originally Posted by Missourimark

Does it have power with wide open throttle, if so probably not fuel filter or obstruction. Sucking sound at 40 mph , if its got power it may be a vacuume leak, do you have power brakes ? If so, do they feel normal, timing ok , distributor bolt tight ? Timing could be retarded. So many things it could be.

yes sir, accelerates great!!
no power brakes
Distributer bolt is tight

[Missourimark]

I had a 250 in a 1967 c10 years ago and the timing gear was going out it ran but not great , you can check yours easy , by popping the cap off and rocking the crank back and forth.

[Metaldoc]

I check for vacuum leaks with a propane torch, unlit with gas just on. Start the engine and wave the torch end gas around the possible vacuum leak areas. All the intake, carb, vacuum ports, all of the intake system. If the RPM's go up in any location there is a leak. But it does sound like you're starving for gas. Any black smoke after it picks up out of the exhaust?

[stevenfromtexas]

Originally Posted by Metaldoc

I check for vacuum leaks with a propane torch, unlit with gas just on. Start the engine and wave the torch end gas around the possible vacuum leak areas. All the intake, carb, vacuum ports, all of the intake system. If the RPM's go up in any location there is a leak. But it does sound like you're starving for gas. Any black smoke after it picks up out of the exhaust?

ill try that. no sir, no black smoke.

so, i opened the carburetor up this morning and floats were dead on. i did however see that one of the gaskets was covering partially one of the vacuum holes that goes to the advance fitting that goes to the distributer. i used the other gasket that looks identical but that particular hole in the other gasket did not block the vacuum hole. drove it and not sure if its coincidence or not after a cleaning or the gasket change, it doesn't stumble/ die anymore when decelerating and/or turning......

BUT......

i still have this sucking and sputtering going on. 1, 2 and 3rd

i know i mentioned this issue around 40MPH but it is with about a quarter of the pedal pushed. the response is great if i mash on it but i'm not a "mash on it" guy. i prefer to putz around but the quarter pedal makes this guy "suck" and sputter. about half pedal its great, but that poses a problem driving down my street.....hahaha sorta don't want to run anybody over

this little 250 wants to be a big guy sooo bad...

[Steeveedee]

OK, looks like you got a vacuum advance issue corrected, but still may have a vacuum leak. Can we get a clip of what it sounds like running?

[stevenfromtexas]

Originally Posted by Metaldoc

I check for vacuum leaks with a propane torch, unlit with gas just on. Start the engine and wave the torch end gas around the possible vacuum leak areas. All the intake, carb, vacuum ports, all of the intake system. If the RPM's go up in any location there is a leak. But it does sound like you're starving for gas. Any black smoke after it picks up out of the exhaust?

tried the propane trick. i couldn't hear any change in RPM

[weq92f]

I had a 350 v8 once that would die when turning. Turned out to be a very worn and sloppy distributer. I think what was happening was a combination of things:

o letting off the throttle
....-- this brings on full vacuum advance
o applying the boosted brakes
o turning the truck fairly swiftly causing loss of spark or spark timing and a stall.

Replaced the dizzy and did not have any further issues with unwanted stalling. Not sure if the mechanical advance was being activated by the turning of the vehicle or if somehow spark was not getting into the plug wires due to some internal dizzy movement or fault. But it was definitely the dizzy and it was only doing it when turning.

Hth,

-klb

[57rookie]

My first thought was fuel filter. Since that has been addressed it has to be one of the two following: needs a carb rebuild or reman carb - if you don’t want to do this I would adjust the idle screw(s). When engin warmed up turn the idle screws out one at a time until you feel the engine running ruff then turn back a half turn. Do this for both the left then right side for an v8 engine carb and it will give you good air/fuel mixture. If this is not it then it needs either plugs or wires or both.

[stevenfromtexas]

Originally Posted by 57rookie

My first thought was fuel filter. Since that has been addressed it has to be one of the two following: needs a carb rebuild or reman carb - if you don’t want to do this I would adjust the idle screw(s). When engin warmed up turn the idle screws out one at a time until you feel the engine running ruff then turn back a half turn. Do this for both the left then right side for an v8 engine carb and it will give you good air/fuel mixture. If this is not it then it needs either plugs or wires or both.

thank you very much for your reply.... i have a straight 6 with single barrell rochester (250). i've actually got everything running really well now.

thank you so much for your reply.

[Benjamin]

Great thread! Feel-good story of the year.

[stevenfromtexas]

Originally Posted by Steeveedee

Do you still have the instructions from the kit? Float level and float drop are both specified there. You can look those specs up in the manuals that are posted here.

yes sir i do. ill open it up in the morning. wouldn't hurt to clean it all up again any way......single barrel takes all of 5 minutes to remove, tear down, clean, rebuild and install hahaha