Well, I just learned something.
gas not getting to carb??help!!!
- Thread starter 59ponchorat
- Start date
Help Support Rat Rods Rule:
Well, I just learned something.
rainman
Rough Rodder
Double check that filter, it could have stopped up quickly with all the trash!!
Also was the hose you used fuel line?? If it wasn't it would collapse a lot easier, not being reinforced!!
Also was the hose you used fuel line?? If it wasn't it would collapse a lot easier, not being reinforced!!
59ponchorat
Well-known member
update got caddy running,,now its idling way too high....
took fuel filter off and hooked hard gas line back up..i guess the rubber hose was collapsing..so now its running but idling way too high..where do i start,and what all do i check with this issue...
took fuel filter off and hooked hard gas line back up..i guess the rubber hose was collapsing..so now its running but idling way too high..where do i start,and what all do i check with this issue...
Blue Eyed Devil
Devil's Advocate
Adjust the carburetor.
sgtpontiac
Older, Wiser and Still Buildin'
Yep....start with the idle speed screw...
the one near the throttle side of the linkage....then when you get that adjusted down, use the idle mixture screws to get the best idle...i.e. roughness and idle speed..then readjust the idle speed screw.... couldn't remember the year of the car so the pics are for an afb and a rochester...
should show the idle speed screw on the linkage side and maybe a bit of the idle mixture screws on the front...not sure if that helps....if it has a quadrajet it will be the same anyway...as on most vehicle....
If the idle speed screw doesn't do it then something is holding the throttle blades open...choke linkage, crud around the blades, or possibly a vacuum leak..... hope it helps some.....
the one near the throttle side of the linkage....then when you get that adjusted down, use the idle mixture screws to get the best idle...i.e. roughness and idle speed..then readjust the idle speed screw.... couldn't remember the year of the car so the pics are for an afb and a rochester...
should show the idle speed screw on the linkage side and maybe a bit of the idle mixture screws on the front...not sure if that helps....if it has a quadrajet it will be the same anyway...as on most vehicle....
If the idle speed screw doesn't do it then something is holding the throttle blades open...choke linkage, crud around the blades, or possibly a vacuum leak..... hope it helps some.....
Attachments
rainman
Rough Rodder
Check and make sure it's not the fast idle on the choke thats making it idle high!!
59ponchorat
Well-known member
another update!!
messed around with the idle screw thats located near the linkage..got it idled down close to where it needs to be but its idling really rough,especially when its in gear...whats my next step???
messed around with the idle screw thats located near the linkage..got it idled down close to where it needs to be but its idling really rough,especially when its in gear...whats my next step???
Blue Eyed Devil
Devil's Advocate
Have you tuned this thing up? Plugs, wires, cap, rotor, points & condenser, set the timing, etc.??
59ponchorat
Well-known member
that was suppose to be done before i got it but i may get some new plugs and new points or atleast reset the points....
59ponchorat
Well-known member
thinking maybe the plugs may be fouled....
59ponchorat
Well-known member
Blue Eyed Devil
Devil's Advocate
Have you pulled a plug after the engine is hot and read it?
59ponchorat
Well-known member
nope,not yet..i was just excited to finally get it running,then the high idle,then the rough idle..i will tom. and see what they look like..
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59ponchorat
Well-known member
it looks as if its had a complete tune-up..the plugs look pretty black,looks like soot...where do i go from here??
TiredIronGRB
Traditionalist
Check to make sure you don't have a vacuum leak on the carb, with it idling high and running rough after you set the idle down it sounds like that's the problem.
59ponchorat
Well-known member
its kinda spark knocking for a second when i hit the switch and cut it off...
sgtpontiac
Older, Wiser and Still Buildin'
That's called run on or dieseling.....caused by
to high an idle.... could there be wires crossed causing the idle..wrong firing order.... if it's got a vac leak, you should be able to tell by covering the carb throat with your hand and it should either smooth out or if there is no vac leak it will want to stall out....
High idle speeds will cause it to "diesel" and run on (sounds like spark knock) when you shut it off...try the carb thing and see what happens..or just spray some carb cleaner in the throat of the carb...if it smooths out or idles higher it's got a major vac leak.....
keep us advised....cool ride though....
to high an idle.... could there be wires crossed causing the idle..wrong firing order.... if it's got a vac leak, you should be able to tell by covering the carb throat with your hand and it should either smooth out or if there is no vac leak it will want to stall out....
High idle speeds will cause it to "diesel" and run on (sounds like spark knock) when you shut it off...try the carb thing and see what happens..or just spray some carb cleaner in the throat of the carb...if it smooths out or idles higher it's got a major vac leak.....
keep us advised....cool ride though....
rainman
Rough Rodder
Sounds like the carb needs to be taken apart and cleaned, with the problems you've had getting fuel to the carb, I'd be shocked if it didn't have at least a little bit of junk in the carb filter!!!
Kind of sounds like it's loading up which would explain all but the fas idle!!
Kind of sounds like it's loading up which would explain all but the fas idle!!
59ponchorat
Well-known member
covered the carb with my hands and it cut off immediately...maybe i need to just get a new carb or have this one built???
440shorty
Well-known member
stall test
That the engine stalled immediately when you covered the carb is good - no vacuum leaks. Has the carburetor been rebuilt? If it has not for years, the gaskets may have dried up and now aren't sealing well. It really should be rebuilt. According to my 1965 Motors manual, it could have a Carter AFB or a Rochester 4GC.
That the engine stalled immediately when you covered the carb is good - no vacuum leaks. Has the carburetor been rebuilt? If it has not for years, the gaskets may have dried up and now aren't sealing well. It really should be rebuilt. According to my 1965 Motors manual, it could have a Carter AFB or a Rochester 4GC.
