Too heavy on fuel

Your carb is needing to be rebuilt the seals and float and valve seat may be damage. The float opens when the fuel level in the carb is low. If the valve seat is damaged or the float is not working. Gas can keep pouring into the carb resulting in extra fuel. Till the engine stops and fuel pump pressure stops pushing fuel it will keep pouring fuel and will not stop till rebuilt correcting the problems. Buy rebuild kit and rebuild it or try junkyard and replace it.

tuning a carb is only getting the air/fuel mixture correct and has nothing to do with power. If you want more power consider bigger main jets, bigger carb , ignition timing, exhaust extractors

most cars this old , the CAT is missing rodded out or dead.
and all cars with no cat stink. all ! and lots of CO. (deadly)
tune it out doors.

the carb must be tuned to burn all the fuel.
and webers are the hardest to tune. (But run better than all, once tuned) the Harley CV carb is vastly more easy to tune. FYI.
we use a wide band oxy sensor tool to tune carb now 100x more easy.
the tool was $1200 but not $140
what engine is there, G13? (most now, are upgraded)
the G13 has a mech, distributor. and the advancing weights must work like new. (not stuck"rust")
the dizzy must advance fully or carb tuning is a head to wall slam.
if the dizzy fails, it will not burn all the fuel. and will stink bad.

So using a timing light check the full advance.
the sammi FSM is free.
here it is.
http://www.fixkick.com/sammi-stuff/index.html


weber 101 tuning is beyond the scope of any post here.

1987
toy
what engine, ?
carb or EFI, most were carb then,. but.>>>>?????
not all.
if carb, then the carb is bad. kit it and clean it. then tune it.
if EFI, (is the CEL lamp going running?)
both is the Thermostat in engine, holding 180F or more? ?????
lots more when we know what engine, and carb/efi

probably the most hard question ever posted in faxya.

how to tune any carb.

google it and read for 1 full day..

endless story.

how id do it is different than you, or old school.

I have a wide band oxygen sensor i can put on any car.

and tune anything. (gas)

the jets need tuning.

here it the steps before

1: 100% clean every inch, (called "boiling out the carb") or kemdipped.

2: kitted, put in a carb kit, gaskets, and all the bits.

3: make sure choke works. turns off , on a hot engine, if not MPG WILL SUCK.

4: fuel pressure as spec. not 15psi,., better is 3.

5: float level to spec. (new carb)

6: tune it. (thats the long story.)



done many. and have cars in my barn that use carbs and motorcycles.

Sounds like the accelerator pump circuit in the carb is not squirting fuel in when you depress the accelerator. That is why you get the lag in acceleration before it decides to launch. When you open the carb you should get a steady stream of fuel from the accelerator pump. With the engine not running look down the carb throat and open the throttle blades and visually check to see that there is a stream of fuel when doing so. If not time to rebuild the carb, or just get another accelerator pump for
the carb.

can be a few problems but the most common is fuel filter clogging---the others are egr valve carboning up [remove and clean carbon with a strong carb cleaner ]--fuel pump check fuel pressure--pcv valve --cat converter clogging--air filter -throttle body/carb needs cleaning--or tune up these are a few

probably need to replace power valve in carb

remove air ducts, put some fuel drops in intake trhottle , and try to start engine , maybe have fuel pump is worn

check and clean carb, try a lil carb fluid in carb to fire, also check the usual things for a tune up: cap & rotor, wires , also if its sat for a year add some clean fuel, condensation in fuel tanks and lines will wreak havoc, and will clog even brand new fuel filters