Looking for a diagram for my pierburg 4a carburetor. Even after tuning the carb perfectly, it stalls sometimes and has porblems getting fuel while on the road a higher speeds. This morning , I almost torched off my exhaust manifold, becaus it was to lean. Thanks, Holger

ENGINE STALLs FOR AS MUCH AS 50 REASONS
WHAT IS YOUR QUESTION, FOR US TO GUESS THOSE FOR YOU. OR DO THE 20 ODD TESTS TO FIND THE CAUSE.
even one loose wire can stall an engine or far worse.
we have no carb engines in USA 2007 they ended back in 1988 in the USA for EPA.gov mandates. then.
what are robots/ ? (traffic lights)?
the word is engine stalls, ends running.
i call bad CARB.
or bad fuel causing bad carb
or never did spark tune up and filters, in 16 years?
1: engine bad and bevvy of tests using tools you dont have.
2: spark bad, aka, a tune up. never done in time?
3: air filter packed or fuel filters packed, or carb packed in junk or float levels failing. or jets packed, or other parts inside carb filthy or bad./ or just bad fuel or even wrong fuel put in tank (diesel)

when the engine stalled, did other things die too, like head lamps
radio , or heater blower dies?
as car was stalling , does a fast acting right foot save the stall?

tough question
any online repair manual for it ?

Rob; 95% sure it is a carburetor issue, dirt clogging a port or jet,float sticking. I will post a few sights below to show how to clean carb.

How to Fix Snow Blower Carburetor

HOW TO Clean Rebuild Tecumseh Snowblower Carburetor PART 2 OF 4

how to rebuild snowblower carburetor

Tuning carburetors and setting timing - Allpar

www.allpar.com/fix/carb-tuning.html
Tuning carburetors on Chrysler, Dodge, and Plymouth vehicles. ... Warm the car upby driving it around for a bit, then connect the vacuum gauge to intake ...

Dodge 440 engine problem???? - RV-Coach Online

www.rv-coach.com/current_category.2178/.../forum_thread_full.html?...
Aug 4, 2005 - 100+ posts - ‎100+ authors My son has a 77 dodge powerwagon with 440. went to replace starter, ... I have changed out the carb, fuel pump,filtters, and coil. .... We have put in a new ignition module, spark advance (vacuum), coil, ... I have a dodge 1 ton Cary Van. ... Where can I find tuneup specs for the '80 440 engine, like plug gap, ...

Dodge carburetor fix: Part 1 - YouTube

? 4:24
www.youtube.com/watch?v=RRcxiDKjzdY
Oct 13, 2009 - Uploaded by 4x4maniac89
Mean Green's carburetor was all gummed up so I took it apart. ... Sometimes it just takes some fine tuning ..

no jeep stated,
which engine, and is the carb setup still stock?
and never started again, or started after parked 5 hours and runs perfect other wise. (my other shoe dropped) hark ?
engine not totally dead,? what?
that is called stalling
what is your question you never formed one.
why, , it stalled.?
why did it stall , then engine is misfiring or the ISC system is dead.
how to diagnose it? (i can go 10 pages, must I? can do. ask)
who can fix this: any ASE shop in USA can.
would some one guess? sure, never tuned up this decade wins all bets. most the time...
guess 2 (most guessing is useless) the EGR stuck open.


my guess it just stalls at stop lights. but runs perfectly????
other wise?
test1 ...
can you prevent the stall with fast right foot actions
yes/ no
this answer is key to solving the riddle.
and how hard was that, if yes. key 2 , very imporant
1: easy
2: tad hard but can.
3: had to wot the sucker to keep if from stalling, WOT = wide open throttle.

there are many tests, to solve this, got tools? meters?
we cant guess any of the above. eva.

it can be bad fuel in take, or carb fueling wrong.
it can be carb messed up
it can be bad spark
or even a bad engine, and i never fail to test engines first for compression , for sure a 1980 as i dont like spending cash tuning a dead engine. (parts and labor worth more that car.... economics)

carbs are tricky,
is the chock stuck on all the time?
is the float lever holding and at spec, if not fix that now.
are the jets clean, and all nozzels and emmusion tubes in carb clean.?
got vacuum leaks?
these carbs have dash pot devices that prevent stalls when you cut the throttle in DRIVE (is it a/t or m/t box) vacuum operated it is.
is M/t box does it stall if you push in clutch or pop it to neutral?

It sounds like carburetor problems. Have you tried a new gas filter?
Check if the choke is operating properly-it may be open too far for a cold engine. The fuel level in the carburetor bowl may be set too low. You might also want to check volume flow from the mechanical fuel pump: disconnect gas line to carb and catch the fuel in a container as you crank the engine-watch fuel flow and volume-it should give a pint or two after half a minute of cranking, maybe less cranking time. Also check the needle valve at the inlet for carb-sometimes a tiny bit of trash or debris will clog up the needle valve. If all else fails, try a rebuild kit for the carb-those simple old carbs should be easy to rebuild.
How long since last tune-up?

Something internal in the carburetor is wrong, maybe the accelerator pump seal or gasket is bad. Think you will have to put a rebuild kit in the carb. There's no outside adjustment for it being way too rich.

Hi,Kathmandu, Anything is possible when we want.To make your Jetta conventional with carburetor you need some parts extra such as inlet manifold and a carburetor-make sure is PIERBURG-2.Ignore fuel pump by removing the fuse,and then repair all fuel pipes from and to fuel tank.Don.t touch the electronics

You can adjust the carburetor with a straight blade screwdriver.Remove the air cleaner and have someone push the gas pedal,you'll see a lever connected to the carb moving back and forth,this is the accelerator linkage.While looking straight at the linkage you'll see a screw between the linkage and the carb.Using the straight blade screw driver turn clockwise a quarter turn.Replace the air cleaner and start the engine.The RPMs should be higher, now hold the brake pedal and put it in gear.Stays running,your good to go,otherwise give her another quarter turn.Now this is a "get-by"solution,you need to give some attention to your engine by giving it a tune up!That means changing:distributor cap&rotor,spark plugs&wires,carburetor rebuild,oil change and lube.Oh yeah,tighten down the four 1/2" bolts holding down the carburetor too!You could have a vacuum leak under the carb or even a vacuum line disconnected.This will also cause the low idle speed!Good luck!

On older, carbureted engines, cold stalling (and hard starting) is most often due to an automatic choke that is sticking, misadjusted or broken. Cleaning the choke mechanism with aerosol carburetor cleaner may free up the choke allowing it to work properly again. If the choke housing as an electrical heating element, the element may not be receiving voltage when the key is on, or the element may have burned out (check resistance with an ohmmeter).

Other causes of stalling with a carburetor include an idle speed adjustment screw that is set too low (turn screw to increase idle speed rpm). The engine may stall if the idle fuel mixture screw(s) are not adjusted correctly or the idle mixture port(s) are dirty or clogged with fuel varnish deposits (clean the carburetor and readjust the idle mixture screws for smoothest idle). Stalling can also occur is there are vacuum leaks in the carburetor, under the carburetor (bad base gasket), or any vacuum hose connections to the carburetor or intake manifold