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Carburetor troubleshooting car is not idling

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Test clogged or broken fuel lines or filter.
2) faulty fuel pump , before to go to the carburetors
3) readjust the throttle , incorrectly adjusted
4) readjust the carburetor accelerator pump to mett the manufacturer specifications.
5) readjust the carburetor flot setting to m. specification
6) leaking power valve, gasket or accelerator pump, repair or replace
God bless you

Posted on Jul 18, 2013

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Correct fast idle


Check this link for fast idle adjustment.

Edelbrock Carburetors Troubleshooting Fast Idle Adjustment

Also check out the following link for details about the adjustment:

Pages 22 23 Choke Fast Idle Speed

Feb 12, 2015 | Cars & Trucks

1 Answer

Carburetor diagrams deni pd24jh


Did you adjust the idle mixture screws ? Is this a two or four barrel carburetor and what make carb. Carter , Holley, Quadrajet etc.. What make vehicle is it ? Normally the idle mixture screws should be opened 1 and a half turns to two turns . counterclockwise from fully seated . Then you can set the idle screw to what the idle should be 600 rpm to 750 in drive . Most cars have a decal somewhere under the hood telling all these things !

Aug 14, 2014 | Cars & Trucks

1 Answer

What is the problem if carburetor idles high even when valves (mixture, idle) are at low adjustment?


are you allowing the car to warm up first before checking your adjustment screws? have you also checked the timing of your vehicle?

Jul 28, 2014 | 1990 Toyota Corolla

1 Answer

Starts good, takes throttle, no idle.


Hello,
You may have idle jet is get problem or vacuum leaks. For temporary remedy, use a carburetor cleaner to clean your carburetor and found the vacuum leaks. For complete cleaning, dissemble your carburetor and have the jets, linkages cleaned. And check hoses linked to your carburetor for leakages.

Dec 10, 2010 | 1987 Toyota Corolla 2 Door

1 Answer

MY IS IDOLING VERY FAST NEED TO USE BOTH FEET TO KEEP CAR FROM MOVING FORWARD FAST


IF YOU HAVE CARBURETOR. IDLE SPEED TOO HIGH NEED ADJUSTING. CHECK ACCELERATOR LINKAGE OR CABLE COULD BE IN A BIND CAUSING HIGH IDLE SPEED.MAKE SURE THE ACCELERATOR PEDAL FLOOR MAT NOT IN THE WAY.CHECK CARBURETOR MOUNTING BOLTS.RETIGHTEN TO MAKE YOU DONT HAVE A VACUUM LEAK BETWEEN CARBURETOR GASKET AND INTAKE MANIFOLD THAT WILL CAUSE HIGH IDLE SPEED.IF YOU HAVE FUEL INJECTION ENGINE LET A GARAGE SET THE TIMING AND IDLE.

Nov 22, 2010 | 1988 Toyota Corolla 4 Door

1 Answer

My 1992 nissan stanza has low idle while idling. how do i adjust the idle


If it has fuel injection it cannot be adjusted.
If it has carburetor then one can turn a screw on the carburetor, but I think that your 1992 Nissan has fuel injection (electronically controlled idle).

Jul 04, 2010 | 1992 Nissan Stanza

1 Answer

Cutting out on idle at operating temparature


Hello, I had the same exact problem. The problem is that there are several things that can affect a car to cut out at idle. It could be anything from a bad spark plug wire (ignition problem) to problem with the fuel system or an emissions related problem. My guess is that it is probably an emissions related problem. The first thing to do after eliminating the easy stuff like a bad wire is to check for vacuum leaks around the carburetor or manifold. The reason it happens after it warms up is that some emissions related switches and solenoids open up after receiving temperature input signals from the engine coolant temp switch, telling the computer that the engine is warmed up. Then the computer opens the switch and then the problem develops. I had the same problem and the problem was the EGR valve. I removed the valve and blocked it off in order to troubleshoot it and that fixed the problem, so I knew I found the culprit. The EGR valve is turned off when the engine is cold, so when the engine warms up the EGR kicks in and if it opens too far on idle, the car will idle rough when at operating temperature. So check this as a possible. You didn't mention if you have carburetor or fuel injection, but either way, the EGR is the same.

Sep 01, 2009 | 1993 Ford Festiva

1 Answer

Engine do not want to idle


your model is with sparc plugs or with carburetor?
if it is with carburetor then check idling mixture in your carburetor you have to calibrate it.
second no matter you model have look for air sensor problem.

Apr 11, 2009 | 1991 Toyota Cressida

1 Answer

Possible vacuum leak


In order to troubleshoot this, you must start with a clean engine wipe down.


The major offender parts are


air intake gasket on the manifold

air tube after the mass air flow sensor

rubber seal under idle air control IAC motor

===

Warm up the engine for 15-20 minutes (LEAVE THE engine at idle) then spray a little Barmen carburetor clear on the potential air leak location (ONE AT A TIME) and listen for a surge in rpm.

If the engine speed go higher that's mean the carburetor cleaner (ADDITIONAL FUEL) got into your engine and that's the gasket you need to change.

There may be multiple leaky spots so take your time and check all rubber gaskets,sensor and hose that are lead into the intake manifold.

When you finish fill up with one tank of Chervon to clean out the injectors.


Try to get a toque wrench and tighten ever bolt on the valve cover back to specification. If you can not get hold of one then just give each bolt a gentle 1/6 turn.



Please post more information after your inspection.

Mar 09, 2009 | 1993 Hyundai Scoupe

2 Answers

1988 F-250 460 engine stalls when dribing down the road


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

Jun 22, 2008 | 1988 Ford F 250

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