The propane method to set the idle on your vehicle is simply supplied to the carburetor throttle opening. This is achieved with a portable propane torch that is purchased from any hardware store. The propane will actually cause the engine to run at a slightly lower RPM when tuning. A slow draw is all that is needed to accomplish this procedure.
Check for air getting past the carburetor. Common leak paths include the: gaskets, carburetor insulator spacers, intake manifold gaskets, and any of the engine's vacuum fittings, hoses and accessories. Back the carb idle screw off using a flat tip screwdriver to raise or lower your idle speed.
Welcome to FIxYa.com 2.2 or 1.6 L engine This is for 2.2 l
1. Remove air cleaner crossover
assembly. 2. Remove canister purge and air
pump diverter valve
vacuum hose from carburetor. 3. Locate and center punch l$ inch
from end of mixture screw housing, indexing at approximately 10 o'clock position. 4. Using 316 inch drill bit, drill
through outer section of mixture screw housing at center punch mark. 5. If concealment plug does not
pop out, pry out using suitable tool. 6. Retain concealment plug for reinstallation. Thank you for using FixYa.com Regards, Lee Davidian
in side plug is the idle screw. not if you are trying to adjust the choke idle you need an Allen wrench and stick in ( see figure)
Figure 
ok the use of propane is to richen up the air fuel ratio i will send the info once i type and attach. thank you for your time, Lee
Propane method of making carburetor adjustments.It's "all about" on-the-nose idle mixture adjustments. The catalytic converter is so efficient that the emission level of carbon monoxide is too low to be measured precisely by infrared exhaust analyzers. This makes it difficult to tune carburetor tors exactly. Complicating the problem1cm has been the advent of difficultto-remove, idle-mixture-screw limit caps. It was once possible to takeoff caps and increase the richness of the fuel air mixture to get a CO adjustment.The propane enrichment procedure makes it possible (and simple)to adjust the idle mixture. Propane Gas added to the fuel mixture produces an effect similar your enriching the mixture by turning idle mixture screws. As the amount of propane metered into the engine is gradually increased, the fuel mixture becomes richer and engine rpm rises.Automobile manufacturers have issued specifications that give the maximum rpm level to be attained with the propane enrichment emissions decal that's glued under the hood of the car. 1f engine speed increases to the specified rpm when propane is injected, the idle mixture is okay. If the highest rpm level reached by the engine is below spec, the idle mixture is too rich and an adjustment is needed. If the highest rpm level is above spec, the mixture is too lean. Adjustment orrepair of a vacuum leak is necessary.Ford cars have used the propane enrichment method starting with the 1975 models and Chrysler with the 1977 model.
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From an old man whos adjusted more carbs than enough ,firstly check the vacumn pipes for a air leak before you go any further ,then is the timing correct and the points ok at the correct gap ??,then and only then adjust the air/fuel mixture for a nice optimum idle which is below the 2.0% CO2 and this is achieved by means of a screw in the base of the carb on a line with teh butterfly ,now this is where i come unstuck because i have never seen dodge omni so i could not tell you for love nor money where the screw is on the vehicle ,The dodge name has only just started to be sold here in spain and in reality its dawoo with a dodge emblem ,Hope this will help anyway
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Could I get a dodge mechanic in the US.How to adjust the idle speed on a 1984 dodge omni with the 1.6 litre engine.The manual says you use propane but it does not tell how.
i.6 engine
Engine is 1.6 liter.
It is a 1.6
It is a 1.6 engine. I have yet to get the propane technique for setting idle
where is the idle screw located on the carb of the 1.6 engine?
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