Question about Clymer 1994-1995 Polaris Trail Boss 300 2X4 Repair Manual M496 Service

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How to put injection line back in carburetor

Oil injection line came out of carburetor

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Turns over but wont start pumps fuel into lines but not engine will start if fuel is poured into moror but only long enough to burn fuel poured in


This sounds like fuel injection, is it? Or I think you would have said if it was a carburetor. But if fuel injection, it is the pump and the fuel filter's job to put fuel under pressure in the lines and up to the engine, or really to the injectors. If you have fuel pressure in the line, then you have fuel pressure to the injectors. (If not, check the fuel filter.) And then, it is the injector circuit's job to put the fuel into the cylinders.

Just first be sure the fuel pressure is correct. For throttle body injection, that resembles a carburetor somewhat-the injectors are in the throat, the required pressure is usually around 13-20 psi. But if you have multi-port injection, the pressure requirement is much higher, usually 40 psi or more, sometimes as much as 60 psi. If it is carbureted, though, it takes very low pressure, 5-7 psi, and you would need to check if the gas is actually getting inside the carb and filling the fuel bowl inside.

But back to the injector circuit: every injector has only two wires to it: a power wire and a ground wire. The power wire is constant voltage to the injector as long as the key is in run, or on, or in start. The injector is an electrical solenoid, and it gets the power on one side, and when the ground wire is grounded internally in the engine computer, the solenoid is energized, a fuel passage opens, and the injector sprays fuel out. This is called the injector pulse, it only happens for a split second. But you see why the injector must have fuel under correct pressure to shoot the right amount of gas into the engine. You can check the injector circuit, both power side and ground side, with just a simple test light. Post back if you want that, I can give you the procedure. Good luck, and probably good night.

May 28, 2015 | Cars & Trucks

1 Answer

How to clean carburetor


That's a good start. I take the spray carburetor cleaner and spray down the throat of the carb, and I add fuel line injection cleaner to the gas tank. I also would change the gas filter if there is one. I use fresh gas , if the gas has been sitting for a long while, and I put the Sta-bil in the gas tank every season.

Jun 16, 2014 | Eastern Steel 1000W Factory Gas Generator...

1 Answer

My John Deere riding mower is not idling right it back fires through the carburetor I change the oil and put fresh gas in it and new spark plug and still does the same thing


The problem may be a dirty carburetor. Before going thru the hassle of removing the carburetor, I suggest you get a spray can of carburetor cleaner and a bottle of fuel line / injector cleaner. Pour about 12 oz.. of the fuel line cleaner into the gas tank. Take the air filter off and spray the cleaner inside the throat of the carburetor. Let the cleaner do its job for a few seconds. Disconnect the spark plug wire from the spark plug and turn the engine over a few times. You can repeat this a few times. Start the mower and let it idle a few minutes. During normal use the fuel line cleaner will clean the carburetor. I also suggest you change the gas filter before you clean out the carburetor. Check the air cleaner, and repace if very dirty.

Jun 01, 2014 | Garden

1 Answer

I have a suzuki ozark 250 and the fuel from the fuel tank is leaking into the engine and the air filter box and does it need 2 fuel lines to run


Float in bottom of carburetor is stuck .remove bowl from bottom of carburetor clean float with it in place with carburetor cleaner put bowl back on test run .check make sure you change oil and filter and replace spark plugs.

May 17, 2014 | Cars & Trucks

1 Answer

I filled the gas tank in my chain saw with bar oil. Is there an easy way to remove the oil from the carburetor and get it started?


Hello. It's doubtful the bar oil has made it to the inside of the carburetor. Dump as much as possible out of the tank, disconnect the gas line from the carburetor and blow any oil in the line and filter back to the tank. Partially fill the tank with premix and briskly shake the saw to dilute the bar oil. Dump the bar oil pre mix solution from the tank and repeat. This will also clean the in tank filter and should be done at the beginning of the season.

Nov 03, 2013 | Husqvarna Garden

1 Answer

Does a 1988 carborated Nissan pathfinder have a fuel pump regulator?


Are you sure it is a carburetor and not throttle body injection? They do look similar.
If it is a carburetor, there would not be a regulator. The fuel pump will either be a mechanical pump mounted on the engine, or a low volume electric pump in the gas line from gas tank to the engine.
If it is throttle body injection (TBI), yes, there is a fuel pressure regulator, probably located near the throttle body. It will have gas lines connected to it (one line will be a return line back to the gas tank) and a vacuum line. The fuel pressure on TBI systems is not as high as multi point injection, usually around 20 psi. You would have to check the specific pressure requirement for your pathfinder.

Take off the air cleaner cover and look at top of unit. A carburetor should have a choke plate right at top of the carb throat. However some Nissans by '88 had a carburetor without a choke-it used an enricher jet controlled by the ecu for added fuel when starting.. On a TBI, looking down at the unit where the air goes in, you will see one or two injectors with a wiring harness connected to them-each injector will have two wires connected to it.
If still unsure, check engine designation on the under hood label. Carbureted engines will have a s letter designation, injected engines will have letter i. To explain: my '87 Sentra is carbureted, so engine designation is E16s, some same engines were injected, so their designation is E16i.

Sep 29, 2013 | Cars & Trucks

1 Answer

Oil is being pumped to my Carburetor on my 86 Buick Regal .. Don't know if it happen before or after my oil change .. Does anyone know wat this could be ? This is were it's coming from .. I put a...


Your picture won't come up. If you are getting oil in the air filter housing, check your pcv system (Positive Crankcase Ventilation). Your pcv valve may be plugged or not working.
And just so you know, it is not a carburetor. It is a throttle body assembly with throttle body injection. You have fuel injection with injectors mounted in the assembly-much more reliable than a carburetor.

Jul 28, 2013 | Cars & Trucks

2 Answers

Starts but won't stay running, i clean carburator and still have same problem, unit has been used very little, still look new, Thanks,


Have you checked your oil? You need pump oil half way up in reservoir. Open plug on top of pump and check oil. Pump takes SAE 20 or 30

Next, open oil plug below engine and check your oil level. It should come up 1/2 way on dip stick. Engine takes 10W30. Don't turn washer on its side or upside down to drain oil or oil will run into carburetor.

Is the water turned on? Are you holding gun trigger open while starting? Pump needs water flow. DO NOT tie gun trigger open with wire and then start engine. That gun will flip around and shoot a hole in your leg.

If the engine starts, then you have gas, spark and compression

If engine won't stay running, the exhaust port might be clogged, or the carburetor is not letting in enough gas, or gas is not flowing to carburetor.

Check the screen over exhaust port > is it dirty or clogged? Clean with WD-40 or break it out with a screwdriver.
Remove gas filter below gas tank >>> it has a hex bolt >> loosen bolt >> the gas should come flowing out >> put it back if gas comes out
Next remove rubber gas line feeding gas to carburetor >> gas should flow out this line too >> if flows then put it back.

What about your air filter? Take it off. See if engine fires and runs without air filter. Air filter may be clogged.

While air filter is out, you can see open port to carburetor. Spray some WD-40 into carburetor. Fire up the engine. It should spark real healthy on the WD-40. Keep spraying WD-40 into carburetor to see if you can keep engine going. Don't forget to keep gun trigger open so water is flowing and pressure is not building in pump.

If engine keeps going with WD-40 but dies without it, then your carburetor is very suspect. You might need a new one.

If engine will not keep going with WD-40, then the spark is very suspect.

Change spark plug. Try again. If it doesn't fire up after that, you need to take it to the shop for repair.

Oct 09, 2010 | Honda 2500 PSI Gas Pressure Washer

1 Answer

After starting and operating the chainsaw for a short time, it dies and I can't get it started again. Suggestions?


Engines require 3 things. Spark, compression and fuel. And chainsaw need 2-cycle oil mixed with the gas.

Assuming you have the right oil-gas mixture and a fresh batch of gas, and you didn't leave old gas in the saw all summer long since last November.

-Take off the dirty air filter and see if saw starts without filter. Do not run without putting in new filter.
-Check exhaust port for mud dobber home or screen clogged with carbon and dirt
-See if saw fires up after squirting WD-40 directly into carburetor
-Check gas line >>> pull gas line loose and see if gas flows out of tank to carburetor
-Take out spark plug > put finger over spark hole and pull cord >> do you feel suction that says you got compression?
-Put spark wire back on spark plug >>> hold spark plug so threads touch bare metal part of spark plug hole >>> pull starter cord and see if spark shows between plug and saw >>> suggest you not hold metal part of spark plug while pulling cord [you'll understand why]
-If spark plug shows spark, then your saw has spark ... so put in new plug and start fresh.

If your saw has compression, spark, and fuel it should start unless carburetor is gummed up because gas was left in tank.
Here is the final trick. Start the saw while spraying WD-40 directly into carburetor and see if you can keep it going with the WD-40. This might take a helper. If this does not work, then carburetor is bad or gas line is clogged at carburetor. Time to take it to the shop.

Oct 06, 2010 | McCulloch Garden

1 Answer

My 1984 toyota corolla ran out of gas now it wont idle


Quick explanation of your fuel system:

An automotive fuel system consists of everything between the fuel tank and the carburetor or fuel injection unit. This includes the tank itself, all the lines, one or more fuel filters, a fuel pump (mechanical, electric, or both), and the carburetor or fuel injection unit.
With the exception of the carburetor or fuel injection unit, the fuel system is quite simple in operation. Fuel is drawn or pumped from the tank through the fuel line by the fuel pump, which forces it through the fuel filter, and from there to the carburetor/injection unit where it is distributed to the cylinders.

So with that info...try first to clean your spark plugs.
Next, replace your fuel filter.
After that, depending on a carburetor/fuel injection, try an additive that cleans the injectors. For the carburetor, try a half of can of what is called "Seafoam". It comes in a metal can available everywhere, including Walmart. It is worth the $6-8 and also will "dry" out your fuel from water. Very good product.

After that, get back to us and let us know how your Toyota is running.

Oct 12, 2009 | 1984 Toyota Corolla

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