Won’t start

[55loboy]

Since, my tractor sat for almost ten years, it never really run that well, but it ran. A few months ago I wouldn’t start at all. Here’s what I’ve done without success

-Tried two different carbs. Fuel was/ is getting to both
-Norwalk, points and condenser.
-Cleaned and regappedthe plugs
-Checked to see if spark is getting to each plug
-Checked if power is getting to the coil
-Removed valve cover. All the valves appear to be moving freely


I’m about ready to list it on Marketplace. lol

[CharlieK]

how much?

[Bill V in Md]

Engine compression test?

[tst]

engine needs 3 things to run
good compression
good blue spark for ignition
fuel
have all these it will run

[JohnMihevic]

Get a spray can of starting fluid. Remove the air filter tube at the carburetor inlet. While cranking the engine over, squirt some starting fluid into the carburetor. Starting fluid ignites better than gasoline.

[ScottyD'sdad]

Get a spray can of starting fluid. Remove the air filter tube at the carburetor inlet. While cranking the engine over, squirt some starting fluid into the carburetor. Starting fluid ignites better than gasoline.

If it runs on starting fluid, then stalls when you stop spraying it, it has a carb issue.
Ed

[55loboy]

Tried starting fluid with any luck. I’m probably going to breakdown and do a compression check. Weird that it suddenly wouldn’t pop. I was hoping that someone thought of something I missed.

[tractorpoor]

Coil maybe??

[staninlowerAL]

In your first post above did you have any spark at the coil/plugs?

[Glen]

Hi,
They have said on here that some new ignition points come with a clear coating on them, power won't go through the coating. Remove the coating if it is there using a flat file. Wipe all filings off with a clean rag.
Here is info for doing a compression test, if you need it.
Open the throttle fully to do the compression test, so the engine can get air.
Have all 4 spark plugs out of the engine at the same time.
Charge the battery fully before the test, and use the starter.
Charge a new battery also, they are not always fully charged, a low output charger is better, 6 amps or so, that automatically goes down as the battery charges. It may take several hours to charge.

The ignition points can corrode when sitting for the Winter, that can make the engine run bad, or not run any. They may need filing and cleaning. Remove all filings with a clean rag.
Check the point gap, it should be .020" for a Cub or LoBoy Battery Ignition unit.
The ignition timing is important to how the engine runs. If it is wrong, the engine can have less power than it should, or run bad.
I would check the ignition timing. A timing light can be used to check it when the engine is running.
I sent you a PM.

[55loboy]

I have spark at the plugs.

[staninlowerAL]

Do a compression test to verify that you have enough compression on all cylinders for the engine to start. 80 to 85 psi is getting to the low end. If the plug wires are correctly installed and the timing is correct you might try pull starting the engine. Don't attach the chain/rope to the front end, some parts of the front are not very sturdy and could be broken. JMHO Stan

[55loboy]

checked the compression and have runable readings 115,110,100,95. I have a new coil. Im only getting 5.3 volts to the coil and 6.7volts at the battery. Is that a significant enough of a drop to under power the coil? Wont pop with starting fluid. It appears that I have spark at the cylinder. Im running out of ideas. Points and condenser were replaced.

[tst]

did you gap the points to .020 ? do you have a good blue spark ? not just orange ?

[Eugene]

I have a new coil. I'm only getting 5.3 volts to the coil and 6.7volts at the battery. Is that a significant enough of a drop to under power the coil?

5.3 volts is sufficient to fire/spark from the coil. Assuming the 5.3 volts is when cranking the engine. If you get below 4 volts when cranking the engine - weak spark - may not start the engine.

You said that you are getting spark at each plug. Your timing is probably messed up.

Did you remove the distributor when you installed the condenser and points? If you did, you need to time the distributor to the engine, then time the points - multiple steps involved.

Have you static timed the engine?