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Anyone know anything about getting a four-stroke engine to start?

DainBramaged

DainBramaged

Lifer
Here's the deal, we have a go-kart with a Techumsah 6.0 HP four-stroke (I believe) engine that won't start. One of the kids over-filled the oil and that was when the problems began. Since then, I have drained the oil, filled it back up, checked the spark-plug for spark (spark plug is new, btw), and such.

Anyone have *any* ideas?

TIA,

Dain
 
check for spark, if it's there, try a little bit of starting fluid. As long as the oil wasn't so overfilled that it damaged the rings it should run.

Spark, Fuel, Compression, with the three of them it should run
 
Originally posted by: VWhed
check for spark, if it's there, try a little bit of starting fluid. As long as the oil wasn't so overfilled that it damaged the rings it should run.

Spark, Fuel, Compression, with the three of them it should run
Click to expand...

What rings would those be and how would they get damaged? Also, how would I check for compression?
 
well, you could use a compression gauge, but it would probably be overkill. Does it feel about the same when you pull the starter cord as it did when it ran? Compression is the resistance you feel while pulling the starter, if it feels about the same as it always has it should be fine. While not very likely, overfilling a motor with oil can damage the piston rings, I've never personally seen it however. Did you pull the plug and check for spark?
 
Originally posted by: VWhed
well, you could use a compression gauge, but it would probably be overkill. Does it feel about the same when you pull the starter cord as it did when it ran? Compression is the resistance you feel while pulling the starter, if it feels about the same as it always has it should be fine. While not very likely, overfilling a motor with oil can damage the piston rings, I've never personally seen it however. Did you pull the plug and check for spark?
Click to expand...

Yes, we have spark. The only thing that I can think of is fuel. I know that I have gas going to the floater in the carburator. I just don't know if it's getting into the engine.

Thanks again for you help.
 
Originally posted by: DainBramaged
Originally posted by: VWhed
well, you could use a compression gauge, but it would probably be overkill. Does it feel about the same when you pull the starter cord as it did when it ran? Compression is the resistance you feel while pulling the starter, if it feels about the same as it always has it should be fine. While not very likely, overfilling a motor with oil can damage the piston rings, I've never personally seen it however. Did you pull the plug and check for spark?
Click to expand...

Yes, we have spark. The only thing that I can think of is fuel. I know that I have gas going to the floater in the carburator. I just don't know if it's getting into the engine.

Thanks again for you help.
Click to expand...

Take the air filter off and try squirting something flammable down there, like WD-40, carb cleaner, starting fluid, etc. You can use gas, just be careful. A couple of tablespoonsful will do it.

Bob
 
Originally posted by: cardiac
Originally posted by: DainBramaged
Originally posted by: VWhed
well, you could use a compression gauge, but it would probably be overkill. Does it feel about the same when you pull the starter cord as it did when it ran? Compression is the resistance you feel while pulling the starter, if it feels about the same as it always has it should be fine. While not very likely, overfilling a motor with oil can damage the piston rings, I've never personally seen it however. Did you pull the plug and check for spark?
Click to expand...

Yes, we have spark. The only thing that I can think of is fuel. I know that I have gas going to the floater in the carburator. I just don't know if it's getting into the engine.

Thanks again for you help.
Click to expand...

Take the air filter off and try squirting something flammable down there, like WD-40, carb cleaner, starting fluid, etc. You can use gas, just be careful. A couple of tablespoonsful will do it.

Bob
Click to expand...

yeah, try that. it should at least try to start.
 
Originally posted by: DainBramaged
Thank you for your assistance, gentlemen.
Click to expand...

Sorry to resurrect this, but did you ever get it started? And if so, what was wrong? Just curious.....

Bob
 
While I'm no expert at all I'll toss out ideas...

1) fire
2) fuel AND air
3) compression

The motor will start. Second the idea of spraying carb cleaner into the throttle body and making sure all your linkage is working there. Could be as simple as you fouled the spark plug with the excess of oil that somehow made it's way into the cylinder.
 
This thread scares me. Bring the thing to my house and I will fix it for you.
 
Pour about a half teaspoon of gas into the spark plug hole, then put the plug back in, and it should start. If it quits, then you have a fuel supply problem, like plugged line, plugged filter, bad carb, etc.
 
how old is the gas? Sounds like some type of fuel delivery issue. Does it sputter at all?
 
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