Export thread

I have a D100 John Deere riding mower. When I try to start it will crank but will not start. Any help anyone can give me will be greatly appreciated.

Two most common issues are fuel and fire. You gotta see if it is getting both of those.

lakeviewpe said:

Two most common issues are fuel and fire. You gotta see if it is getting both of those.

Click to expand...

Yep, those are the two favorite suspects, and my personal nemesis is fuel. Is this a recent problem, or has the little darling been sitting for a while? If you take the air cleaner off and squirt some gasoline into the carb and it fires, it's probably fuel delivery or quality. If you don't get any hint of starting, it's probably a spark issue. Take a peek at your plug, and be sure you're trying all this with nice, fresh fuel.

I have a similar problem with my d100. Did you find a solution?

Gasoline should never be left in the fuel bowl . A turn off switch must be put in line - turn the fuel off and let the tractor idle until the carb is empty .
Gasoline can attract enough water vapor in a week to damage the internal parts of the carb .

along with those two, there is a thrid. i have a jd l116 that was given to me. i rebuilt the carb, and check the ignition system. it still didnt start. i checked the wiring and found 3 shorts/open spots in the wiring.

What is it with the John Deere D100's . Isn't it a new model? They aren't made in China are they?

reynoldston said:

What is it with the John Deere D100's . Isn't it a new model?

Click to expand...

I don't think it's necessarily anything to do with the particular model.... it's likely because of the price and availability a Lot of them are out there... and so there will be more of them having problems...
The problems will most likely fall within the 2 main groups with engines... : Fuel related Or Ignition related problems...
A lot of these problems could be easily solved with a simple eliminating one or the other... Spraying a flamable liquid into the carb, see if it starts... if so solve the fuel delivery problem...
If there is no indication of a start... check for an ignition problem...

Once the problem is resolved... try to eliminate a reoccurrance if possible.... :smile:KennyV

First of all you've got to check if you have spark - To do that, pull the spark plug lead out, take the plug out, and reconnect them both, then, making sure the spark plug is far away from any flammable material, crank the engine over.

If it sparks, the ignition system is good, if it doesn't, you probably have a bad coil.

If it does spark, try putting some of that "Quick Start" directly into the carburettor as Kenny said, and if it starts (with the spark plug back in the engine of course) then stalls, you have a problem with the fuel delivery.

You'll have to give us a wee bit more information before we can help you any further.

Good luck. :thumbsup:

One other problem i just remembered is thet they have a vacuum assisted fuel pump. check your vacuum hose running to the carb to the pump. it will have a tee in the line. if the hose is good, then check the fuel pump for cracks in the body of it. the only fix then is to replace it. ishould i tried fixing it with most every possible sealants and glue

jmurray01 said:

First of all you've got to check if you have spark - To do that, pull the spark plug lead out, take the plug out, and reconnect them both, then, making sure the spark plug is far away from any flammable material, crank the engine over.

If it sparks, the ignition system is good, if it doesn't, you probably have a bad coil.

If it does spark, try putting some of that "Quick Start" directly into the carburettor as Kenny said, and if it starts (with the spark plug back in the engine of course) then stalls, you have a problem with the fuel delivery.

You'll have to give us a wee bit more information before we can help you any further.

Good luck. :thumbsup:

Click to expand...

I just don't understand where you have learned to test for spark, but it's not right. To just take the plug out and test it not under compression will not tell you if the plug is any good or not. Back in the day when you had spark plug cleaner machines you always tested the plug under compression after cleaning it. I know they don't clean plugs anymore. (Buy your self a spark tester from any auto parts store, this is the reason they make and sell them.)