Jinma 224 Slow cranking,

[quicksandfarmer]

Rich,
Did you check the hydraulics as mentioned by QuickSand?
Disconnect the output hose on the pump.
Does fluid surge out when you crank the starter?

For this to work you have to take the coupler off. Or put a mating coupler on. If it's just the coupler the fluid is blocked and the pump can't turn.

I would highly recommend checking this before tearing apart the electrical system and the fuel system. More generally, OP needs to check whether there is anything mechanically keeping the engine from turning freely. Some sort of mechanical obstruction would explain both the stalling out and the difficulty starting. Hydraulic system is most likely, I suppose it could be several other things.

Does the engine have compression release? Even a weak starter should turn it with compression release on. Can you turn the engine over by hand? A 27mm wrench on the crankshaft pulley should be able to turn it over pretty easily.

I would discourage trying to pull-start it without establishing that the engine is turning freely, you'd just break something if it was obstructed.

 

[richg209]

Quick,

**** I did forget to check the hydraulics. I will separate the loader hoses and put a spare male end in so the fluid can flow. When I had the starter out to check and test, i was able to move the flywheel with a flywheel tool. I'll let you know hopefully tonight. (Gotta do the daytime real job).

Thank You,

Rich

 

[richg209]

Guys,

Took off couple hours early. Disconnected hose at back of hydraulic pump. Fitted with spare female couple so fluid could flow. Cranked, albeit slowly and pump is pumping well. I am getting 13.02 volts at the start terminal and using starter housing bolt for ground. Is it possible if doesn't crank fast enough it won't cough or start?

Thank You Again.

 

[erj]

Rich,
How many volts are you getting to the small terminal on the solenoid from the wire (probably red) coming from the key switch when in start position with clutch depressed?
Do you have a compression release that you are using when starting?

 

[richg209]

ERJ,

Will check the voltage at that terminal later today. I replaced the ignition switch about 2 weeks ago with a cole hersee 924. The compression release is used but cranking doesn't change. Also it cranks slow if I use a piece of 8 guage wire jumped across the terminal to the small terminal. (Don't like doing that but needed to bypass the switch and neutral safety path).

 

[fidowanttobe]

Sounds like you checked everything, my guess your starter bushings are out and it's dragging. Cheaper in my area to have it repaired than to replace.

 

[richg209]

Soooo,

New starter and that solved the cranking issue. Was a bastard to get started. Finally it did though and to me it appeared as if it was "flooded" I let it run for a considerable amount of time.

Concerns, when it did start initially it was blowwing "particles"into the air, that cleared in a few minutes. Is it possibly bio-contaminated? Best to to clear? Is it a leaking injector, how to be sure?

Thanks,

 

[Dave M7040]

You likely in effect "flooded" the engine with cranking but no start. Injectors pumping in fuel which does not ignite.
I expect this exhaust particles will clear up with some running where the engine is working and getting hot not just idling.

Dave M7040

 

[Bob Rooks]

Soooo,

New starter and that solved the cranking issue. Was a bastard to get started. Finally it did though and to me it appeared as if it was "flooded" I let it run for a considerable amount of time.

Concerns, when it did start initially it was blowwing "particles"into the air, that cleared in a few minutes. Is it possibly bio-contaminated? Best to to clear? Is it a leaking injector, how to be sure?

Thanks,

Most likely carbon particles, not unusual. What color was the smoke? White whispy smoke is condensation from cold combustion or coolant introduced into the combustion process (usually a blown or leaking head gasket). Light grey smoke that lingers is unburned fuel. Blue smoke is oil burning. Black smoke is too much fuel for the amount of available air (hard acceleration), or not enough air for a particular amount of fuel (plugged air filter). Dribbling injectors can be difficult to detect without pop testing, but in extreme cases you can detect the difference in combustion knock.
And btw, you don't "flood" a compression ignition engine.

 

[Dave M7040]

Most likely carbon particles, not unusual. What color was the smoke? White whispy smoke is condensation from cold combustion or coolant introduced into the combustion process (usually a blown or leaking head gasket). Light grey smoke that lingers is unburned fuel. Blue smoke is oil burning. Black smoke is too much fuel for the amount of available air (hard acceleration), or not enough air for a particular amount of fuel (plugged air filter). Dribbling injectors can be difficult to detect without pop testing, but in extreme cases you can detect the difference in combustion knock.
And btw, you don't "flood" a compression ignition engine.

And what would you call an unburned fuel condition in this new engine for Mazda
Dave M7040