1961 1010 Crawler gas engine hard to start

seanc · Post by **seanc** » Mon Jul 25, 2011 6:51 am

I am the new owner of a 61 jd 1010 crawler. The machine runs perfectly save the fact that it is a real bear to get started.

The prior owner, who had the machine for 30 years, swore by full choke, ether directly into carb followed by hand choking over the carb to get the engine running, which even with ether and hand choking, it cranks for a good 45-60 seconds before coming to life.

This does not seem correct to me and was looking for advice on what could be wrong.

The engine has 75 psi of oil pressure and 125 psi of compression on all four cylinders.

Thanks!

JD440ICD2006 · Post by **JD440ICD2006** » Mon Jul 25, 2011 7:57 am

Can be several factors. Unlike a diesel that needs heat from the highly compressed air and a correct spray of fuel at the proper time to start well, a gas needs compression (which you have), gas, and spark at the proper time.
Could be timing, even though it "runs good". Could be slow fuel flow, or an air leak somewhere between the carb and the intake manifold. Could be wrong spark plugs, maybe they are too "cold" for the application?
Also could be weak battery or wrong cables that are are eating up power when the starter is turning. Also could be a starter that needs rebuilding.
In other wordfs, if the starter is not up to snuff, it could be using most of the power to turn the engine and there is not enough left to spark enough to light off a cold engine.
I am sure there are others but this will get you "started". (no pun intended)

seanc · Post by **seanc** » Mon Jul 25, 2011 10:19 am

I'm guessing it has to be something on the spark/timing side of the equation then.

Plenty of compression and its getting ether direct into the carb covering the fuel side. If it was a fuel delivery problem I might expect it to pop and run for a second on ether then die but It just cranks and cranks and finally decide to start running.

I'll check the plugs, voltage, etc...

mnwoody · Post by **mnwoody** » Mon Jul 25, 2011 5:19 pm

I would also check point gap, condenser, and coil. All these could create a weak spark and be hard to start, but still run well. I am sure you could replace all these parts plus plugs , wires, rotor and cap for around hundred dollars.

KenP · Post by **KenP** » Mon Jul 25, 2011 6:59 pm

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1961 1010 Crawler gas engine hard to start

1961 1010 Crawler gas engine hard to start

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