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Engine will not crank

Posted By RayCarter18 10 Years Ago
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Steve
Posted 10 Years Ago
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Good.  Verify a strong battery....
RayCarter18
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Ok I took spark plugs out and tried to turn by hand it was very hard. Which I don't understand cause I had it runny fairly good a couple weeks ago before my radiator got a leak in it. I did see fuel on the spark plugs which I did suspect cause when you choked it the compression rose. (It would crank fine than it had to work really hard to overcome it) I was able to crank it over by hand pretty easy though. What would cause it to get so tight. Anyways after rotating it by hand 3-4 revaluations I used the starter and it cranked for a bit before the battery got weak. I swear I just had it charged up and it lost its charge. Walmart batteries are so cheap it was brand new too. I had a bit of fuel spit out but not a huge amount. As I have stated before it is a rebuilt carb with new needle and seat.
charliemccraney
Posted 10 Years Ago
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If it is difficult to turn by hand with the plugs out, then something is binding.
Since the starter is questionable, even though it is new, remove it to see if the starter is stuck and to see if the engine turns easily without the starter in place.
And since you've been doing a lot of cranking at low rpm, it might be wise to pull the distributor and turn the oil pump manually to ensure that the bearings are lubed.



Lawrenceville, GA
chiggerfarmer
Posted 10 Years Ago
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The starter drive depends on centrifugal force from the engine starting to disengage itself from the flywheel. If the starter has been engaged and the engine did not start, sometimes turning the engine by hand will also turn the starter. This may account for the extra effort to turn it by hand. I think you still have a high resistance somewhere, or a starter problem. Check all ground connections. If you mentioned it was 6 or 12 volt, I missed it. A 4ga battery cable is nowhere nearly large enough for 6 volts. Also, starter spin tests that do not load the starter do not prove much.



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Steve
Posted 10 Years Ago
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If the starter is still engaged as may be the case as suggested, you will hear it as your turn the crank.
miker
Posted 10 Years Ago
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If the starter was smoking, it's going to have to come out anyway. That will clear the solenoid. I like The idea of preluding the motor, again. Then see how hard it is to turn. Even with the plugs out, there's a lot of friction from the valve train. If it turns easy, good. If not, you can loosen the valves, get the pushrods out, and have only the bearing and ring friction. That might help isolate the problem.

You also mention the engine not cranking, and "clicking". I'm guessing you mean the solenoid is clicking. That's a low voltage indication. That puts us back to the battery-solenoid wire, or the grounds. Or a battery that won't pass a load test.

miker
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Tucson, AZ
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No prescription here, but a "similar" experience... restoring a 62 Lincoln with a big ole 430 in it... reputably rebuilt... would crank abit and then stuff would start melting, smoking, groaning... never got the motor started.  Changed out stock ground/hot cables to 0 ga... that should do it.  Nope.  Turns out, I had not properly cleaned the paint/primer from the ground strap mounting areas, and the high amps were just raising hell. Remedied, but the kicker was that I had been cranking a new motor at low rpm's for so long diagnosing the problem, and of course dumping so much fuel into the intake, I had washed the cylinders, diluted the oil, and worn the rings. My motor builder was, let's say, very disappointed in me. Live and learn... now back to your normally scheduled programming.

Cheers... Brian


Cylinder Index = 84

Current Experiment = `57 Tbird, Grand Rapids, Michigan

RayCarter18
Posted 10 Years Ago
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I took the starter back in and it is weak so I will get it tomorrow and try it out.
Rusty_S85
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You can try getting a 6v starter.  That's what I was given when I took my 12v starter in to be rebuilt.  Was told its too much to rebuild it cost wise but he custom orders new starters with 6v field coils (I figure he just ment he ordered 6v starters) but he said a 6v starter will turn these engines over faster than a 12v starter would.  I have to agree as I cant let up off the key fast enough before the engine is running.  Only thing I don't like is the "Zing" as the bendix is thrown out once the engine starts running.

1956 Ford Fairlane Town Sedan - 292 Y8 - Ford-O-Matic - 155,000 mi

RayCarter18
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One other question the ground strap from the driver side head to the firewall would that be tied in to the starting circuit as a ground cause the insulation is all worn off and it's fairly corroded. So I might replace that tomorrow as well if it's a ground for the starter.


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