Difficult Starting Issue


  #1  
Old 09-12-05, 12:47 PM
joinks28
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Difficult Starting Issue

1982 Dodge 4wd, 318 engine. Try to start the truck, but it spins instead of starting. Replaced spark plugs, spark plug and coil wires, distributor cap, rotory button, pickup igniter in the distributor cap, ignition modulator and resistor and the coil. Also, the carburetor was rebuilt.
 
  #2  
Old 09-12-05, 02:16 PM
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Check for spark at the plugs
Check for fuel in the carb when turning it over
 
  #3  
Old 09-12-05, 02:22 PM
joinks28
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we already did both and poured gas into the carburator at one point to be sure...
 
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Old 09-12-05, 02:24 PM
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So...you have both?
 
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Old 09-12-05, 04:02 PM
joinks28
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yep.. both of them...
 
  #6  
Old 09-13-05, 04:48 AM
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does the vehicle ever start?
if you have fuel and fire suggest checking compression on several cylinders if low do a wet compression test after squirting oil in the cylinders to see if compression comes up should be around 125 psi.
 
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Old 09-13-05, 11:22 AM
joinks28
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any kind of oil?
 
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Old 09-13-05, 12:06 PM
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Maybe the choke isn't working...

You can have tons of fire and gallons of gasoline and too much air. Try choking the carb.
 
  #9  
Old 09-13-05, 01:27 PM
joinks28
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no, doesn't start ever... already tried choaking the cauberator...
 
  #10  
Old 09-13-05, 01:56 PM
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How did you choke it? Did you actually see the choke closing off the intake?

If you are getting fire to the plugs and gas to the cylinders, then you either have no compression or the timing is so bad that it won't fire at all.
 
  #11  
Old 09-13-05, 04:58 PM
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Maybe by "spins" he means that the starter is spinning and not engaging the flywheel. Just making sure the engine is actually cranking over. You will also want to make sure the battery is FULLY charged so you are getting maximum cranking speed and electrical supply to the ignition system. Hook up another battery and see if it cranks faster....post back if still having the same issues.

If you have sufficient spark, and fuel.....you probably have a timing chain/compression problem.
 
  #12  
Old 09-19-05, 02:08 PM
joinks28
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timing was off, so we replaced that... but, it still will not turn over...
 
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Old 09-19-05, 05:52 PM
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Originally Posted by joinks28
timing was off, so we replaced that... but, it still will not turn over...
joinks, I'm sorry, how did you know the timing was off if it won't turn over?
And what did you replace because the timing was off?

I'm assuming you mean it turns over but won't run?
You are sure your are getting spark, fuel, and air,
Now you are sure the timing is correct?

Are all the fan belts and fans and alternater pullies and that stuff on the front of the engine turning when you try and start it?
 
  #14  
Old 09-19-05, 06:36 PM
joinks28
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knew the timing was off by taking all the stuff off and checking it... replaced the chain and gears... i'm sure about all that stuff... it almost started up once...
 
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Old 09-19-05, 06:45 PM
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We're still not sure what you mean by "spins". Does the engine itself turn while you're trying to start the engine?... i.e., do the belts turn while trying to start the engine?
 
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Old 09-19-05, 10:02 PM
joinks28
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belts turn, yes...
 
  #17  
Old 09-20-05, 05:55 AM
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Next up:
"Dry" Compression test
Then the "wet" comp. test, a little motor oil will work
 
  #18  
Old 09-21-05, 08:37 PM
jameskane
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Spark, Fuel, Air

Originally Posted by joinks28
1982 Dodge 4wd, 318 engine. Try to start the truck, but it spins instead of starting. Replaced spark plugs, spark plug and coil wires, distributor cap, rotory button, pickup igniter in the distributor cap, ignition modulator and resistor and the coil. Also, the carburetor was rebuilt.

Okay, not to sound stupid, but start at square 1.
Did the truck run before you replaced these components?
You replaced all of those ignition components, and you may have spark, but is the firing order correct?
Was the carb rebuilt professionally or with a home kit?
Do you know if the fuel pump is working? I believe if memory serves this was a mechanical (non electric) pump.

If the truck ran before you replaced these items, I might put the old parts back on and work one part at a time from there.

Good luck!
 
 

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