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Unread 07-10-2011, 10:57 AM   #1
ZooCrazie
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1978 CJ5 
 
Join Date: Nov 2010
Location: Rutledge, TN
Posts: 3
Help

I have a 1978 CJ 5 it has the Iron Duke 4 cylinder in it. I was driving down the road the other day in 4th gear going up hill and felt a sudden slip through the gas peddle. The engine then would only rev when i pushed the gas. I down shifted to 3rd gear and it grabbed and as soon as I pushed the gas again I felt the same slip again. I put it in neutral and the engine shut completely off. I have yet to get it started again. The engine turns over like it wants to start but it will not. If I try to start the engine and put it in gear it grabs like it wants to go but the engine will not start. I'm at a total loss and I do not know what to do. Any suggestions would be great , thanks!

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Unread 07-10-2011, 11:48 AM   #2
baldfatdad
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Join Date: Nov 2009
Location: florida
Posts: 614
out of gas?
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Unread 07-10-2011, 11:54 AM   #3
agear
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1984 CJ7 
 
Join Date: May 2011
Location: norfolk, virginia
Posts: 1,800
That's what it sounds like to me. It's a simple thing to try. Try putting a few gallons in the tank and you might have to squirt a little gas in the carburetor and then crank. Or maybe some starting fluid. Just to get it primed. I think they say an engine has to have , fire, fuel, and air, and I don't know if there is 4th one, to start.
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Unread 07-10-2011, 11:57 AM   #4
jhedges15
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1973 CJ5 
 
Join Date: Feb 2010
Location: Missouri
Posts: 79
Quote:
Originally Posted by agear
I think they say an engine has to have , fire, fuel, and air, and I don't know if there is 4th one, to start.
It's spark, fuel, and compression.
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Unread 07-10-2011, 12:29 PM   #5
C_H2O
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1953 CJ3B 
 
Join Date: Jul 2011
Location: Chesapeake, VA
Posts: 6
The 4th is "TIME"
spark,fuel & air, and they have to get there at the right time.
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Unread 07-10-2011, 01:03 PM   #6
ZooCrazie
Registered User
1978 CJ5 
 
Join Date: Nov 2010
Location: Rutledge, TN
Posts: 3
it has a full tank of fuel. Getting a spark..i've had several suggestions that maybe its jumped time? uhhh Neutral switch? i think some one told me somthing about a modulator Valve?
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