68 camaro cranking but not turning over - Team Camaro Tech
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post #1 of 6 (permalink) Old Jun 11th, 15, 02:09 PM Thread Starter
Kam
 
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68 camaro cranking but not turning over

Hey guys, so I had a heat soak problem originally. Had a new starter put in and most of my wiring replaced. Grounds are solid. Had the car out for a good run several days ago and after a long run it felt like it was backfiring from the carb. It even felt like it was going to stall at times. Anyhow it got parked and now it's cranking over but not turning over. I'm not that mechanically inclined. I did take the filter off and it's squirting fuel. From there I'm stuck. It's a 454 BB holley 750 carb. Not sure what to check or do next. I tried to boost it with my other car and still nothing. I'm located in Durham, Ontario. If anyone can help me out I'd appreciate it. Don't want to have it towed to a me Hani just yet. Thank you
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post #2 of 6 (permalink) Old Jun 11th, 15, 02:57 PM
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Re: 68 camaro cranking but not turning over

Pull a plug wire, stick a screwdriver in the boot and place next to a bolt on the motor.
Have someone crank the motor over and see if you have spark.
IF no... check your grounds first.
Also if no, pull the distributor cap and make sure the rotor turns as you crank the motor.

This is where I'd start.

68 Camaro~LSx ~all motor
1.54 60'--6.95 @ 98.45 660'--10.96 @ 121.53
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post #3 of 6 (permalink) Old Jun 11th, 15, 04:07 PM
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Smile Re: 68 camaro cranking but not turning over

Quote:
Originally Posted by Kambam68 View Post
and now it's cranking over but not turning over.
Cranking over and turning over is the same thing. Cranking over or turning over without firing is a different story.

I am not trying to be a smart a$$. Just clarifying for other readers.

69 Camaro -originally a LM1 car. 327, Edelbrock E-streets, hooker, DUI performance distributors, ultradyne cam, stewart, TRW etc. Vintage Air, AGR steering, Corbeau GTSII seats, 700R4 transmission, 12-bolt w/Eaton 4.11:1
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post #4 of 6 (permalink) Old Jun 11th, 15, 04:10 PM
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Re: 68 camaro cranking but not turning over

I'd try the 'fire' test myself too, first. I do it different. Just take a plug wire out and plug with it. Leave plug wire boot on spark plug and put the plug against the block. Then crank over to see if you have spark. thanks,

1976 Camaro, M20 Muncie 4 Speed, Hurst equipped
1972 Camaro, Full Drag Car
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post #5 of 6 (permalink) Old Jun 11th, 15, 06:25 PM
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Re: 68 camaro cranking but not turning over

It could be that the distributor aka "Dizzy" hold down bolt was not secured and it walked off the tune and now needs to be reset in order to fire in the correct sequence. Backfiring is often a symptom of miss tuned cars.


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post #6 of 6 (permalink) Old Jun 13th, 15, 03:45 PM
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Re: 68 camaro cranking but not turning over

Quote:
68 camaro cranking but not turning over
Say WHAT?

If it cranks, it IS turning over. It may not fire, it may not start, but it most certainly turning over.

From the body of your post I'd suspect the distributor clamp is slightly loose and the distributor has rotated retarding the timing. Check the timing with a timing light.

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