C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
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Old Aug 15, 2009 | 01:37 PM
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From: white hall ar
Default car quit running please read

i have a 78 -42k mile car .for about 2 weeks its been hard to start but eventually it will go .....last night i got in it it somewhat flooded but it did start ....went for a short ride .2 miles down the road it popped liked the distributor jumped out and died .....so i tried to start it and it started .....it ran about half a mile died again ......would not start .put it on a wrecker carried it home ....sat all night tried it again it sputtered but it started .i pulled it under my garage and it died again .....now all it does is turn over ........reckon its the electronic module .or whatever else .....i honestly think its not firing ....i gotta leave it alone for now because ive tons of other business to attend to ....but please give me your ideas .i really need to fix this myself,to many kids in school to send my toy out to a shop .im sure u all understand thank u for reading this
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Old Aug 15, 2009 | 01:51 PM
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Default no start

sounds Like a timming chain...you did say it made a pop noise right?
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Old Aug 15, 2009 | 01:59 PM
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Check for spark first.
Remove one of the plug wires.Put an old spark plug on the end and and lay the plug on the engine and crank the engine and watch for spark.
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Old Aug 15, 2009 | 04:48 PM
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Mine did this to me a few years ago. If you change out your ignition module and it doesn't fix it, as with mine, change your ignition pickup coil too. It did the trick for me.

You can confirm your timing chain is OK by taking off the distributor cap and cranking the motor over. If the rotor turns, your chain is working fine.
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Old Aug 15, 2009 | 04:59 PM
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thanks for all the replies
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Old Aug 15, 2009 | 06:28 PM
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Fuel pump issues? May be an internal failure. But the ignition module is a good culprit as well.
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Old Aug 15, 2009 | 10:17 PM
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Originally Posted by dstaley
You can confirm your timing chain is OK by taking off the distributor cap and cranking the motor over. If the rotor turns, your chain is working fine.
That will tell you the chain is still alive, but it won't give you any indication of chain stretch or the condition of the plastic teeth on the cam sprocket. Those sprockets are crap - they wear quickly and when old spit teeth off you have way too much slack in the chain to the point they can slip a tooth. The intent of using them was silent running, but the result is a lot of cam chains and sprockets need replacing.
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Old Aug 16, 2009 | 12:35 AM
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In my experience, timing chains slip when the engine is turned off and it really doesn't restart after that. Since yours restarted, I would check for spark first. If you think the chain did slip, bring cylinder #1 to TDC on the compression stroke and see where the rotor points in respect to the #1 position on the cap.
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Old Aug 16, 2009 | 12:57 AM
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Sputtering, semi starting etc all indicate (some) spark, and fuel, valves are opening and closing (timing chain ok). This narrows things to how well the spark is being delivered/timed.

If your budget can handle it, you might consider just putting in a new or known good used dist. - otherwise rebuild the one you have but that may cost more.
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