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Old 07-08-2006, 03:56 PM
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Novice,..70's Engine turns over, won't start?

first time this happened. (weekend car 74 pontiac 455). drove it about 3 miles, went to re-start. eng turns over but would not start. fuel pump was running, plenty of gas, etc..
let it sit for 30 min..it started, but engine sounded rough. (gave it gas, it popped and blew a little smoke. was able to get it home, started to run hot. Unable to re-start it at home. any thing a novice can check???

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Old 07-08-2006, 04:35 PM
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is it points or hei dizzy?
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Old 07-08-2006, 04:38 PM
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Doc here,

Pull the module and have it checked, sounds like heat failure..

If you need a new one have it checked several times before you leave the store...to be sure it too is good..and don't forget the heat sink compound when installing ... or you'll be doing it again within a few days..

If that checks good, check the coil..

Set your DVOM to R X 1, ohms, calibrated to 000, measure the Batt to tach terminals , the primary. It should read less than an Ohm, but more than 000..

Next , measure the secondary, set your scale to R X 10k or higher..measure between the carbon pickup for the rotor and the BATT terminal. It should read between 6000 and 30,000 ohms.

Outside of those ranges, get a new coil.

Doc
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Old 07-08-2006, 11:29 PM
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When you get it started does your temp gauge climb real fast? Any recent modifications to the engine?

Check your timing also.
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Old 07-10-2006, 08:37 AM
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did not heat up real fast, no modifications. I still need to check module/coil.
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Old 07-10-2006, 10:49 AM
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The timing chain could have jumped time.....thats about what it sounds like..hard to start, runs rough, pops back, and overheating.
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Old 07-10-2006, 10:58 AM
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Thanks!

having it looked at tonight.. making a list of everyones input. Thank You!
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Old 07-10-2006, 05:30 PM
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Doc here,

If you had correct static timing,#1 TDC , Compression, both valves closed, and marks aligned, The timing DID NOT jump...a Compression test will bear this out..(low compression on all cylinders)

If it just started out of the blue on a drive, I'd suspect the module (very heat sensitive) and / or coil.., shorted Tachometer or Dizzy wiring, Water in the coil well (on an HEI) Carbon trails inside the cap, OR burned or bent valves..

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Old 07-11-2006, 08:23 AM
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Started right up

Started and sounded good?. Not able to test drive though. Was told possible air lock in fuel line.
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Old 07-11-2006, 08:23 PM
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It was a bad Coil!

went and had it tested and tested the new one. Thanks for the help!
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Old 07-11-2006, 09:01 PM
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Glad you got it fixed and glad you told us the fix............That DocVette is hard to beat figuring things out.
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Old 07-12-2006, 08:53 AM
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Thanks Doc!

I believe you also helped me out with a fuel pump problem about 7 months ago. great web site!
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Old 08-03-2006, 01:16 PM
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update... found the problem

car ended up having a blown head gasket. The water on the ground and the mucky stuff on the radiator cap (oil that seeped in) I guess should of told me something. It's odd the car would start and run until I tried to restart. I completely stripped the starter too.
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Old 08-03-2006, 06:09 PM
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Doc here,

Sounds like you hydraulicked one or more cylinders..(water won't compress, will lock an engine..) Too bad you didn't get a compression test in before..you'd most likely seen water BEFORE the damage occurred.

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Old 08-03-2006, 07:30 PM
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Quote:
Originally Posted by dhomsey
car ended up having a blown head gasket. The water on the ground and the mucky stuff on the radiator cap (oil that seeped in) I guess should of told me something. It's odd the car would start and run until I tried to restart. I completely stripped the starter too.

Damn---just hate when that happens

I did NOT take my 94 T-bird in for a recall in 2000---2002 HG blew--car hydraulicked---had it towed to a shop and had em put a rebuilt in---was not gonna mess with it--was travelling a LOT--had no time. Car had 120k when it happened--already have 60k on the new motor.

Drive 'em 'til the wheels fall off

Bryan
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