1968 suddenly wont start
Thread Starter
Cruising
Joined: Jun 2021
Posts: 10
Likes: 4
1968 suddenly wont start
I have a fully restored numbers match 1968 427 convert that decided not to start today
car turns over , but i noticed that the brake reminder light doesn't come on now when moving key to ignition start position.
car wants to start but clearly an electrical matter.
the fuses appear fine
Suggestions?
Thanks
car turns over , but i noticed that the brake reminder light doesn't come on now when moving key to ignition start position.
car wants to start but clearly an electrical matter.
the fuses appear fine
Suggestions?
Thanks
Drifting
Joined: Nov 2013
Posts: 1,547
Likes: 282
From: Scottsdale Arizona
Check if there’s a stream of fuel when you work the throttle linkage. Check to see if you have spark. Those are the two basic things to look at. Beyond that, unknown since you didn’t provide much info. Does your car still have points or is it converted to HEI? More things to check if that’s the case.
Drifting
Joined: Aug 2019
Posts: 1,339
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How old are those points? Do you have a dwell meter? What you can do is disconnect the lead on the coil (negative)( going to the distributor. Then connect a jumper to the negative terminal. With the key in the run position, tap that lead to ground, if you now get spark, points/condenser should be replaced. If no spark, then we'll check coil resistance. Primary should be about 1.5 ohms, secondary about 9000 ohms.
Last edited by Mrvettenick; Jun 18, 2021 at 06:51 PM.
Race Director
Joined: Mar 2016
Posts: 14,402
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From: Napa Valley California
Fuel and no spark!
How long has it been since you last started it?
Have you done any work to it since you last ran the engine?
Points and or condenser changed?
If you have 12 volts at the coil with the key on, but no spark, my bet would be the coil went out.
$15.00 coil should get you on the road.
How long has it been since you last started it?
Have you done any work to it since you last ran the engine?
Points and or condenser changed?
If you have 12 volts at the coil with the key on, but no spark, my bet would be the coil went out.
$15.00 coil should get you on the road.
Last edited by OldCarBum; Jun 18, 2021 at 06:39 PM.
Thread Starter
Cruising
Joined: Jun 2021
Posts: 10
Likes: 4
Drove it yesterday with no problems or symptoms.
Parked it for one day. battery new and strong. going to check for power to coil.Replacing all fuses with new to eliminate obvious first, then start metering.
I know something is wrong because with 68 the e brake reminder comes on when in the ready position( just before crank position ), and now it isn't.
I really appreciate the help Fellas !!!
Parked it for one day. battery new and strong. going to check for power to coil.Replacing all fuses with new to eliminate obvious first, then start metering.
I know something is wrong because with 68 the e brake reminder comes on when in the ready position( just before crank position ), and now it isn't.
I really appreciate the help Fellas !!!
Last edited by 1968Corvette1968; Jun 18, 2021 at 07:02 PM.
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Race Director
Joined: Mar 2016
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From: Napa Valley California
If you have less than 12 volts at the coil, then I would check the battery to ground cable.
Even if the connections are tight, the cable could be corroded under the insulation and not be providing a good ground.
Even if the connections are tight, the cable could be corroded under the insulation and not be providing a good ground.
Thread Starter
Cruising
Joined: Jun 2021
Posts: 10
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is there a fuse or a linkable fuse that runs from the ignition to the coil as I’m getting no power to the coil
And again to state the obvious normally when the car goes to the pre crank stage the brake lamp that is located on the RPM dial lights up. And that is not occurring.
2026 Loser of the Year
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From: New Or-leens Loo-z-anna
Throwing this out there as a last resort.....
my 68 had 13V going into the Ign FUSE and 13V exiting the Ign Fuse....
but only 3-4V going to the coil +......
the terminals on the Back of the Fuse Block were covered in green corrosion.
my 68 had 13V going into the Ign FUSE and 13V exiting the Ign Fuse....
but only 3-4V going to the coil +......
the terminals on the Back of the Fuse Block were covered in green corrosion.
Thread Starter
Cruising
Joined: Jun 2021
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Is my vette stock?? HAHA
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From: Im not allowed to tell you
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attach a voltage meter to the coil and see if you have power in the key on position, then turn it to crank and see if you have power wwhile its cranking. Most likely you lost the power during cranking and the fusible link at the starter solenoid burned out or its a fuse if Bubba hasnt gotten to your wiring. It is the yellow wire at the starter
could be wring at the ignition switch but I doubt it
could be wring at the ignition switch but I doubt it
Last edited by Rescue Rogers; Jun 19, 2021 at 09:23 AM.
Drifting
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It's going to take more than a magic wand to figure it out.
Last edited by Mrvettenick; Jun 19, 2021 at 10:22 AM.
Is my vette stock?? HAHA
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if there is power with key on and not key start, check the yellow wire. trace power.
If theres power on both then its the coil or the points.....If thats all good pull a plug and see if the carb sprung a leak oner night and its flooded. maybe the float bowl stuck
If theres power on both then its the coil or the points.....If thats all good pull a plug and see if the carb sprung a leak oner night and its flooded. maybe the float bowl stuck
Last edited by Rescue Rogers; Jun 19, 2021 at 10:33 AM.
Drifting
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OK! I was referring to the OP. He really has not done any testing except for visuals.
Is my vette stock?? HAHA
Joined: Oct 2015
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From: Im not allowed to tell you
2020 C3 of the Year Finalist - Modified
2020 Corvette of the Year Finalist (performance mods)
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I just realized that and was editting when you posted. That was my mix up and mistake. You and I are on the same path for a resolution
Last edited by Rescue Rogers; Jun 19, 2021 at 10:35 AM.