Shut engine off experianced run on, starts and runs a few seconds then wont start at all

Asked by kothornton Sep 08, 2014 at 09:12 AM about the 1967 Chevrolet Chevelle

Question type: Maintenance & Repair

I have a 1967 Chevy Chevelle with a Merlin big block Chevy motor. I was driving to a car show pulled in a parking lot shut the motor off and I had run on culminated by spoke through Carb. I wouldnt start after so I towed it home. I cleaned plugs and changed coil it starts and runs a few seconds dies and wont even fire untill the next day? I have fuel it has MSD spark box. Do you have any ideas??

6 Answers

50,585

Can you check the MSD box to see if it's working properly?

1 people found this helpful.

I dont know how to check it, I guess if I start it and it fails again I can check and see if there is spark

50,585

Or just pull a plug and ground it good to see if you have spark.

1 people found this helpful.

I dont see a diode, however it has ran good for 3 years. I thought about the carb because it backfired through the carb before it shut down. I think there are some blowout valves in a Holley 4100 Thanks

75

To me sounds like carb.flote needle is leaking past and would cause the smoke from carb. After turning it off .

75

That leaking needle seat then would cause a flooding condition making it hard to start

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