69 Supreme wont start

nohn · 05-04-2007, 01:52 AM

I am having an issue getting my 69 Supreme started. I just installed a new Edelbrock manifold, 4 bbl carb, and fuel line. I also replaced the Coil and spark plugs, wires, cap etc. Now I can't get it to start. It took me a month or so to get every thing completed because of shipping to Italy and having the down time to do it. So the car hasn't been started in a month or longer. I'm stuck can't figure out what can be the issue.

Oldsguy · 05-04-2007, 05:00 AM

Go back to the last time it was running and re-check anything you changed after that. All new stuff? If not (old, or rebuilt carb) it could be that. You might have a leak at the intake manifold or carb, it could be the carb is dry, it might be your spark/timing. Lots of things, just go back and re-check everything you changed one item at a time.

joe_padavano · 05-04-2007, 06:55 AM

What does is do? Does it turn over but not start? Go back to basics. Verify that you have spark, that the firing order is correct, and that the timing is correct. You can use a timing light while the engine is cranking.

Check for fuel. With the engine off, pump the throttle while looking down the carb to verify you get a squirt from the accelerator pump. Verify the choke closes when cold. At this point, the only thing left is a massive vacuum leak.

nohn · 05-04-2007, 11:58 PM

I checked everything that I changed. All was correct. The carb and manifold is new straight out of the box. I'm getting gas to the carb, I was able to put my finger inside to check if gas was going into the carb and all was good. The car turns over just doesn't start. I haven't checked the timing yet once I get the timing light I will do that. I’m good on the choke closing. The only difference I believe from before is the gap on the spark plugs. I’m not sure about that though. The manual and looking online the gap can be 3.5-4.5. Is that correct? My plugs are gapped at 4.5. Thanks for the feedback.

05-04-2007, 01:52 AM	#1 (permalink)
nohn Member Join Date: Oct 2006 Location: Naples, Italy Posts: 50	69 Supreme wont start I am having an issue getting my 69 Supreme started. I just installed a new Edelbrock manifold, 4 bbl carb, and fuel line. I also replaced the Coil and spark plugs, wires, cap etc. Now I can't get it to start. It took me a month or so to get every thing completed because of shipping to Italy and having the down time to do it. So the car hasn't been started in a month or longer. I'm stuck can't figure out what can be the issue.

05-04-2007, 05:00 AM	#2 (permalink)
Oldsguy Administrator Join Date: May 2004 Location: Lees Summit MO Posts: 2,775	Go back to the last time it was running and re-check anything you changed after that. All new stuff? If not (old, or rebuilt carb) it could be that. You might have a leak at the intake manifold or carb, it could be the carb is dry, it might be your spark/timing. Lots of things, just go back and re-check everything you changed one item at a time. __________________ Dan '46 2 door

05-04-2007, 06:55 AM	#3 (permalink)
joe_padavano Moderator Join Date: Mar 2007 Location: Northern VA Posts: 1,454	What does is do? Does it turn over but not start? Go back to basics. Verify that you have spark, that the firing order is correct, and that the timing is correct. You can use a timing light while the engine is cranking. Check for fuel. With the engine off, pump the throttle while looking down the carb to verify you get a squirt from the accelerator pump. Verify the choke closes when cold. At this point, the only thing left is a massive vacuum leak. __________________ Joe Padavano 64 Jetstar 88 Conv 66 442 L-69 Conv 68 W-30 69 H/O 69 442 70 W-30 72 442 84 Custom Cruiser 86 Caprice wagon (w/307 Olds)

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05-04-2007, 11:58 PM	#4 (permalink)
nohn Member Join Date: Oct 2006 Location: Naples, Italy Posts: 50	I checked everything that I changed. All was correct. The carb and manifold is new straight out of the box. I'm getting gas to the carb, I was able to put my finger inside to check if gas was going into the carb and all was good. The car turns over just doesn't start. I haven't checked the timing yet once I get the timing light I will do that. I’m good on the choke closing. The only difference I believe from before is the gap on the spark plugs. I’m not sure about that though. The manual and looking online the gap can be 3.5-4.5. Is that correct? My plugs are gapped at 4.5. Thanks for the feedback.