hard starting when cold after 24 hours
Thread Starter
Pro
Joined: Jul 2020
Posts: 642
Likes: 105
From: Miami florida
Ok got both rubber fuel lines at pump and pump to carb metal line. i took my vette to a carb specialist that started pointing out a million things that look like it needs tuneup. the tune up kits i see online seem easy enough until you start researching. This is why @lars is the expert.
I took out the carb. Seems original. I see epoxy at the bottom which leads me to believe someone already attempted the leaking bowl situation. I ordered a rebuilt one from corvette mods and will take a look at the difference between them. I may send mine to @lars to rebuild if he's interested. While I was at it. I noticed the manifold gasket was leaking all around the sides where the valve covers meet it. I always thought it was my valve cover gaskets till I remembered I replaced them already. I took them off and looked carefully. Manifold gasket needs to go. I already removed bolts except the one holding the a/c compressor bracket to manifold. It stripped. I'll pickup a 12 point ratchet and attempt removal later this week.
So for now, waiting for intake manifold gaskets, new gasket for hei dist. new egr valve (cheap), new hose kit for egr, new carb and gasket, and then install the fuel lines. In for a penny in for a pound. Anything else I should look at/replace while I'm at it? except the engine? lol.
I took out the carb. Seems original. I see epoxy at the bottom which leads me to believe someone already attempted the leaking bowl situation. I ordered a rebuilt one from corvette mods and will take a look at the difference between them. I may send mine to @lars to rebuild if he's interested. While I was at it. I noticed the manifold gasket was leaking all around the sides where the valve covers meet it. I always thought it was my valve cover gaskets till I remembered I replaced them already. I took them off and looked carefully. Manifold gasket needs to go. I already removed bolts except the one holding the a/c compressor bracket to manifold. It stripped. I'll pickup a 12 point ratchet and attempt removal later this week.
So for now, waiting for intake manifold gaskets, new gasket for hei dist. new egr valve (cheap), new hose kit for egr, new carb and gasket, and then install the fuel lines. In for a penny in for a pound. Anything else I should look at/replace while I'm at it? except the engine? lol.
Thread Starter
Pro
Joined: Jul 2020
Posts: 642
Likes: 105
From: Miami florida
Manifold replacement gasket
You should only need to push the gas pedal once to the floor to set the choke and then start up. That's how it came from the factory and it should be no different now for a properly setup carb. So you still need to investigate why you need 5 times as many pumps to start from cold. Have you tried just one pump? Have you setup the choke to specs?
so I got a little crazy. I had a slight leak at the manifold and ordered a new gasket but then decided to order a new manifold and then a new egr etc. need help identifying some tubes npt piece etc to install clean:
Safety Car
Joined: Oct 2007
Posts: 4,383
Likes: 1,753
From: Seattle Area Washington
Photo 1: Cruise Control Servo & Rod 1978-Early 1979. If not going to be used and the servo holds vacuum save both servo and rod. They are getting hard to find in good working condition.
Photo 2: 5/8" Heater Hose
Photo 3: Vacuum Tee, be very careful with that, very fragile!
Left Side Cruise Control Transducer
Top A/T Transmission Vacuum Modulator
Right Side Headlights & HVAC
Photo 4:
Middle Finger Fresh Air from top rear port on Carburetor
Index Finger Carburetor Hot Air Choke inlet
Photo 2: 5/8" Heater Hose
Photo 3: Vacuum Tee, be very careful with that, very fragile!
Left Side Cruise Control Transducer
Top A/T Transmission Vacuum Modulator
Right Side Headlights & HVAC
Photo 4:
Middle Finger Fresh Air from top rear port on Carburetor
Index Finger Carburetor Hot Air Choke inlet
Last edited by bmotojoe; Feb 25, 2021 at 06:14 AM.
Thread Starter
Pro
Joined: Jul 2020
Posts: 642
Likes: 105
From: Miami florida
Photo 1: Cruise Control Servo & Rod 1978-Early 1979. If not going to be used and the servo holds vacuum save both servo and rod. They are getting hard to find in good working condition.
Photo 2: 5/8" Heater Hose
Photo 3: Vacuum Tee, be very careful with that, very fragile!
Left Side Cruise Control Transducer
Top A/T Transmission Vacuum Modulator
Right Side Headlights & HVAC
Photo 4:
Middle Finger Fresh Air from top rear port on Carburetor
Index Finger Carburetor Hot Air Choke inlet
Photo 2: 5/8" Heater Hose
Photo 3: Vacuum Tee, be very careful with that, very fragile!
Left Side Cruise Control Transducer
Top A/T Transmission Vacuum Modulator
Right Side Headlights & HVAC
Photo 4:
Middle Finger Fresh Air from top rear port on Carburetor
Index Finger Carburetor Hot Air Choke inlet
Last edited by michael lamoglia; Feb 25, 2021 at 02:52 PM.
