Help 77 corvette

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Jun 19, 2012 | 05:46 PM

Corey kittle

Thread Starter

Cruising

Joined: Jun 2012

Posts: 13

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Help 77 corvette

I have a 77 corvette that has a starting problem I've replaced fuel lines the rubber ones, new carb new fuel pump and still have the same problem when the car sits for like 30 mins it has to turn over and over before it will start. Need help thanks

Jun 19, 2012 | 05:49 PM

ATIS

Racer

Joined: Mar 2012

Posts: 396

Likes: 13

From: New Bern NC

Sounds like it might have leak down (IE the bowl is draining). Have you had the carb rebuilt? I am asuming a Quadrajet.

Jun 19, 2012 | 06:29 PM

Corey kittle

Thread Starter

Cruising

Joined: Jun 2012

Posts: 13

Likes: 0

Yes a guadrajet I bought a new re built one. When I first got the car it worked fine for like two months then it stared doing this so I've pulled all my hair out trying to solve this prob but no luck.

Jun 19, 2012 | 06:35 PM

mad pad house

Racer

Joined: Mar 2008

Posts: 476

Likes: 6

May have old seals in fuel pump.

Jun 19, 2012 | 06:58 PM

Corey kittle

Thread Starter

Cruising

Joined: Jun 2012

Posts: 13

Likes: 0

Fuel pump is ab 6 months old

Jun 19, 2012 | 08:39 PM

iokepakai

Burning Brakes

Joined: Apr 2007

Posts: 1,039

Likes: 62

From: Kona Hawaii

Check for fuel percolation.After shutdown wait a few minutes and look down the carb throat to see if fuel is dripping down into the manifold.Carb gets heat soaked ,fuel boils over down into the manifold.Next time you start it the fuel bowl is empty and engine needs to be cranked a lot to fill the bowl with fuel.Today's ethanol blend fuel boils at a lower temp.If this is your problem install a heat shield and a thicker gasket,spacer.Good luck...

Jun 19, 2012 | 08:55 PM

jman1

Le Mans Master

Joined: Jul 2003

Posts: 7,501

Likes: 1

From: Maine

i would start with a spacer under the carb to see if that helps.. mine does the same thing.. new carb, distributor fuel pump... that spacer helped a huge amount....

Jun 19, 2012 | 09:03 PM

iokepakai

Burning Brakes

Joined: Apr 2007

Posts: 1,039

Likes: 62

From: Kona Hawaii

Something like this may help:[IMG]

[/IMG]

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Jun 20, 2012 | 06:30 AM

Corey kittle

Thread Starter

Cruising

Joined: Jun 2012

Posts: 13

Likes: 0

Sounds good at this point I'll try anything. Were would I get a spacer or heat shield from??

Jun 20, 2012 | 08:49 AM

#10

gungatim

Burning Brakes

Joined: Apr 2008

Posts: 1,222

Likes: 93

From: shelbyville West Michigan

read post # 2. I was going to suggest the check valve in the fuel filter as well but he's got even more betterer info.

http://forums.corvetteforum.com/c3-t...o-i-epoxy.html

Jun 20, 2012 | 07:08 PM

#11

iokepakai

Burning Brakes

Joined: Apr 2007

Posts: 1,039

Likes: 62

From: Kona Hawaii

Here's the link:http://www.summitracing.com/parts/MRG-3712/

Jun 20, 2012 | 08:36 PM

#12

Corey kittle

Thread Starter

Cruising

Joined: Jun 2012

Posts: 13

Likes: 0

Thanks, I'll give it a try!

Jun 20, 2012 | 08:42 PM

#13

mds3013

Melting Slicks

Joined: Mar 2009

Posts: 3,126

Likes: 15

Mine does the same. Hold accelerator pedal to the floor and attempt to start. It should start quicker with the pedal to the floor. If so carb. is causing a flooded condition. I have not sloved mine yet but will be looking at some type of over rich condition. If yours starts better with the pedal to the floor it might have the same condition. mike...