C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
Sponsored by:
Sponsored by:

QJet overflow

Thread Tools
 
Search this Thread
 
Old Yesterday | 06:07 PM
  #1  
CubeBrick's Avatar
CubeBrick
Thread Starter
Instructor
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Feb 2023
Posts: 233
Likes: 341
From: Croatia
Default QJet overflow

Not my car, my friend's.... 1991. Camaro with C3 SBC350 1978. engine. Car was parked on a slight downward slope. Have you ever seen anything like this?

Reply
Old Yesterday | 06:15 PM
  #2  
Piersonpie's Avatar
Piersonpie
Melting Slicks
Shutterbug
Loved
Community Favorite
Top Answer: 5
 
Joined: Apr 2021
Posts: 2,745
Likes: 2,186
From: Minnesota
Default

Interesting. Any issues with the car running besides all that extra gas on top?
Reply
Old Yesterday | 06:18 PM
  #3  
barkingrats's Avatar
barkingrats
1967 Pedal Car Champion
Supporting Gold
 
Joined: Mar 2020
Posts: 9,211
Likes: 4,296
From: US-PNW
Default

The intake (and some cylinders and the exhaust) is full of fuel? 😬 😱

Does he have an electric fuel pump — with a malfunctioning float?
Reply
Old Yesterday | 06:55 PM
  #4  
CubeBrick's Avatar
CubeBrick
Thread Starter
Instructor
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Feb 2023
Posts: 233
Likes: 341
From: Croatia
Default

This happened while parked on the slope whit engine turned OFF. He has a mechanical pump with weirdly enough, pessure of 9.5psi which is too high so he installed pressure regulator turning it down to 4.5 psi. One weird thing is that same thing happens during heavy braking. Needle and seat are obvious problem along with the faulty float. But to see the fuel pouring in galons... Weird IMHO.
Reply
Old Yesterday | 09:28 PM
  #5  
DaveL82's Avatar
DaveL82
Drifting
25 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Jul 1999
Posts: 1,543
Likes: 43
From: Plano TX
Default

Check float height per the serial number on the carb and make sure the needle, needle clip, and float are assembled correctly. Possible high fuel pressure caused a part to fail.
Reply

Get notified of new replies

To QJet overflow





All times are GMT -4. The time now is 12:26 AM.

story-0
2027 Chevrolet Silverado 1500 First Look: Everything You NEED to Know!

Slideshow: Is the 2027 Chevrolet Silverado 1500 the best Silverado yet?

By Michael S. Palmer | 2026-06-16 08:01:12


VIEW MORE
story-1
5 Best & 5 Worst Corvette Daily Drivers

Slideshow: 5 best and 5 worst Corvette daily drivers

By Joe Kucinski | 2026-06-15 10:32:13


VIEW MORE
story-2
The Headlights of Every Corvette Generation Explained

Slideshow: The headlights of every Corvette generation explained

By Joe Kucinski | 2026-06-15 10:17:14


VIEW MORE
story-3
5 Best & 5 Most Overrated Corvette Track Packages of All Time!

Slideshow: The 5 best and 5 most overrated Corvette track packages ever.

By Joe Kucinski | 2026-06-09 12:46:45


VIEW MORE
story-4
Every 2027 Corvette Engine Explained

Slideshow: Every 2027 Corvette engine explained

By Joe Kucinski | 2026-06-09 12:16:31


VIEW MORE
story-5
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette

Slideshow: A Jaguar designer's personal project imagines what a modern front-engined Corvette might look like if Chevrolet revisited the golden age of the Stingray.

By Verdad Gallardo | 2026-06-08 19:53:43


VIEW MORE
story-6
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-7
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-8
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-9
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE