C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

C4 1984 bugging problem

Thread Tools
 
Search this Thread
 
Old Sep 3, 2023 | 05:42 PM
  #1  
ssro's Avatar
ssro
Thread Starter
Instructor
 
Joined: May 2023
Posts: 120
Likes: 10
Default C4 1984 bugging problem

So whrn i start it its fine, first 10 mins it fine when i press on gas i have power revs fine, but 15-20 min in cruzing i press on gas and it bugs and sluginsh, wont rev
Reply
Old Sep 3, 2023 | 07:19 PM
  #2  
Jud Chapin's Avatar
Jud Chapin
Race Director
Supporting Lifetime
20 Year Member
St. Jude 15 Year Donor
Liked
Community Favorite
 
Joined: Sep 2001
Posts: 10,560
Likes: 439
From: Wellington, FL
St. Jude Donor '11 thru '25
Default

Take a look at the fuel sock. It might be bending under suction. I went thru this with my ‘84 once. It got to where it would barely run.
Reply
Old Sep 4, 2023 | 01:40 PM
  #3  
VikingTrad3r's Avatar
VikingTrad3r
Oil Producer
Supporting Gold
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Apr 2014
Posts: 9,371
Likes: 2,736
Default plugged 85 fuel sock for reference.


would start and idle and even run. but as soon as you asked for much throttle it would vacuum itself shut. required turning it off and back on the release the vacuum.
Reply
Old Sep 11, 2023 | 10:30 AM
  #4  
Whaleman's Avatar
Whaleman
Safety Car
Liked
Loved
Community Favorite
Top Answer: 3
 
Joined: Mar 2017
Posts: 4,201
Likes: 1,323
From: LeClaire Iowa
Default

Also could be the ICM is getting hot and messing up. Dan
Reply

Get notified of new replies

To C4 1984 bugging problem





All times are GMT -4. The time now is 12:15 PM.

story-0
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-1
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-2
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-3
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
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE