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

Car Running Like CRAP !!!!!!!!!!!!!!!!!!!

Thread Tools
 
Search this Thread
 
Old Apr 12, 2011 | 11:48 PM
  #1  
gnf1953's Avatar
gnf1953
Thread Starter
Heel & Toe
 
Joined: May 2009
Posts: 21
Likes: 1
Default Car Running Like CRAP !!!!!!!!!!!!!!!!!!!

I have a 1986 Corvette coupe.....60k miles. I don't know if I have 2 seperate problems. The first thing that happened was the gas pedal sticking. My mechanic put a new spring and said to use hightest and fuel injector cleaner for a month. Car started to run worse. I took it to a different guy.....he changed the plugs, wires and did some tests....told me I was only running on 6 cyl and to use hightest and a good fuel injector cleaner for a couple of tank fulls. He told me # 6 and # 8 plugs are not working. Plus...I'm using gas like crazy too. I'm going nuts here.......HELP !!!!! PLEASE !!!!!!!!!!!!! Thank you. gnf1953@***.net
Reply
Old Apr 13, 2011 | 12:00 AM
  #2  
GREGGPENN's Avatar
GREGGPENN
Race Director
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Nov 2003
Posts: 12,220
Likes: 446
From: Overland Park Kansas
2020 Corvette of the Year Finalist (appearance mods)
C4 of Year Winner (appearance mods) 2019
Default

ohm your injectors...hot and cold. See if 6 & 8 are significantly less than 16ohms. All should read in that area.

Also, your injector coils might be stuck (all/partially) open on those cylinders. Injector cleaning may not cure that.
Reply
Old Apr 13, 2011 | 12:09 AM
  #3  
leesvet's Avatar
leesvet
Safety Car
10 Year Member
 
Joined: Apr 2011
Posts: 3,660
Likes: 22
Default

sounds like more hillbilly mechanics...

when you have dead cylinders, you FIND OUT WHY. You do NOT tell the customer to go home and use the mecmahic in a bottle "cause he ain;t as lazy as I am"....

what a hoot.
ANyone with a craftman box is now a technitian..

Test them 2 injectors and see what ya got. Probaly leaking all your fuel into the cylinder washing off all the lube oil and getting into the pan as well where the excess gas is ruining that oil as well.

Pull those 2 plugs and see if they are wet. If so, park the car until someone can tear the broken injectors OUT and throw them away.
Order new fuel inj from Jon at FIC and spend $200 to fix this, do it yourself, and forget the brainsurgeons that obviousl;y do not want to work on the car.

Last edited by leesvet; Apr 13, 2011 at 12:06 PM.
Reply
Old Apr 13, 2011 | 12:46 AM
  #4  
gkrynick22's Avatar
gkrynick22
Racer
 
Joined: Jun 2009
Posts: 429
Likes: 0
From: Marlborough CT
Default

Originally Posted by leesvet
sounds like more hillbilly mechanics...

when you have dead cylinders, you FIND OUT WHY. You do NOT tell the customer to go home and use the mecmahic in a bottle "cause he ain;t as lazy as I am"....

what a hoot.
ANyone with a craftman box is now a technition..

Test them 2 injectors and see what ya got. Probaly leaking all you fuel into the cylinder washing off all the lube oil and getting into the pan as well where the excess gas is ruining that oil as well.

Pull those 2 plugs and see if they are wet. If so, park the car until someone can tear the broken injectors OUT and throw them away.
Order new fuel inj from Jon at FIC and spend $200 to fix this, do it yourself, and forget the brainsurgeons that obviousl;y do not want to work on the car.
Don't mean to hijack but, what does FIC stand for. I plan on doing injectors this winter.
Reply
Old Apr 13, 2011 | 07:09 AM
  #5  
eaglevision993's Avatar
eaglevision993
Racer
 
Joined: Sep 2010
Posts: 305
Likes: 2
From: Epfenbach BW
Default

Fuel Injector Connection, I also got my new Bosch III from them.
They are sure worth the money.
Replacing them yourself is not that complicated but needs patience and time on hand for those never done this before.
Reply
Old Apr 13, 2011 | 08:05 AM
  #6  
gkrynick22's Avatar
gkrynick22
Racer
 
Joined: Jun 2009
Posts: 429
Likes: 0
From: Marlborough CT
Default

Originally Posted by eaglevision993
Fuel Injector Connection, I also got my new Bosch III from them.
They are sure worth the money.
Replacing them yourself is not that complicated but needs patience and time on hand for those never done this before.
Thanks
Reply

Get notified of new replies

To Car Running Like CRAP !!!!!!!!!!!!!!!!!!!





All times are GMT -4. The time now is 09:16 AM.

story-0
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-1
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-2
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-3
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-4
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-5
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-6
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE
story-7
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE
story-8
5 MOST and 5 LEAST Popular Corvette Model Years in History!

Slideshow: 5 most and least popular Corvette model years.

By Joe Kucinski | 2026-04-08 13:25:01


VIEW MORE
story-9
2027 Corvette Buyer's Guide: Everything You Need to Know!

Slideshow: 2027 Corvette buyer's guide

By Joe Kucinski | 2026-04-17 16:41:08


VIEW MORE