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

Injector installation problem

Thread Tools
 
Search this Thread
 
Old Sep 11, 2010 | 06:32 PM
  #1  
rob-cyn's Avatar
rob-cyn
Thread Starter
Drifting
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Aug 2007
Posts: 1,846
Likes: 128
From: Orlando Florida
Default Injector installation problem

Started the removal of my injectors last night. got the fuel rail off after pulling the pump fuse and letting the car die. Pulled a couple of injectors out and a storm came rolling in real fast so I laid the fuel rail back onto the manifold and closed the car up for the night. Went out there this afternoon and there is gas under my car, lots of it. Finished installing the injectors and went to start it and the car wont crank and it started pushing fluid out of the oil dipstick. It is possible that the fuel kept pulling out of the tank all night and filled the crank case because it is full of something and I noticed fuel in runners on the manifold.
Reply
Old Sep 11, 2010 | 07:13 PM
  #2  
STL94LT1's Avatar
STL94LT1
Race Director
20 Year Member
Conversation Starter
All Eyes On Me
Liked
 
Joined: Jan 2002
Posts: 12,261
Likes: 85
From: O'Fallon Missouri
Default

If you left the gas cap on, yes it will continue to build pressure. I would drain the crankcase ASAP!!
Reply
Old Sep 11, 2010 | 07:21 PM
  #3  
rob-cyn's Avatar
rob-cyn
Thread Starter
Drifting
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Aug 2007
Posts: 1,846
Likes: 128
From: Orlando Florida
Default

Yes. I am going to, another storm just rolled in
Reply
Old Sep 11, 2010 | 07:33 PM
  #4  
Lemme's Avatar
Lemme
Drifting
15 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Nov 2009
Posts: 1,341
Likes: 2
From: Perth Western Australia
St. Jude Donor '10
Default

I have ended up with a few sumps full of fuel even with all my injectors in. I have since replaced the injectors and am hoping to have solved the issue.

The fuel will continue to run into the fuel rail from both the feed and return lines till the tank is almost empty. I think it would be getting into the manifold and sump from the feed line only as the fuel pressure regulator should stop reverse flow back into the injector side of the fuel rail.

Check your dipstick level.

Also make sure you plug your fuel lines while you have the fuel rail off. I used a length of rubber fuel line and plugged one end into the feed line and the other into the return line.

Last edited by Lemme; Sep 11, 2010 at 10:33 PM.
Reply
Old Sep 11, 2010 | 08:00 PM
  #5  
rob-cyn's Avatar
rob-cyn
Thread Starter
Drifting
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Aug 2007
Posts: 1,846
Likes: 128
From: Orlando Florida
Default

Oh the engine is full. Its storming now so I am done for the night.
Reply
Old Sep 11, 2010 | 08:08 PM
  #6  
John A. Marker's Avatar
John A. Marker
Le Mans Master
15 Year Member
 
Joined: Mar 2004
Posts: 5,107
Likes: 171
From: Dublin CA
Default

Do not try and start the car until you pull the plugs or you will bend a rod! Be sure that all the fuel under the car is gone....air out the garage...please no sparks!!

You should have disconnected the fuel line from the rail and capped the line so it would not leak.

I would drain the oil to dump the fuel from the oil pan. You should also pull the plugs to see if there is fuel in the cylinders.


If you have fuel in the cylinders, you have issues. You need to get the fuel out of each cylinder. When they are empty, and aired out....before putting the plugs back in ...I would squirt some oil in each cylinder and turn the engine over by hand to get some oil on the walls before starting.
Reply
Old Sep 11, 2010 | 08:28 PM
  #7  
rob-cyn's Avatar
rob-cyn
Thread Starter
Drifting
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Aug 2007
Posts: 1,846
Likes: 128
From: Orlando Florida
Default

Okay. This is getting serious.
Reply
Old Sep 11, 2010 | 09:47 PM
  #8  
Keystring's Avatar
Keystring
Drifting
 
Joined: Aug 2006
Posts: 1,624
Likes: 2
From: Canandaigua New York
Default

Did you remove the gas cap to relieve the pressure?
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

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

 Michael S. Palmer
story-1

2027 Corvette vs The World: Every Model vs Closest Competitor

 Joe Kucinski
story-2

10 Most Common Corvette Problems of the Last 20 Years!

 Joe Kucinski
story-3

5 MOST and 5 LEAST Popular Corvette Model Years in History!

 Joe Kucinski
story-4

2027 Corvette Buyer's Guide: Everything You Need to Know!

 Joe Kucinski
story-5

10 Things C8 Corvette Owners Hate (But Won't Tell You)

 Joe Kucinski
story-6

10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!

 Brett Foote
story-7

Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)

 Joe Kucinski
story-8

Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!

 Michael S. Palmer
story-9

5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!

 Joe Kucinski
Old Sep 11, 2010 | 10:35 PM
  #9  
Lemme's Avatar
Lemme
Drifting
15 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Nov 2009
Posts: 1,341
Likes: 2
From: Perth Western Australia
St. Jude Donor '10
Default

Originally Posted by Keystring
Did you remove the gas cap to relieve the pressure?
I think he is working outside (like I do) so may not be a good idea with the storm.
Reply
Old Sep 12, 2010 | 12:08 AM
  #10  
rob-cyn's Avatar
rob-cyn
Thread Starter
Drifting
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Aug 2007
Posts: 1,846
Likes: 128
From: Orlando Florida
Default

Yes working outside as garage is too cramped to move around freely.
Reply
Old Sep 12, 2010 | 07:21 PM
  #11  
rob-cyn's Avatar
rob-cyn
Thread Starter
Drifting
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Aug 2007
Posts: 1,846
Likes: 128
From: Orlando Florida
Default

Got it started. Good oil pressure. Smoked like a bandit for at least an hour. Started checking into it and oil had made it all the way out of the throttle body. I have been shooting throttle body cleaner in there and it has ran better and smoked less each time. Still has good oil pressure but the gauges are erratic, tach bounces around and my coolant temp is stuck at 142 degrees. Continuously getting a c12 h27 and h15 codes that I cant seem to get rid of. I drove it around town and when I drove it easy, it did not smoke at all. Took it out and ran it hard and it starts to smoke again. If I let it sit and give the throttle body and intake a good cleaning, it will start back up and not smoke again. It doesnt look good.
Reply
Old Sep 12, 2010 | 07:39 PM
  #12  
joesgulfstream's Avatar
joesgulfstream
Drifting
 
Joined: Nov 2009
Posts: 1,884
Likes: 0
Default

I am going to do mine soon I hope I have better luck than you but anyway I wish you the best and hope she is alright.
Reply
Old Sep 12, 2010 | 08:12 PM
  #13  
rob-cyn's Avatar
rob-cyn
Thread Starter
Drifting
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Aug 2007
Posts: 1,846
Likes: 128
From: Orlando Florida
Default

Dont be a dumbass like me and let it sit overnight. If if had finished the whole job this probably would not have happened
Reply
Old Sep 12, 2010 | 08:41 PM
  #14  
joesgulfstream's Avatar
joesgulfstream
Drifting
 
Joined: Nov 2009
Posts: 1,884
Likes: 0
Default

Originally Posted by rob-cyn
Dont be a dumbass like me and let it sit overnight. If if had finished the whole job this probably would not have happened
Hey everybody makes mistakes.
Reply
Old Sep 13, 2010 | 06:17 AM
  #15  
Lemme's Avatar
Lemme
Drifting
15 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Nov 2009
Posts: 1,341
Likes: 2
From: Perth Western Australia
St. Jude Donor '10
Default

Originally Posted by rob-cyn
Got it started. Good oil pressure. Smoked like a bandit for at least an hour. Started checking into it and oil had made it all the way out of the throttle body. I have been shooting throttle body cleaner in there and it has ran better and smoked less each time. Still has good oil pressure but the gauges are erratic, tach bounces around and my coolant temp is stuck at 142 degrees. Continuously getting a c12 h27 and h15 codes that I cant seem to get rid of. I drove it around town and when I drove it easy, it did not smoke at all. Took it out and ran it hard and it starts to smoke again. If I let it sit and give the throttle body and intake a good cleaning, it will start back up and not smoke again. It doesnt look good.
Did you drain out all the fuel/oil mix and replace with new oil as advised?
Reply
Old Sep 13, 2010 | 10:25 AM
  #16  
383vett's Avatar
383vett
Race Director
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Apr 2003
Posts: 17,695
Likes: 1,666
From: moraga ca
Default

Reply
Old Sep 13, 2010 | 11:48 AM
  #17  
rob-cyn's Avatar
rob-cyn
Thread Starter
Drifting
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Aug 2007
Posts: 1,846
Likes: 128
From: Orlando Florida
Default

Yes. Oil made it all the way out of the throttle body and I think the exhaust is full of fluid to as she is bellowing out smoke and I can hear a crackling in the exhaust like something is frying in there. There is oil all throughout the engine. I have been cleaning the throttle body and manifold all the time and it does have residue in it every time I clean it. It smokes less and less so I am hoping it just needs to burn off all the fluids that made to where they should not have been as I drained 12 quarts out of the engine. I have never done anything this stupid to one of my cars before, what a lesson this is.
Reply

Get notified of new replies

To Injector installation problem

Old Sep 13, 2010 | 02:10 PM
  #18  
Lemme's Avatar
Lemme
Drifting
15 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Nov 2009
Posts: 1,341
Likes: 2
From: Perth Western Australia
St. Jude Donor '10
Default

I just had the heads and exhaust done when it happened to me. Very annoying to run all that oil through and clog it all up. Best thing I think is to run the engine nice and hot on a long run to burn it off. I changed out the plugs and filter as well.

What I found was the oil/fuel mix was getting sucked into the manifold through the pcv system.

The new injectors really make a difference so hopefully you will soon enjoy soon.
Reply
Old Sep 13, 2010 | 02:15 PM
  #19  
RetiredSFC 97's Avatar
RetiredSFC 97
Team Owner
15 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Jan 2009
Posts: 73,568
Likes: 33
From: Somewhere in Mo
St. Jude Donor '09-'10, '14
Default

I'm trying to figure out how this happened.
Reply
Old Sep 13, 2010 | 08:55 PM
  #20  
rob-cyn's Avatar
rob-cyn
Thread Starter
Drifting
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Aug 2007
Posts: 1,846
Likes: 128
From: Orlando Florida
Default

Stupid *** me took a couple of injectors out and it started pouring rain so I laid the fuel rail back down on the manifold and closed the hood. Did not get back to it until the next afternoon and gas had pushed up out of the tank and ran out of the ports that had no injectors and filled the engine with gas. What a mess. Tonight it ran great, no smoking, good oil pressure until I started getting on it and it started missing violently and the gauges went crazy. Let it cool down for a while and it was normal again. Ugh. I changed the coil to an msd unit I picked up at autozone, could it be frying my ICM ?
Reply



All times are GMT -4. The time now is 05:34 PM.

story-0
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-1
2027 Corvette vs The World: Every Model vs Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-20 17:58:41


VIEW MORE
story-2
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-3
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-4
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
story-5
10 Things C8 Corvette Owners Hate (But Won't Tell You)

Slideshow: 10 things C8 Corvette owners hate, but won't tell you.

By Joe Kucinski | 2026-04-01 18:36:07


VIEW MORE
story-6
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!

Slideshow: Should you add one of these incredible Corvettes to your garage?

By Brett Foote | 2026-04-01 18:14:05


VIEW MORE
story-7
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)

Slideshow: Every Corvette Grand Sport explained

By Joe Kucinski | 2026-03-26 07:13:44


VIEW MORE
story-8
Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!

Slideshow: Breaking down the 2027 Grand Sport, Grand Sport X, Stingray, and LS6 V8.

By Michael S. Palmer | 2026-03-26 13:48:45


VIEW MORE
story-9
5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!

Slideshow: 5 reasons bad drivers crash sports cars & 5 ways to avoid a costly shame!

By Joe Kucinski | 2026-03-25 16:32:55


VIEW MORE