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

1992 starting issues

Thread Tools
 
Search this Thread
 
Old Jul 30, 2015 | 12:32 AM
  #41  
TLS_Addict's Avatar
TLS_Addict
Thread Starter
Team Owner
 
Joined: Oct 2007
Posts: 26,745
Likes: 694
From: PA
Default

Hell of a night. Started about 9 pm as I had dinner with the in-laws.

Anyway, pulled the fuel lines and injectors and noticed the gas felt strange. As in, gas usually has a strange feel and this time I got a lot on my hands and it didn't evaporate quickly. Usually you can feel the air coming into contact with your hands after the gas evaporates, but this didn't.

I checked the fuel pressure and it was at 35. The pressure is getting progressively worse, which leads me to thinking fuel pump. So the injectors seemed to hold but the pressure began to drop. I primed the system twice more and gas shot out of the regulator at around 45 psi but the pressure went back into the 36 range instantly.

So, I figured I would go ahead and check the ohms. I forgot my new tester at work! Ugh!!!!!

So to the back I went and decided to pull the fuel pump. Inside I find what is a new looking pump but the sock on the end is full of crud. When I say the tank was gross I mean really bad. The gas was a strange yellow color and was in two distinct levels. By that I mean the top was clearer than the bottom. I had nothing to get the gas out but good ole fashioned red neck ideas. Since I haven't been working out my arms have shrunk and I could get about half of my forearm in the tank. So a water bottle with the top cut off was used to fish the last few gallons out. Lol in the gas was all sorts of dirt, grime, slime, and very cloudy yellow muck. After getting all I could out with that I used a few small towels to clean the bottom of the tank and get 99% of the left over debris out.

I took the pump off and yup, its new, although the sock on the end is dirty as hell. The pump is an Airtex E3270 from Autozone. Price is like $71.99. Are they a decent pump? I am afraid to throw it back in due to it sucking up crappy gas and just sitting in it for so long. I am going to replace it with an AC Delco tomorrow night along with a new sock for that too.

I said "I should change the oil since I have nothing better to do." And it took a wrench with another wrench in it for leverage to get the dang bolt out of the pan. My goodness, the Hulk must have out that on. Kicker was the filter was barely on.

The oil was the BLACKEST and thinnest I have ever seen. Not only that but when draining it from the catch can to a jug it was so thin that it reminded me of how milk sort of sticks to the side of the glass if you drink it fast and some is left. Yeah, that nasty Not only that but I took a good 5.5 quarts out of that engine so there was a large amount of gas in it.

All is good. Right? Wrong! I go to pull the oil fill cap and the freaking top of it comes off and the threaded section is left in the valve cover. Should turn out....right? Nope. That thing was so effing tight it took a damn adjustable wrench on the outside with solid pressure for 10 seconds to break it loose. No, I am not a wimpy guy, its someone has really messed with this car.

So yeah, no progress at all other than I about killed the battery so I have that on the charger.

Tomorrow night I will put the pump in with some fresh gas and see where the fuel pressure lands.

The car has not been driven in dang near two years, it is safe to say it is 2 year old gas so yeah, I bet the pump has had it.

Thoughts?

Last edited by TLS_Addict; Jul 30, 2015 at 12:36 AM.
Reply
Old Jul 30, 2015 | 12:37 AM
  #42  
TLS_Addict's Avatar
TLS_Addict
Thread Starter
Team Owner
 
Joined: Oct 2007
Posts: 26,745
Likes: 694
From: PA
Default

My only other fear is that the injectors will have issues.

They are 23 lb injectors but I can't find them listed by the part number on them. They look like Accel but not sure. Part number 01D115B.
Reply
Old Jul 30, 2015 | 09:36 AM
  #43  
antfarmer2's Avatar
antfarmer2
Race Director
 
Joined: Mar 2015
Posts: 15,926
Likes: 579
Default

I would get a new filter and replace it the right way. And flush the lines use a doulble does of lucas or seafoam in the gas then run it if it starts and dies still ohm your injectors if you find a bad one leave it unhooked and try. If you can't get the injectors working get bosch 3 from John at injection connection. You will be driveing soon. Wish I would have seen that the gas was so old.
Reply
Old Jul 30, 2015 | 09:43 AM
  #44  
TLS_Addict's Avatar
TLS_Addict
Thread Starter
Team Owner
 
Joined: Oct 2007
Posts: 26,745
Likes: 694
From: PA
Default

The new fuel filter doesn't have 10 attempts to start. Going to swap the pump and sock/screen that goes with it.

I will flush the lines out and have some fresh gas in it tonight with some Lucas fuel system cleaner. I use it quite regularly in my truck and my girls car.
Reply
Old Jul 30, 2015 | 09:47 AM
  #45  
antfarmer2's Avatar
antfarmer2
Race Director
 
Joined: Mar 2015
Posts: 15,926
Likes: 579
Default

Originally Posted by TLS_Addict
The new fuel filter doesn't have 10 attempts to start. Going to swap the pump and sock/screen that goes with it.

I will flush the lines out and have some fresh gas in it tonight with some Lucas fuel system cleaner. I use it quite regularly in my truck and my girls car.
Ok I would turn the key on a few times and release it out the schrader to help flush.
Reply
Old Jul 30, 2015 | 10:00 AM
  #46  
TLS_Addict's Avatar
TLS_Addict
Thread Starter
Team Owner
 
Joined: Oct 2007
Posts: 26,745
Likes: 694
From: PA
Default

Good idea. The engine needs a good cleaning when all is said and done.
Reply
Old Jul 30, 2015 | 10:03 AM
  #47  
antfarmer2's Avatar
antfarmer2
Race Director
 
Joined: Mar 2015
Posts: 15,926
Likes: 579
Default

Originally Posted by TLS_Addict
Good idea. The engine needs a good cleaning when all is said and done.
Don't evan think about power washing it.
Reply
Old Jul 30, 2015 | 10:07 AM
  #48  
TLS_Addict's Avatar
TLS_Addict
Thread Starter
Team Owner
 
Joined: Oct 2007
Posts: 26,745
Likes: 694
From: PA
Default

Haha, no way. Some simple green and a rag is about all I will do.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-1

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-2

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-3

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
story-4

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

 Joe Kucinski
story-5

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-6

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-7

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-8

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-9

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

 Michael S. Palmer
Old Jul 30, 2015 | 06:04 PM
  #49  
TLS_Addict's Avatar
TLS_Addict
Thread Starter
Team Owner
 
Joined: Oct 2007
Posts: 26,745
Likes: 694
From: PA
Default

The pump and sock will be in Saturday. Till the i am not touching the car. Lol I need a few evening away from it. Haha
Reply
Old Jul 30, 2015 | 06:46 PM
  #50  
1993C4LT1's Avatar
1993C4LT1
Race Director
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Oct 2011
Posts: 16,086
Likes: 819
From: Dallas Texas
2025 C4 of the Year Finalist - Modified
Default

I don't blame you
Reply
Old Jul 31, 2015 | 04:38 PM
  #51  
TLS_Addict's Avatar
TLS_Addict
Thread Starter
Team Owner
 
Joined: Oct 2007
Posts: 26,745
Likes: 694
From: PA
Default

So, apparently the strainer for the AC Delco pump isn't being made anymore????

Oh well, I'm sure a universal one will suffice. Pump is in so might throw it in tonight if I feel up to it.

Not that it's tough, I'm just tired as hell.
Reply
Old Jul 31, 2015 | 06:37 PM
  #52  
gimp's Avatar
gimp
Drifting
Supporting Lifetime
 
Joined: Jul 2015
Posts: 1,844
Likes: 375
From: San Jose, CA
Default

So, let me get this straight - the guy from whom you bought it, who spent $3k trying to get it to run in the shop, went to a shop where they didn't even check the gas or oil being okay, and just threw $3k worth of parts and labor on it?

Jeez.
Reply
Old Jul 31, 2015 | 06:40 PM
  #53  
TLS_Addict's Avatar
TLS_Addict
Thread Starter
Team Owner
 
Joined: Oct 2007
Posts: 26,745
Likes: 694
From: PA
Default

Paperwork shows a new fuel pump and its one of those cheap Airtex fuel pump. The screen was clogged. The FPR was junk too.

Going to put the pump in tonight.
Reply
Old Jul 31, 2015 | 10:56 PM
  #54  
TLS_Addict's Avatar
TLS_Addict
Thread Starter
Team Owner
 
Joined: Oct 2007
Posts: 26,745
Likes: 694
From: PA
Default

New fuel pump is in. Primes to 40 psi and holds at 36 and then it drops and drops fast. In 10 minutes its down to zero. I plugged of the FPR and it still dropped. I pinched the fuel return line and pressure shot up to 60+psi and held but still dropped slowly.

I flushed about a gallon of fuel thru the system and out the shrader valve. It was still so dark yellow that I couldn't see the bottom of the white cup I was using.

How much gas could be in the system??? I completely drained the tank and added about 3.5 gallons of fresh gas.

I pulled the injectors. They all read 14.7 to 14.8 ohms. Issue is, I can see orange debrit inside the top of the injectors. I am.betting one or more of them is stuck open.

The car tries and tries to start and sometimes does but soon dies. The engine sounds strong at idle and smooth but like I said it dies. When cranking I have 45-ish psi of fuel pressure so I think we are good with the pump.

What should I do next? Should I even bother to clean them myself?
Reply
Old Aug 1, 2015 | 09:29 AM
  #55  
antfarmer2's Avatar
antfarmer2
Race Director
 
Joined: Mar 2015
Posts: 15,926
Likes: 579
Default

Is it running a bit longer each time? Did you dose it up good with lucas? I would change the filter again try it the easy way this time. But would run some more gas through it first. Is the pressure dropping when it dies? If so have you tryed jumping the oil pressue switch yet?

Last edited by antfarmer2; Aug 1, 2015 at 09:39 AM.
Reply
Old Aug 1, 2015 | 09:53 AM
  #56  
antfarmer2's Avatar
antfarmer2
Race Director
 
Joined: Mar 2015
Posts: 15,926
Likes: 579
Default

Pull and clean all of your fuses by the door and the battery. Egr could be sticking or a vaccume line could be leaking
Reply
Old Aug 1, 2015 | 10:09 AM
  #57  
antfarmer2's Avatar
antfarmer2
Race Director
 
Joined: Mar 2015
Posts: 15,926
Likes: 579
Default

I just read someone put a block of wood on the injectors and taped them a dozen times to free them up
Reply

Get notified of new replies

To 1992 starting issues

Old Aug 1, 2015 | 10:44 AM
  #58  
TLS_Addict's Avatar
TLS_Addict
Thread Starter
Team Owner
 
Joined: Oct 2007
Posts: 26,745
Likes: 694
From: PA
Default

It ran a bit longer and now will actually fire a few times in its own. The oil pressure when it starts is up to 60 psi and is at about 35-40 as its trying to start. I put a few ounces of Lucas in it to assist with cleaning everything out. I am going to make myself a home made fuel injector cleanung system and see if it helps.

Also, still has the C12 code so that's good. Lol I will tinker a little more today.
Reply
Old Aug 1, 2015 | 10:45 AM
  #59  
TLS_Addict's Avatar
TLS_Addict
Thread Starter
Team Owner
 
Joined: Oct 2007
Posts: 26,745
Likes: 694
From: PA
Default

I don't get the block of wood thing.
Reply
Old Aug 1, 2015 | 10:51 AM
  #60  
antfarmer2's Avatar
antfarmer2
Race Director
 
Joined: Mar 2015
Posts: 15,926
Likes: 579
Default

Originally Posted by TLS_Addict
It ran a bit longer and now will actually fire a few times in its own. The oil pressure when it starts is up to 60 psi and is at about 35-40 as its trying to start. I put a few ounces of Lucas in it to assist with cleaning everything out. I am going to make myself a home made fuel injector cleanung system and see if it helps.

Also, still has the C12 code so that's good. Lol I will tinker a little more today.
Great sounds like it's freeing up I would just tap the injectors and keep starting let the lucas do it's work. I would not start pulling things apart just yet. Look at all your vacumme lines and clean fuses. Tap the egr too.
Reply



All times are GMT -4. The time now is 06:37 AM.

story-0
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-1
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-2
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-3
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
story-4
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-5
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-6
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-7
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-8
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-9
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