Generation III External Engine LS1 | LS6 | Bolt-Ons | Intakes | Exhaust | Ignition | Accessories
Sponsored by:
Sponsored by:

HELP ! car wont start after ls6 intake

Thread Tools
 
Search this Thread
 
Old Jul 6, 2007 | 02:09 PM
  #1  
Mohammed's Avatar
Thread Starter
TECH Regular
 
Joined: Mar 2005
Posts: 426
Likes: 0
From: saudi arabia
Exclamation HELP ! car wont start after ls6 intake

after 6 hours of pain,scratches and wounds I installed the ls6 intake, now the car won't start , I start it up and it dies it doesnt start no matter what.

I broke that ugly thing behind the intake and I'm not sure if the car doesn't start because of it !! and I don't know what the hell is it

next time I would waste a lot of money than wasting time and breaking things !

check attached photo
Attached Thumbnails HELP ! car wont start after ls6 intake-whatsthis1.jpg  

Last edited by the_beast; Jul 6, 2007 at 02:36 PM.
Reply
Old Jul 6, 2007 | 02:28 PM
  #2  
lastcall190's Avatar
TECH Addict
iTrader: (36)
 
Joined: May 2004
Posts: 2,656
Likes: 4
From: NJ
Default

Make sure brake booster line is firmly reattached. I made the same mistake with same results. Good luck.

-J
Reply
Old Jul 6, 2007 | 02:35 PM
  #3  
Mohammed's Avatar
Thread Starter
TECH Regular
 
Joined: Mar 2005
Posts: 426
Likes: 0
From: saudi arabia
Default

Originally Posted by lastcall190
Make sure brake booster line is firmly reattached. I made the same mistake with same results. Good luck.

-J
I don't know what line !

see attached pic, was it the same thing ?
Reply
Old Jul 6, 2007 | 02:40 PM
  #4  
HavATampa's Avatar
TECH Addict
iTrader: (49)
 
Joined: Aug 2003
Posts: 2,128
Likes: 1
From: Louisiana
Default

You broke the oil sending unit. Common thing to break on a manifold swap. The line lastcall is referring to goes from the back of the manifold to the brake booster on the firewall. Massive vacuum leak if you left is disconnected. Here it is:

Reply
Old Jul 6, 2007 | 02:41 PM
  #5  
lastcall190's Avatar
TECH Addict
iTrader: (36)
 
Joined: May 2004
Posts: 2,656
Likes: 4
From: NJ
Default

That's the oil pressure sensor, you should replace that anyway since it's broken. The brake booster line goes near the brake master cylinder, and also into the back of the intake. Mine would start up, go put put....... dead.

EDIT: Tampa beat me to it, nice pic.

-J
Reply
Old Jul 6, 2007 | 02:44 PM
  #6  
HavATampa's Avatar
TECH Addict
iTrader: (49)
 
Joined: Aug 2003
Posts: 2,128
Likes: 1
From: Louisiana
Default

heh...just a couple of threads down somebody else has the same problem. The part numbers for the replacement part is posted in there too.

https://ls1tech.com/forums/generation-iii-external-engine/744250-engine-sensor.html
Reply
Old Jul 6, 2007 | 02:56 PM
  #7  
Mohammed's Avatar
Thread Starter
TECH Regular
 
Joined: Mar 2005
Posts: 426
Likes: 0
From: saudi arabia
Default

Originally Posted by HavATampa
You broke the oil sending unit. Common thing to break on a manifold swap. The line lastcall is referring to goes from the back of the manifold to the brake booster on the firewall. Massive vacuum leak if you left is disconnected. Here it is:


thanks for the pic bro, I'm gonna check it out.
Reply
Old Jul 6, 2007 | 10:03 PM
  #8  
mnypitZ's Avatar
TECH Apprentice
iTrader: (19)
 
Joined: May 2007
Posts: 371
Likes: 0
From: Deland, FL
Default

Looks like the oil pressure sender, but I am not sure that will cause it not to run. Mine was allready broken when we pulled my intake and it was running fine before.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Jul 6, 2007 | 10:36 PM
  #9  
'99bluez's Avatar
12 Second Club
iTrader: (6)
 
Joined: Mar 2007
Posts: 285
Likes: 0
From: Chicago
Default

Originally Posted by mnypitZ
Looks like the oil pressure sender, but I am not sure that will cause it not to run. Mine was allready broken when we pulled my intake and it was running fine before.
yep, it will definately run fine with it broken. Busted mine on my LS6 install - I started the car and the gauge was pinned to the right Scared me until i learned it was only a dumb sensor.
Reply
Old Jul 6, 2007 | 10:45 PM
  #10  
vaticano's Avatar
TECH Enthusiast
15 Year Member
iTrader: (8)
 
Joined: Feb 2006
Posts: 524
Likes: 0
From: Denver Colo.
Default

i only say it because i did it but check the maf plug i put mine in upside down doh and it would'nt run
Reply
Old Jul 7, 2007 | 04:45 AM
  #11  
Mohammed's Avatar
Thread Starter
TECH Regular
 
Joined: Mar 2005
Posts: 426
Likes: 0
From: saudi arabia
Default

Originally Posted by vaticano
i only say it because i did it but check the maf plug i put mine in upside down doh and it would'nt run
I have to wait and check everything out next wednesday, I work five days away from home
Reply
Old Jul 7, 2007 | 04:39 PM
  #12  
98Camarod's Avatar
11 Second Club
iTrader: (43)
 
Joined: Aug 2006
Posts: 5,364
Likes: 2
From: Summerville, SC
Default

I forgot to reattach the brake booster line and it ran and idled nice, but once you gave it gas it freaked out and shut off. Make sure the pcv system is hooked back up too. There is a line that goes to the front of the intake. Do you have your map sensor plugged in?
Reply
Old Jul 7, 2007 | 11:13 PM
  #13  
Mohammed's Avatar
Thread Starter
TECH Regular
 
Joined: Mar 2005
Posts: 426
Likes: 0
From: saudi arabia
Default

Originally Posted by 98Camarod
. Do you have your map sensor plugged in?
I'm not sure about anything , have to wait 3 more days to get back home
Reply
Old Jul 12, 2007 | 05:05 AM
  #14  
Mohammed's Avatar
Thread Starter
TECH Regular
 
Joined: Mar 2005
Posts: 426
Likes: 0
From: saudi arabia
Default

Problem solved, I started the car yesterday and it seems fine

thanks to ls1howto

I just did what this pic says

Reply
Old Jul 12, 2007 | 12:09 PM
  #15  
Camaro Rick's Avatar
Launching!
iTrader: (2)
 
Joined: Apr 2006
Posts: 298
Likes: 0
From: Manchester, N.H
Default

Ohhh totally man. If you didn't torque down the manifold in the correct sequence you'd get just enough of a vacuum leak to cause your problem. Good call on whosever part it was that called the call of torquing in correct numerical procedure.
Reply




All times are GMT -5. The time now is 03:49 AM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE