Have fire/won't start
Thread Starter
Intermediate
Joined: Feb 2011
Posts: 43
Likes: 1
From: bogalusa louisiana
Have fire/won't start
Wasn't getting fire to the Spark plugs.Getting fire to the plugs but won't start now.This is on a 1988 Corvette TPI engine i just installed in my 1966 Nova.When i try to start it,appears to try to run for about 1 sec them act like not getting fuel.After it does this Number 8 Header tube feels warmer than the rest.But as i said it just runs briefly.This is all new to me so i am at a loss and don't know where to turn.Hoping someone on this site can shed light on this problem.
Safety Car
Joined: Jan 2004
Posts: 3,556
Likes: 13
Have you had the tune on the chip modified to suit your retro fit TPI?
If not you need to get the fuel enable function (VATS ) on the tune changed so the injectors will spray fuel
Unlikely to have spark without a ECM
Last edited by vetteoz; Sep 2, 2013 at 07:17 PM.
Safety Car
Joined: Jan 2004
Posts: 3,556
Likes: 13
What it was previously in has little bearing on it now.
Assuming it was setup and running correctly in that car , you have something fundamentally wrong with your install.
No fuel ( you have checked that the pump is running and confirmed you have the correct fuel pressure at the engine 1st ????? )
= no injector pulse from the ECM so either a bad ICM in the dist not sending a signal to the ECM to pulse the injectors
See
http://www.thirdgen.org/techboard/po...560-post2.html
http://forums.corvetteforum.com/1562372000-post8.html
or
VATS (which disables the injectors ) is still enabled on the chip in the ECM and the previous owner had a external VATS input to satisfy
that requirement
read
http://www.thirdgen.org/vats_passkey_system
Assuming it was setup and running correctly in that car , you have something fundamentally wrong with your install.
No fuel ( you have checked that the pump is running and confirmed you have the correct fuel pressure at the engine 1st ????? )
= no injector pulse from the ECM so either a bad ICM in the dist not sending a signal to the ECM to pulse the injectors
See
http://www.thirdgen.org/techboard/po...560-post2.html
http://forums.corvetteforum.com/1562372000-post8.html
or
VATS (which disables the injectors ) is still enabled on the chip in the ECM and the previous owner had a external VATS input to satisfy
that requirement
read
http://www.thirdgen.org/vats_passkey_system
Last edited by vetteoz; Sep 2, 2013 at 09:59 PM.
Thread Starter
Intermediate
Joined: Feb 2011
Posts: 43
Likes: 1
From: bogalusa louisiana
This might sound like a stupid question,but here goes.When i hooked up the fuel line i ran the 3/8"supply line to the 3/8" line coming from the Fuel rail but shouldn't the fuel supply go through the Pressure Regulator before going through the fuel rails?
Safety Car
Joined: Jan 2004
Posts: 3,556
Likes: 13
The supply goes to fuel rail 1st ( to injectors ), then the regulator , then return line
The regulator holds the required pressure in the rail above the injectors.
if the other way around would have no pressure to the injectors as the fuel rails would be a open line back to the tank
Thread Starter
Intermediate
Joined: Feb 2011
Posts: 43
Likes: 1
From: bogalusa louisiana
Opposite to a carb fuel supply
The supply goes to fuel rail 1st ( to injectors ), then the regulator , then return line
The regulator holds the required pressure in the rail above the injectors.
if the other way around would have no pressure to the injectors as the fuel rails would be a open line back to the tank
The supply goes to fuel rail 1st ( to injectors ), then the regulator , then return line
The regulator holds the required pressure in the rail above the injectors.
if the other way around would have no pressure to the injectors as the fuel rails would be a open line back to the tank
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Thread Starter
Intermediate
Joined: Feb 2011
Posts: 43
Likes: 1
From: bogalusa louisiana
What it was previously in has little bearing on it now.
Assuming it was setup and running correctly in that car , you have something fundamentally wrong with your install.
No fuel ( you have checked that the pump is running and confirmed you have the correct fuel pressure at the engine 1st ????? )
= no injector pulse from the ECM so either a bad ICM in the dist not sending a signal to the ECM to pulse the injectors
See
http://www.thirdgen.org/techboard/po...560-post2.html
http://forums.corvetteforum.com/1562372000-post8.html
or
VATS (which disables the injectors ) is still enabled on the chip in the ECM and the previous owner had a external VATS input to satisfy
that requirement
read
http://www.thirdgen.org/vats_passkey_system
Assuming it was setup and running correctly in that car , you have something fundamentally wrong with your install.
No fuel ( you have checked that the pump is running and confirmed you have the correct fuel pressure at the engine 1st ????? )
= no injector pulse from the ECM so either a bad ICM in the dist not sending a signal to the ECM to pulse the injectors
See
http://www.thirdgen.org/techboard/po...560-post2.html
http://forums.corvetteforum.com/1562372000-post8.html
or
VATS (which disables the injectors ) is still enabled on the chip in the ECM and the previous owner had a external VATS input to satisfy
that requirement
read
http://www.thirdgen.org/vats_passkey_system
I do have another Distributor i can try.
I assume VATS was removed as it is not showing when testing for Codes.
Thread Starter
Intermediate
Joined: Feb 2011
Posts: 43
Likes: 1
From: bogalusa louisiana
I will get a Noid light ordered today.Will do the ICM signal test hopefully today.Again thanks,Mark
Thread Starter
Intermediate
Joined: Feb 2011
Posts: 43
Likes: 1
From: bogalusa louisiana
What it was previously in has little bearing on it now.
Assuming it was setup and running correctly in that car , you have something fundamentally wrong with your install.
No fuel ( you have checked that the pump is running and confirmed you have the correct fuel pressure at the engine 1st ????? )
= no injector pulse from the ECM so either a bad ICM in the dist not sending a signal to the ECM to pulse the injectors
See
http://www.thirdgen.org/techboard/po...560-post2.html
http://forums.corvetteforum.com/1562372000-post8.html
or
VATS (which disables the injectors ) is still enabled on the chip in the ECM and the previous owner had a external VATS input to satisfy
that requirement
read
http://www.thirdgen.org/vats_passkey_system
Assuming it was setup and running correctly in that car , you have something fundamentally wrong with your install.
No fuel ( you have checked that the pump is running and confirmed you have the correct fuel pressure at the engine 1st ????? )
= no injector pulse from the ECM so either a bad ICM in the dist not sending a signal to the ECM to pulse the injectors
See
http://www.thirdgen.org/techboard/po...560-post2.html
http://forums.corvetteforum.com/1562372000-post8.html
or
VATS (which disables the injectors ) is still enabled on the chip in the ECM and the previous owner had a external VATS input to satisfy
that requirement
read
http://www.thirdgen.org/vats_passkey_system