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09-20-2014, 03:18 PM
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#1 |
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Registered User
Join Date: Apr 2014
Location: LaFayette Ga.
Posts: 8
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have one that wont start
1997 4.3 vortex won't start, getting fire to all plugs and getting gas. turns over, will start up then die. New fuel pump, wires, plugs, Cap and rotor button.
Floods out and gas going into oil. Any ideals? |
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09-21-2014, 08:46 AM
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#2 |
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Registered User
Join Date: Jul 2004
Location: Houston, TX
Posts: 109
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Re: have one that wont start
Have you checked any of the sensors? Is the air filter clogged? Your tbi might be an issue. Good Luck, sorry I cannot be any more help.
__________________
2003 Chevrolet CCSB 4x4 1500HD Mine 2011 Toyota Corolla S Wife's new ride 2002 Pontiac Grand Am SE2 Wrecked/Totaled 2014 1990 Chevrolet 454SS GONE 02/26/11  1991 S10 SCSB GONE 12/24/08 1965 Chevrolet LB GONE 06/06/05 GM for life 
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09-21-2014, 01:55 PM
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#3 |
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Registered User
Join Date: Apr 2014
Location: LaFayette Ga.
Posts: 8
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Re: have one that wont start
New air filter, it has the CPI and its is a rebuilt one. Thanks for the reply.
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09-21-2014, 02:02 PM
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#4 | |
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Registered User
 
Join Date: Aug 2014
Location: Pittsburgh, PA
Posts: 627
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Re: have one that wont start
Quote:
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09-21-2014, 09:40 PM
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#5 |
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Registered User
Join Date: May 2004
Location: Minnesota
Posts: 4,621
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Re: have one that wont start
To me it sounds like a cracked fuel line under the plenum, or a ruptured fuel pressure regulator diaphram.
I would put a fuel pressure gauge on it and see if the pressure drops as soon as the pump gets done with the 2 second prime. A leak under the plenum will dump fuel right into the valley which will drain into the crankcase.
__________________
For those of you that are wondering why you are not getting replies to your thread: Did you give the model, year, engine, fuel system type, and transmission information? If it is modified from what came stock from the factory, let us know that too. |
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09-22-2014, 02:11 PM
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#6 |
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Registered User
Join Date: Apr 2014
Location: LaFayette Ga.
Posts: 8
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Re: have one that wont start
Thanks I will check it tonight and see.
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09-24-2014, 07:29 PM
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#7 |
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Registered User
Join Date: Apr 2014
Location: LaFayette Ga.
Posts: 8
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Re: have one that wont start
Checked the pressure on the pump on 2 second prime it stayed on 0.
Cranked engine over and it went to 58psi. Removed the plenum and no evidence of gas on the intake. Checked it again after turning the engine over still dry. |
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09-24-2014, 07:48 PM
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#8 |
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Registered User
Join Date: May 2004
Location: Minnesota
Posts: 4,621
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Re: have one that wont start
Something is wrong!
If it did not build up any pressure during the fuel pump prime, then it it could be leaking all that fuel into the engine through the CPI unit. Did you cycle the key and try running the pump a couple times in a row to see if it could build pressure?
__________________
For those of you that are wondering why you are not getting replies to your thread: Did you give the model, year, engine, fuel system type, and transmission information? If it is modified from what came stock from the factory, let us know that too. |
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