Need More Help ASAP
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Junior Member
Joined: Aug 2005
Posts: 65
Likes: 0
From: Texas
Car: 1987 IROC
Engine: 305 Tpi
Transmission: 700r4 With B&M Rebuild Kit & 2800 S
Need More Help ASAP
ok replaced fuel pump and pfr still wont start motor is flooded pull plugs turned over motor to get fuel out put used set of plugs still no start if i unplug the injectors it fires off but wont run plug them back in and nothing happens unplug again and fires off going to replace the temp coolant senor and O2 sensor next what do i need to look for or do HELP
Supreme Member
iTrader: (2)
Joined: Sep 2009
Posts: 1,591
Likes: 5
From: WI.
Car: 1987 iroc
Engine: 383 TPIS intake, Dyno Don headers
Transmission: 700R4 w/Pro-built Auto/transgo 2-3
Axle/Gears: 3.27/3.70 borg warner 9 bolt
Re: Need More Help ASAP
Sounds like a leaky injector or O-ring. Have you checked the fuel pressure? I think a 305 tpi should be 39lb's on the rail for 19lb injectors. Also you can ohm out the injectors to find a bad one.
Supreme Member
iTrader: (3)
Joined: Nov 2001
Posts: 2,428
Likes: 2
From: Fairview Heights Illinois
Car: 1986 Irocz
Engine: 305 TPI
Transmission: 700R4
Axle/Gears: 3.25:1
Re: Need More Help ASAP
ok replaced fuel pump and pfr still wont start motor is flooded pull plugs turned over motor to get fuel out put used set of plugs still no start if i unplug the injectors it fires off but wont run plug them back in and nothing happens unplug again and fires off going to replace the temp coolant senor and O2 sensor next what do i need to look for or do HELP
The coolant temp sensor is definitely used for cranking. You can easily test it with an ALDL scanner or manually with a DVOM.
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