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Username Post: Starting a 350 TBI without wire harness        (Topic#357645)
Posts: 51

Loc: Upstate:The Real New York
Reg: 04-18-03
08-13-19 02:51 PM - Post#2773155    

I am scrapping a 93',the motor and trans are both
disconnected and ready to pull. A local wants to
buy the motor,maybe the whole truck,but needs to
hear it run. No tank,it fell off last fall.

I have a remote starter switch.
If I put a jumper from the battery to the coil should
it fire by squirting some gas past the throttle plates


Frequent Contributor
Posts: 2081

Loc: Lake George, NY
Reg: 11-11-15
08-13-19 04:11 PM - Post#2773163    
    In response to chnaus

it will with spark.

Posts: 211

Reg: 05-01-14
08-14-19 05:51 AM - Post#2773196    
    In response to chnaus

Probably not.

1. The TBI does not have carburetor bowls to hold fuel. It depends on a constant supply from the fuel pump.
2. You will need the signals from the ECM to get it to start TPS, MAP, etc.
3. You will need the signal from the fuel pump to the oil pressure sensor by the distributor.

There's probably some I forgot but it won't be simple.

Very Senior Member
Posts: 4489

Reg: 12-29-02
08-14-19 07:28 PM - Post#2773235    
    In response to chnaus

If the coil and ignition module are connected together then you should get spark by powering the coil. Once you have spark it would kind of run off fuel dumped down the throttle body.

Posts: 60

Age: 35
Loc: Upstate NY
Reg: 02-03-18
08-16-19 05:30 AM - Post#2773296    
    In response to chnaus

As said if you can power up the coil etc.. for spark but it needs a steady stream of fuel we test fire tbi motors at the shop often and use a 2 gallon mower tank with a 5/16 line fed into the butterfly it's crude but gets enough of a run time to hear it run wouldn't go for to long being high rev could hook an elec pump up and run it into the fuel line at rear of tbi to. As stated though without tps and that runs crappy

If it's to loud your to old

93 K1500 Z71 step side ext/cab 5.7 shorty headers and 3in true duals. 3in body lift and leveling kit.

89 K1500 4.3 rotted frame dubbed parts rig Sold

79 Oldsmobile omega 2dr coupe 307 4bbl

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