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Old 05-10-2012, 01:42 PM
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tbi 350 dumping too much fuel

i put a 92 tbi 350 in a 89 jeep wrangler run good when i first drove it but now its dumpimg too much gas it wont idle right it loads up and #8 plug is wet with gass all sensors check good put new fpr on it and also out a new temp sensor on it the only thing i have not replaced is the injectors any advicewould help ive only been running the motor harness i dont have the vehicle harness but it ran fine before

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Old 05-10-2012, 06:20 PM
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The fuel pressure too high? you have the jeep pump, in tank, for the multi point injection ...right.
I agree the FPR should only keep the pressure at the required 12-13 lbs for the tbi, regardless of the pumps capabilitys. Maybe the return line is blockked or pinched? that would shoot the fuel pressure up a lot.
If an injector was leaking on a TBI you would have 4 cylinders getting to much fuel
Have you checked the Fuel Pressure?
have you looked at ALL the plugs?
Fact is stranger than Fiction
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Old 05-31-2012, 11:27 PM
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my experiance is that it could be maf sensor either wrong vacume or its bad,also temp sending unit. both not to spendy to replace,
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