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  • March 28, 2024, 08:09:17 AM

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Author Topic: TBI Upgrade Exhaust Air Injection Plug Issue  (Read 4272 times)

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Offline Beaverseagle

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TBI Upgrade Exhaust Air Injection Plug Issue
« on: August 23, 2016, 10:12:11 PM »
This is for the TBI Guys,

Hunting down vacuum leaks for my TBI upgrade. She's running very rich. I removed the air injection system from my exhaust manifold and plugged the holes. She starts but dies once warm. And won't start again.  Any clue what could be going on? She started and ran before but bogged at WOT because if the bad mixture.

Thanks!
82 SX4 258 w/ 2 inch lift 235 tires and TBI kit.

Offline amcfool1

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Re: TBI Upgrade Exhaust Air Injection Plug Issue
« Reply #1 on: August 23, 2016, 11:33:18 PM »
hi, I don't have TBI, but isn't it supposed to self adjust the mixture via inputs from sensors, mainly the O2 sensor? Is your oxygen sensor hooked up and working? good luck, gz

Offline Beaverseagle

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Re: TBI Upgrade Exhaust Air Injection Plug Issue
« Reply #2 on: August 24, 2016, 11:27:03 AM »
Yes the O2 sensor is hooked up and was working just fine.  I played with the timing but still nothing. I'm thinking I may need to adjust my IAC and TPS sensor if the mixture has change significantly.
82 SX4 258 w/ 2 inch lift 235 tires and TBI kit.

Offline mo.eagles

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Re: TBI Upgrade Exhaust Air Injection Plug Issue
« Reply #3 on: August 26, 2016, 07:40:30 PM »
Do you have a plugged cat ?
'85 wagon Limited   tilt wheel , cruise control
power seats ,windows and locks
rear window washer /wiper 
tach and gauge package
A/C
 '85 wagon   power windows and locks
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factory tow package
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Offline Beaverseagle

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Re: TBI Upgrade Exhaust Air Injection Plug Issue
« Reply #4 on: August 27, 2016, 10:58:49 AM »
I don't think so. She was running not great but she had plenty of exhaust coming out.
82 SX4 258 w/ 2 inch lift 235 tires and TBI kit.

Offline Beaverseagle

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Re: TBI Upgrade Exhaust Air Injection Plug Issue
« Reply #5 on: August 29, 2016, 07:13:32 PM »
Bingo. Dropped the cat. It was completely plugged. How was it even runnin? The emission system does more harm than good. It bipassed the exhaust system.  Thanks for the help!
82 SX4 258 w/ 2 inch lift 235 tires and TBI kit.

 

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