TB injection
Thread Starter
Burning Brakes
Joined: Sep 2010
Posts: 799
Likes: 26
From: Lexington Park Maryland
TB injection
So I am about to help another club member with his 82 anniversary edition. From our conversation, it's been sitting for sometime now.
I've never worked on dual TD injection, I have played with TB on my late 80's suburban. From what he is telling me, fuel is just pouring out of the injectors. Even the new ones he just installed.
The one thing that comes to mind is: they are pouring fuel because they are being signal as if it is WOT. Any suggestions where to start looking. Thank you.
I've never worked on dual TD injection, I have played with TB on my late 80's suburban. From what he is telling me, fuel is just pouring out of the injectors. Even the new ones he just installed.
The one thing that comes to mind is: they are pouring fuel because they are being signal as if it is WOT. Any suggestions where to start looking. Thank you.
Tech Contributor
Joined: Jun 2004
Posts: 20,953
Likes: 962
From: I tend to be leery of any guy who doesn't own a chainsaw or a handgun.
We could use a bit more info. Does the fuel pour out only when the engine is running, or only when the injectors are connected to the harness with the key on, or just anytime there's fuel pressure?
Thread Starter
Burning Brakes
Joined: Sep 2010
Posts: 799
Likes: 26
From: Lexington Park Maryland
My apologies, I have not actually seen the car so I am only going by our conversation. I am going to verify and will post back. thank you.
Safety Car
Joined: Feb 2016
Posts: 4,486
Likes: 1,410
From: SC
We make TB injectors, I can test them for you. However, it sounds like they are incorrectly installed or have torn o-rings. It's an easy mistake to make. We sent some TB injectors to GM service for them to test. The o-rings were in a separate little plastic bag in the box with the injectors. GM service reported back that the injectors leaked and hydraulic-ed the engine. They never put the o-rings on the injectors! If they can do it anybody can.
Le Mans Master
Joined: Jul 2000
Posts: 6,664
Likes: 162
From: columbia city in
there is a front and a back injector,they are differant.If the plugs are carboned up and the injectors are dumping fuel ,I would check the front coolant sensor.your tps on the side on the tb should also be checked .these are just ideas to start with.
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