does any know of the fifth injector. it is located on the engine and the line to the throttle body is fuel not coolant. when does this one work. i know the older tuned port engines in the ta's had nione injectors eight for the engine and one for cold starts.

 

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The fifth throttle body injector fluid line not coolant on old tuned power muscle throttle carburetor turbocharger injector.

WTF ARE YOU TALKING ABOUT>>>?????

 

I keep mine in my pants...

 

LOL

I know exactly what he is talking about, for all of you non 3rd gen F body owners, those cars, well to be precise 1985 thru 1987 F body TPI cars, used a ninth injector in the intake to enrich the mixture on cold start up. Later on, 87 to 92, it was removed and the ecm was tuned to compensate on its own.

To answer your question, I don't know what it is, I would doubt it is that tho....

 

YUP... I know about those... just did an lt4 intake conversion on a 86 vette and had to remover the 9nth injector... I don't think we have a cold start injector on these cars.

 

what ever your smoking,sliping,sniffin,dipin.. i want some.. cuz you see some c00l **** man

 

look at the tb, the black line connected to it and trace it back to a solenoid ,and a fuel line comes from that to the rear of the car i will post pics soon at work right now

 

1. I couldn't see injecting fuel into the TB unless you wanted to blow up your S/C.
2. The injectors inject fuel directly into the combustion chamber so why would you need a 5th injector?

 

i dont really know what it is just asking if we had a cold start injector, or what it is ,i took the throttle body off to have it ported by bo white at www.portsculptor.com and he said thats what it looks like

 

I'm not sure if we have cold start injectors, or not. I know a lot of older cars have them though, and a lot of guys use them as a spare injector and use tuning software from Greddy/HKS, or other aftermarket tuners to control them seperately when extra fuel is needed. That however, is kind of a thing of the past since standalone EMS systems allow you to use such large aftermarket injectors, thus eliminating the need for extra injectors.

 

When I was lookin at it today when ya put it back on it looks like a vacuum hose going over to the fuel maybe to register signal by vacuum to add additional fuel at certain times. Looks odd for a vacuum hose since its made like a fuel line.

 

Your #2 is completely wrong. What you are refering to is called Direct Injection, which our cars do not have.

 

Sounds like a Where's Waldo puzzle. Find the fifth injector!

 

i think your thinking about the evap line...

 

There is such a system as an EIC.. or extra injector controller. It's good when overboosting but it is not an OEM system.

Look on Google for SDS EIC-2 if you are interested.

 

Bingo! (and the solenoid at the other end of the line is the purce control solenoid)
There is no Cold Start Injector in the LSJ (or any GM engine since the old TPI days)
HTH
Wop

 

Sorry, the new 2.0 turbo is direct injection. Our motors have Port FI.

 

I also know that some cars have coolant running through the TB in order to warm up quicker (so annoying, the VW guys used to bypass it to try and shave a couple degrees off the intake temps).

And yes, I'd also agre with the Evap line, no better way to get rid of fumes then to burn them!

 

The coolant line is to prevent the TB from locking up with ice in the winter..