i am swapping my 305 tbi for a 350 with the same tbi.... well i got everything hooked up today and turned her over, my tbi is spraying sooooo much gas,,, what could cause it to do this? i mean it sprayes enough to nearly fill up the barrels or whatever you call them... please help me out i need to know ...thanx guys

 

Are you sure its the injectors that are spraying that much fuel? It could be a blown out fuel pressure regulator gskt. The regulator is directly behind the injectors look and see if that is where your fuel is coming from.

 

thats not where its coming from, you can see it spraying out in a cone shap straight down just like it is supposed to....just too ,much...p.s. thanx for replying.. i posted this in 3 places and dont ya love how people conveniently ignore some of your posts?

 

Are both overspraying? I would get an ohm meter and measure resistance. If one is shorted more voltage will be drawn from the good injector thereby causing a rich condition. If I recall the correct resistance is between 12-16 ohms.

Also make sure you do not have the wrong vaccum line on the FPR.

BILL

 

Ok that shot my idea full of holes! Other ideas:skewed coolant temp sensor,map sensor or throttle position sensor? Do you know what the fuel pressure is? Maybe a bad fuel press regulator? Does the engine start up ok and gets worse as it runs? Is the service engine soon light on?

 

The stock setting is approximately 42 PSI.

 

If this is a factory throttle body setup it should only have 9-13 lbs of fuel pressure. You haven't switched fuel pumps on this thing have you?

 

Sorry. I looked up the TPI spec.

 

im having the same prob. when i start my car its spraying way too much gas. and im throwing a code that said low temp at the coolant temp sensor. but my cars stays at 220. it also said something about the map sensor please help me to if you can

 

The temp sending unit for the dash is seperate from the one for the computer. The one for the dash is located in the drivers side cylinder head(I think) the one for the computer is located next to the thermostat housing. It should be a 2 wire connector either brown and yellow or green and yellow. That is the one that you need to be concerned with. Check the wiring to it if it looks ok then I would suspect you have a bad temp sensor. Fix that problem first before starting on the map sensor. If an engine is running ratty enough it sometimes will set a map sensor code. Good Luck!