Help! New injectors...AHHH!! raw fuel out the pipes! take cover!

[LT4man]

i put the stock injectors back in and it cleared up the starting issue and helped the idle a lot i believe i had a vaccum leak around one of the injectors it wasnt sealed correctly in my intake but i went ahead and put the stock ones back in...anybody know what else could cause a rough idle?

ANY type or size of vacuum leak will affect idle quality. If you have cruise control, any leak in the vacuum system controlling the cruise will affect the idle. A leak in the vacuum reservoir (which is nestled in front of the driver's side front wheel) will affect idle quality.

One or more fuel injectors not operating like the others can affect the idle quality.

Check all the vacuum hoses in the engine compartment. Make sure the plastic check valve under the passenger side fuel rail cover is intact and not leaking.

Any vacuum leak in the intake manifold will affect idle quality.

AFTER CHECKING FOR VACUUM LEAKS, DON'T FORGET TO SAVE THE !

 

[Curious George]

MAP = Manifold (Intake) Air Pressure = Speed Density = Vacuum drop or increase determines amount of fuel to add to engine

MAF = Manifold (Intake) Air Flow = Temperature of heated electrical wire is used to determine amount of air flowing into Intake Manifold / Then amount of fuel to add is determined according to amount of air flow

WHILE TEST DRIVING YOUR VETTE, BE SURE TO SAVE THE !

Actually, the above terms are misnomers... the true technical terms are:
MAP = Manifold Absolute Pressure


MAF = Mass Air Flow

I know I am splitting hairs here, but let's keep the technical jargon correct. In the long run everybody will benefit.

CG

 

[Towu4free]

well guys took her out tonight and put a total of 104 miles on it, when i pulled in to advance auto, and swung it in a parking spot it seemed to act a little funny when it stopped...my guess was it was still getting used to everthing (only had 30 miles on it) or being the fuel was at 3 bars maybe it starved it for a split second, but after the other 70 some miles i put on her tonight i never had another problem and i ran it easy and ran it hard and everywhere in between, i replaced one of the vaccum lines going to the cruise control it was very dry rotted, i may take the Idle air control valve out tomorrow and clean it, at this point i think id like a C5:confused anyway i hope it is back to 100% i cant stand it when my vette is down, any of you wanna come by and take a look or do some diagnosing? ill treat ya to lunch/dinner and if you need any paint or body work done my dad and i could hook ya up! lol he owns his own business and i now am working for him. thanks guys have a good one

P.S if you ever see another vette on the side of the road broke down or what have you..dont stop and help lol then wave goodbye :L

 

[Schrade]

the car still hauls A**

Every motor runs like scalded aardvarks, raped giraffes, etc, ... even with a ton of tune problems, since default for most problems is max fuel. They'll usually start right up too, again, since fuel is maxed.

Closed loop warm idle tells all.

Still think you need a data scan...

Well, only thing I can think of is head for a speed shop, get a scan/data log done for idle and for a drive with a shift cycle and 15 minutes cruise, and go from there.

You can do it yourself with a hardwire interface for your laptop-to-ALDL, and some free software downloadable from the web. That's always good info anyway - let's you see potential problems, BEFORE they're a problem...
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[LT4man]

Actually, the above terms are misnomers... the true technical terms are:
MAP = Manifold Absolute Pressure


MAF = Mass Air Flow

I know I am splitting hairs here, but let's keep the technical jargon correct. In the long run everybody will benefit.

CG

:bash

Thanks for correcting me. At one time, I knew the proper terms. Just have too many things on my mind right now. Working on these darn vehicles for almost forty (40) years will do that!

Even when I was typing the words, they did not seem quite right to me.

I did want to explain that these two (2) sensors measure air going into the Intake Manifold, but in two (2) very different ways.

I wonder how many folks out here actually know HOW a Mass Air Flow sensor operates. Actually, a trick question. That is what is so good about this site. One can learn many different things just by surfing these pages!

AFTER SURFING THIS SITE, BE SURE TO SAVE THE !