sputtering

96'riv sc its sputtering real bad when i put my foot into it im loosing alot of power and its aggrivating me any help plz...

need some more details please. i'll go ahead and assume it's a supercharged motor.
Sounds like an ignition component has failed. how new are the plugs and wires?
are you getting a code? (SES light) do you have the ability to get it scanned?
can you describe what the car is doing better? does it do it at idle, or only past XX RPM? does it do it in neutral and in drive?
Are all the vac lines in good shape?
sorry to answer your question with a bunch more questions, but this is all pertinent info when trying to diagnose something over the internet.
Matthew

Check Engine Light?

it does it accelerating at any above 1.5k rmp and its only if i put it to the floor im not getting the power i want and the lines are good no ses light. plugs are fairly new and wires arent to new. doesnt do it in idle only when excel.. with foot down.. in 2 3 and drive.. i have 2.25 thrush exuast duals on back end im just wondering could it be to much restriction or bad fuel inj. bad plugs or wires or any other reason you all could think of..

Thanks

and yes supercharged!!

Unless you have already done so you could replace the fuel filter. Cheap and easy to do.

Bert

could be bad plugs or wire or coil pack or not enough fuel (dirty fuel filter or injectors)
I would start with the cheapest and work up. A set of autolite 104 copper plugs work well and cost about $12. that will rule them out. how new are the wires and what brand are they. if they are almost anything other than acdelo trade them for a new set of the delco's ($34).
It's good maintenance if anything to put in a new fuel filter ($15).
You are using premium gas and have a clean air filter right?

It could be a lot of things. You need to be very specific about the conditions when it happens. You haven't told us what year your car is, which can be a factor. Is the check engine light on? Another clue. Your mufflers are probably not a restriction unless something is very wrong with them. Did this start just after installing the mufflers?

Please don't make us guess, and please use full english. Txt-spk is very hard to get a point across clearly and efficiently. Your computer has a full keyboard, please use it. This is not a chat room.

It could be a lot of things, and without more information there's very little we can do but guess.

deekster_caddy wrote:

It could be a lot of things. You need to be very specific about the conditions when it happens. You haven't told us what year your car is, which can be a factor. Is the check engine light on? Another clue. Your mufflers are probably not a restriction unless something is very wrong with them. Did this start just after installing the mufflers?

Please don't make us guess, and please use full english. Txt-spk is very hard to get a point across clearly and efficiently. Your computer has a full keyboard, please use it. This is not a chat room.

It could be a lot of things, and without more information there's very little we can do but guess.

I understand what you are trying to say, but go easy on new guys. He did tell us what year the car was. Also, he did mentioned the CEL was not on.(Granted, after it was asked)



Matthew

I agree with the above. If you've seen this problem first hand, there's enough info in the first post to make a diagnosis.

Mr.Riviera wrote:

deekster_caddy wrote:

It could be a lot of things. You need to be very specific about the conditions when it happens. You haven't told us what year your car is, which can be a factor. Is the check engine light on? Another clue. Your mufflers are probably not a restriction unless something is very wrong with them. Did this start just after installing the mufflers?

Please don't make us guess, and please use full english. Txt-spk is very hard to get a point across clearly and efficiently. Your computer has a full keyboard, please use it. This is not a chat room.

It could be a lot of things, and without more information there's very little we can do but guess.

I understand what you are trying to say, but go easy on new guys. He did tell us what year the car was. Also, he did mentioned the CEL was not on.(Granted, after it was asked)



Matthew

Sorry, I was rushing through the thread and found his description very hard to understand. I missed the year in the first post.

I do not want to be the grammar police, but text-speak drives me nuts, especially in a car forum where it is beneficial to all to be descriptive, clear and understandable. If you are telling me this in a text message, and brevity is required, that's different.

To the OP - I apologize for criticizing your description. Obviously it was good enough.

hey sorry bout that.. its a 96' supercharged buick riviera and it is sputtering, it does it accelerating at any rpm above 1500 and its only if i put it to the floor im not getting the power i want and the lines are good no ses light. plugs are fairly new and wires arent to new. doesnt do it in idle only when excel.. with foot down.. in 2 3 and drive... sorry for the txt type but i understand thanks for the curtesy notice im new mann.. but thanks all for the help. and again sorry. if i can find anything else for more detailed explaination i will post

and no the exahust had nothing to do with the sputtering it was doing it before i installed it

Get the recommended plugs and wires in the car.
Uses ACDELCO Part # 746R for the wires and Autolite 104 copper plugs. Get them at the local auto parts store. You can also get the wires for a good price from rockauto

Change them out and let us know if the problem is still there.
You should probably get a new fuel filter in the car too if you dont know when it was changed last. It probably is not the problem, but would be good to rule it out.

Kyle, it's the ignition wires. Even if they don't look bad, there are small cracks that you can't see. It's confusing to diagnose because you'd think ignition wires would either work or they wouldn't, but our SC engines use a lower voltage spark for "unspirited" driving, and a hotter spark for when you push the engine into boost. This means you'll run fine until the engine requires hotter spark - then it's too much for the old wires, and... sputter.

Plugs are probably fine - doesn't matter if wires are bad.

OEM AC/Delco wires are good for another 100k miles. You need a set anyway, so might as well. Rockauto has good prices.

thank you guys ill post back when i get them changed out

Did the sputtering start with the recent spark plugs? I've had a cracked plug insulator before exhibiting the same as you describe. But the wires should be suspect as well. Replace the wires, and I recommend inspecting the plugs again while you have the wires off.