Does this sound like an injector problem? - TriStateTuners.com :: Home of Tristate Auto Enthusiast

Mr2.0T Alerion · 04-03-2007, 01:15 PM

my daily driver is a mr2T 3s-gte. Starts up and drives clean but lately when I hit the gas harder the car kinda sputters and sometimes jerks back and forth during heavier accelleration ( usually when my turbo is spooling ). Im thinking I have some dirt in my injectors but im wondering what else it could be. The jerking seems like the car stops accelleration then starts again for a breif moment.

Any ideas would be great since my mech is booked all week.

Tiny · 04-03-2007, 01:54 PM

Quote:

Originally Posted by Mr2.0T Alerion

my daily driver is a mr2T 3s-gte. Starts up and drives clean but lately when I hit the gas harder the car kinda sputters and sometimes jerks back and forth during heavier accelleration ( usually when my turbo is spooling ). Im thinking I have some dirt in my injectors but im wondering what else it could be. The jerking seems like the car stops accelleration then starts again for a breif moment.

Any ideas would be great since my mech is booked all week.

I would check plugs and wires first. Could be spark blowout. Put a new set of plugs in and gap them a little tighter and see if that works. For a few bucks you can at least rule that out.

**TROLL** · 04-03-2007, 02:01 PM

what he said.
if that doesnt make an improvement then look at your engine management. hopefully you're tuned for your injectors/turbo, but even so maybe you're knocking / pulling timing bad when you get on the throttle for one reason or another.

Renegade_ · 04-03-2007, 02:05 PM

To the best of my knowledge the 3S-GTE is a turbo motor, so I doubt engine management would be the case. How much boost are you running?

Mr2.0T Alerion · 04-03-2007, 05:43 PM

Im running stock 7lbs boost. The problem always seems to happen when I spool my turbo hard like from pulling out onto a highway or other times of quick acceleration. I just ran in some injector cleaners. Im due for my 75k tune up this week they'll change the plus and all then.

Car has stock internals and tuning.

**TROLL** · 04-03-2007, 05:45 PM

renegade... turbo cars can have bad tunes too

Mr2.0... does the car have stock turbo, injectors, etc? what mods are done to it? my thought is still that the mods/tune could be a possible issue.

freebmx444 · 04-03-2007, 06:01 PM

boost leak?

wgknestrick · 04-03-2007, 06:16 PM

Can you verify boost psi with a gage? Don't just assume that you are running 7psi without a gage. Does this happen at part throttle (if so could be improperly adjusted BOV)?

You could also be over boosting and hitting fuel cut as this would only happen in the instances you describe. It certainly sounds like a boost control - related problem to me because if it was related to the ignition or fuel system, you would also experience this problem high in the RPM band during highway pulls.

You put a much bigger load on the car in higher gears and thus much higher loads on your fuel and ignition systems. If my car ever miss-fires, it's in this region, not boost build up.

Tiny · 04-03-2007, 08:56 PM

Spark plugs and wires

Mr2.0T Alerion · 04-03-2007, 08:58 PM

Stock PSI is 7. i thought about the fuel cut off issue but that only comes past 11 or 12 psi from what I hear. Everything in the car is stock. I'll look into a boost leak and such if the tune up doesn't do the trick.

Tiny · 04-03-2007, 09:06 PM

Quote:

Originally Posted by Mr2.0T Alerion

Stock PSI is 7. i thought about the fuel cut off issue but that only comes past 11 or 12 psi from what I hear. Everything in the car is stock. I'll look into a boost leak and such if the tune up doesn't do the trick.

Boost leak usually doesn't make the car hesitate too bad under accell. Could be a knock, but usually the knock sensor would throw CEL's.

Plugs and wires.

ScubaSteve · 04-03-2007, 09:19 PM

Atleast pull the plugs and take a look at them. Its not a bad time to change them and maybe pick up some new wires, cap, and rotor while your at it.

wgknestrick · 04-04-2007, 12:05 PM

Quote:

Originally Posted by Mr2.0T Alerion

Stock PSI is 7. i thought about the fuel cut off issue but that only comes past 11 or 12 psi from what I hear. Everything in the car is stock. I'll look into a boost leak and such if the tune up doesn't do the trick.

Verify your PSI. You cannot assume that it is still running stock PSI at this age and unknown history of your car. You could very easily be hitting fuel cut. I will garantee you that it is not a boost leak.

Vr-4-Life · 04-04-2007, 02:00 PM

Jon.. why not just ask your brother... it could be spark blowout like everyone is saying.. try getting some ngk copper plugs and ill gap them down and install them for you.. and get copper.. dont let them talk u into platinum or anything

77F-150 · 04-04-2007, 03:39 PM

did you start to have the problem when it was raining outside

04-03-2007, 01:15 PM	#1
Mr2.0T Alerion Noob-Jersey Join Date: Nov 2006 Member #3013 My Ride: 92 Mr2 Turbo iTrader: (0)	Does this sound like an injector problem? my daily driver is a mr2T 3s-gte. Starts up and drives clean but lately when I hit the gas harder the car kinda sputters and sometimes jerks back and forth during heavier accelleration ( usually when my turbo is spooling ). Im thinking I have some dirt in my injectors but im wondering what else it could be. The jerking seems like the car stops accelleration then starts again for a breif moment. Any ideas would be great since my mech is booked all week.

04-03-2007, 02:05 PM	#4
Renegade_ Tri-State Post Whore Join Date: May 2006 Location: NNJ/NYC Member #1912 My Ride: 1J Swaggon iTrader: (2)	To the best of my knowledge the 3S-GTE is a turbo motor, so I doubt engine management would be the case. How much boost are you running? __________________ To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures.

04-03-2007, 06:01 PM	#7
freebmx444 Tri-State Addict Join Date: May 2006 Member #1929 iTrader: (1)	boost leak? __________________ i work at an infiniti dealership

04-03-2007, 08:56 PM	#9
Tiny Tri-State Addict Join Date: May 2005 Location: Philly Member #469 iTrader: (0)	Spark plugs and wires __________________ Charger SRT8(mine) --- Diablo Tune, T-Stat, SLP exhaust, and custom intake. Slower then a cavalier, but i'm working on it. Infinity G35 Coupe(Hers) --- Stock Touring Edition With Mad JDMZZZZ

04-03-2007, 09:19 PM	#12
ScubaSteve Tri-State Addict Join Date: Sep 2006 Location: Montgomery County Member #2599 My Ride: 1993 s13 coupe Ka-t; 2005 Legacy GT Ltd iTrader: (1)	Atleast pull the plugs and take a look at them. Its not a bad time to change them and maybe pick up some new wires, cap, and rotor while your at it. __________________ TempleTuners To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures. To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures.

04-03-2007, 05:43 PM	#5
Mr2.0T Alerion Noob-Jersey Join Date: Nov 2006 Member #3013 My Ride: 92 Mr2 Turbo iTrader: (0)	Im running stock 7lbs boost. The problem always seems to happen when I spool my turbo hard like from pulling out onto a highway or other times of quick acceleration. I just ran in some injector cleaners. Im due for my 75k tune up this week they'll change the plus and all then. Car has stock internals and tuning.

04-03-2007, 08:58 PM	#10
Mr2.0T Alerion Noob-Jersey Join Date: Nov 2006 Member #3013 My Ride: 92 Mr2 Turbo iTrader: (0)	Stock PSI is 7. i thought about the fuel cut off issue but that only comes past 11 or 12 psi from what I hear. Everything in the car is stock. I'll look into a boost leak and such if the tune up doesn't do the trick.

04-04-2007, 02:00 PM	#14
Vr-4-Life Tri-State Post Whore Join Date: May 2006 Location: Philly PA Member #1961 My Ride: BMW E60 M5 V10 6 Speed --- Ducati Monster 696 iTrader: (4)	Jon.. why not just ask your brother... it could be spark blowout like everyone is saying.. try getting some ngk copper plugs and ill gap them down and install them for you.. and get copper.. dont let them talk u into platinum or anything

04-04-2007, 03:39 PM	#15
77F-150 Tri-State Aficionado Join Date: Mar 2005 Location: Morrisville, Pa. Member #280 My Ride: 1977 F-150: 1995 Civic CX: 1985 Nighthawk CB700SC iTrader: (0)	did you start to have the problem when it was raining outside

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
problem with speakers, and sound card.... please help	On Sale	Off-Topic	11	10-13-2007 02:05 AM
Knocking Injector? My Problem?	Willdue	Mitsubishi Talk	17	03-26-2007 07:38 PM
computer gurus...no sound problem	olmytsi	Off-Topic	9	11-25-2005 03:05 PM
Evo injector?	MaxRPM	General Car Related Chat	2	09-17-2005 05:47 AM