Injectors

Mando95 · October 14th, 2009, 07:39 PM

I think i have a bad injector, when im driving the car at a steady speed its fine but when i give it a little throttle it seems to sputter, but when i have it in neutral it revs fine any suggestion? what else do you need to know?

95BlackStang · October 14th, 2009, 11:35 PM

maybe fuel filter.

Mando95 · October 15th, 2009, 09:13 AM

I have already replaced it but still no change and also the fuel pump is about a year old

Bullitt95 · October 15th, 2009, 09:26 AM

Clean the MAF sensor.
Check the injector harnesses and make sure they're firmly attached to the injectors.
Check plugs, plug wires, dizzy cap, and rotor for wear. Replace as necessary.

Mando95 · October 15th, 2009, 03:36 PM

I have tune a complete tune so far and still the same thing getting the cars scanned today and see what turns out

Trick Tuners · October 15th, 2009, 04:38 PM

I doubt its an injector. Talk with your tuner and shoot them a datalog so they can see whats going on.

95StangMX · October 16th, 2009, 01:04 PM

Easy way to tell if its an injector start the car up and pull the plug on your injectors one at a time and you should notice the car stumble a little each time....if you pull one and dont notice anything and you do on the others then chances are you have a bad injector....

Mando95 · October 16th, 2009, 08:14 PM

Ill give that a try in the morning, is there an easy way to clean the injectors your self?

95BlackStang · October 16th, 2009, 08:37 PM

Originally Posted by Mando95

Ill give that a try in the morning, is there an easy way to clean the injectors your self?

that fuel injector cleaner they sell at autozone and stuff

Trick Tuners · October 16th, 2009, 09:59 PM

The injector failure rate is very low. Dropping out 1 cylinder is only 13% of the total. I'd suspect the fuel pump, maf, or tune WAY before a bad injector. With today's gas, injectors with 50-100K mi on them never look gummed up.

Mando95 · October 17th, 2009, 06:09 PM

So i just took my car to be scanned and pulled a 136 which said 02 sensor heater so i took mine and exchanged them cause they still warranty but still does the same thing. Is there somthing else i should look at with the 136 code. Its getting annoying now and patience is wearing thin so any would help.

castine917 · October 17th, 2009, 08:49 PM

do you have a fuel pressure gauge?can you drive and see if pressure fluctuates when it sputters?

Mando95 · October 17th, 2009, 10:20 PM

no i dont have one but i can get my hands on one, but i just put a new 255lph pump in it yesterday

castine917 · October 17th, 2009, 10:27 PM

was the old pump the same as the new one? can you be sure fuel pressure is same?

Mando95 · October 18th, 2009, 01:08 AM

the old pump was just a stocker

castine917 · October 18th, 2009, 11:34 AM

i recommend an adjustable fuel pressure regulator and a gauge to see if you are where you need to be pressure wise.

Mando95 · October 18th, 2009, 02:23 PM

i test my injectors and found a bad one they all read 15.4 ohms but one so i think i found the problem.

Mando95 · October 20th, 2009, 09:00 PM

So i replaced the injector and it runs perfect.

Bullitt95 · October 21st, 2009, 06:04 AM

Nice to hear that you've resolved the problem.

delgadog · October 28th, 2009, 06:39 PM

if you don't mind me asking, how much was it to replace your injectors? i'm running into the same problem, i don't have the time nor the know how to check out the injectors. i bought some used 24# injectors off of a 93 cobra (at least thats what the guy told me) and the C&L 73 or 74mm MAF calibrated for 24# injectors. and i'm wondering how much would it be to install all that. maybe i could get that damn sputtering problem fixed. i have an adjustable fuel regulator but no fuel pressure gauge. i should get one.lol. any ideas on which pressure gauge would be good on our cars? i don't know much about them. thanks!

October 14th, 2009, 07:39 PM	#1
Mando95 Regular 95 mustang gt Join Date: Sep 2009 Location: Camp Lejeune, NC Posts: 73	Injectors I think i have a bad injector, when im driving the car at a steady speed its fine but when i give it a little throttle it seems to sputter, but when i have it in neutral it revs fine any suggestion? what else do you need to know? __________________

October 14th, 2009, 11:35 PM	#2
95BlackStang Enthusiast 1995 mustang gt Join Date: Jul 2008 Location: houston Posts: 595	maybe fuel filter. __________________ 95 GT vert.... gone but not forgotten 99 Electric Green GT

October 15th, 2009, 09:13 AM	#3
Mando95 Regular 95 mustang gt Join Date: Sep 2009 Location: Camp Lejeune, NC Posts: 73	I have already replaced it but still no change and also the fuel pump is about a year old __________________

October 15th, 2009, 09:26 AM	#4
Bullitt95 Enthusiast 1995 Mustang GT auto 13.46@104.5 Join Date: Apr 2007 Location: Al Ain, UAE Posts: 666	Clean the MAF sensor. Check the injector harnesses and make sure they're firmly attached to the injectors. Check plugs, plug wires, dizzy cap, and rotor for wear. Replace as necessary. __________________

October 15th, 2009, 03:36 PM	#5
Mando95 Regular 95 mustang gt Join Date: Sep 2009 Location: Camp Lejeune, NC Posts: 73	I have tune a complete tune so far and still the same thing getting the cars scanned today and see what turns out __________________

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October 15th, 2009, 04:38 PM	#6
Trick Tuners Hardcore Enthusiast KB'd GT Join Date: Nov 2006 Location: San Diego Posts: 2,436	I doubt its an injector. Talk with your tuner and shoot them a datalog so they can see whats going on. __________________ SCT Tuning, JLT intakes, Aeroforce OBDII gauges and PLX wideband products @ Trick Tuners My forums Xcal3 SF with preloaded tunes and free custom tunes for life for $379 shipped. Custom tunes based on actual data is extra.

October 16th, 2009, 01:04 PM	#7
95StangMX Hardcore Enthusiast 95 Mustang GT depends how many people are pushing Join Date: Oct 2007 Location: Playa del Carmen, Mexico Posts: 1,691	Easy way to tell if its an injector start the car up and pull the plug on your injectors one at a time and you should notice the car stumble a little each time....if you pull one and dont notice anything and you do on the others then chances are you have a bad injector.... __________________

October 16th, 2009, 08:14 PM	#8
Mando95 Regular 95 mustang gt Join Date: Sep 2009 Location: Camp Lejeune, NC Posts: 73	Ill give that a try in the morning, is there an easy way to clean the injectors your self? __________________

October 16th, 2009, 09:59 PM	#10
Trick Tuners Hardcore Enthusiast KB'd GT Join Date: Nov 2006 Location: San Diego Posts: 2,436	The injector failure rate is very low. Dropping out 1 cylinder is only 13% of the total. I'd suspect the fuel pump, maf, or tune WAY before a bad injector. With today's gas, injectors with 50-100K mi on them never look gummed up. __________________ SCT Tuning, JLT intakes, Aeroforce OBDII gauges and PLX wideband products @ Trick Tuners My forums Xcal3 SF with preloaded tunes and free custom tunes for life for $379 shipped. Custom tunes based on actual data is extra.

October 17th, 2009, 06:09 PM	#11
Mando95 Regular 95 mustang gt Join Date: Sep 2009 Location: Camp Lejeune, NC Posts: 73	So i just took my car to be scanned and pulled a 136 which said 02 sensor heater so i took mine and exchanged them cause they still warranty but still does the same thing. Is there somthing else i should look at with the 136 code. Its getting annoying now and patience is wearing thin so any would help. __________________

October 17th, 2009, 08:49 PM	#12
castine917 Newbie 95gt,67maro,97f150,99burb Join Date: Oct 2009 Location: middleville,mi Posts: 13	do you have a fuel pressure gauge?can you drive and see if pressure fluctuates when it sputters?

October 17th, 2009, 10:20 PM	#13
Mando95 Regular 95 mustang gt Join Date: Sep 2009 Location: Camp Lejeune, NC Posts: 73	no i dont have one but i can get my hands on one, but i just put a new 255lph pump in it yesterday __________________

October 17th, 2009, 10:27 PM	#14
castine917 Newbie 95gt,67maro,97f150,99burb Join Date: Oct 2009 Location: middleville,mi Posts: 13	was the old pump the same as the new one? can you be sure fuel pressure is same?

October 18th, 2009, 01:08 AM	#15
Mando95 Regular 95 mustang gt Join Date: Sep 2009 Location: Camp Lejeune, NC Posts: 73	the old pump was just a stocker __________________

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October 18th, 2009, 11:34 AM	#16
castine917 Newbie 95gt,67maro,97f150,99burb Join Date: Oct 2009 Location: middleville,mi Posts: 13	i recommend an adjustable fuel pressure regulator and a gauge to see if you are where you need to be pressure wise.

October 18th, 2009, 02:23 PM	#17
Mando95 Regular 95 mustang gt Join Date: Sep 2009 Location: Camp Lejeune, NC Posts: 73	i test my injectors and found a bad one they all read 15.4 ohms but one so i think i found the problem. __________________

October 20th, 2009, 09:00 PM	#18
Mando95 Regular 95 mustang gt Join Date: Sep 2009 Location: Camp Lejeune, NC Posts: 73	So i replaced the injector and it runs perfect. __________________

October 21st, 2009, 06:04 AM	#19
Bullitt95 Enthusiast 1995 Mustang GT auto 13.46@104.5 Join Date: Apr 2007 Location: Al Ain, UAE Posts: 666	Nice to hear that you've resolved the problem. __________________

October 28th, 2009, 06:39 PM	#20
delgadog Regular 1995 Mustang GT 14.7@93 Join Date: Dec 2006 Location: Tampa, Fl Posts: 109	if you don't mind me asking, how much was it to replace your injectors? i'm running into the same problem, i don't have the time nor the know how to check out the injectors. i bought some used 24# injectors off of a 93 cobra (at least thats what the guy told me) and the C&L 73 or 74mm MAF calibrated for 24# injectors. and i'm wondering how much would it be to install all that. maybe i could get that damn sputtering problem fixed. i have an adjustable fuel regulator but no fuel pressure gauge. i should get one.lol. any ideas on which pressure gauge would be good on our cars? i don't know much about them. thanks! __________________ GT-40P heads, CAI, U/D pullies, u/l eddie intakes, FRPP shorty headers, O/R X-pipe, 3.73 gears, alluminum drive shaft, king cobra clutch, 75 shot nitrous, 70mm TB, fuel pressure regulator, pro 5.0 shifter, 255lph fuel pump