Break in

jonnotch · May 24th, 2007, 12:12 AM

Well make a long story short. four cylinders two on each side only were firing but the car ran smooth as i broke the motor in. wouldn't hold an idle so i didn't try starting it again. Would teh ground coming out of teh wiring harness if not grounded well would it affect the injectors to spraying? and would one of teh alternator connections not hooked would that affect the firing of teh car?

Thanks

Jon

invisa stang · May 24th, 2007, 04:11 PM

is your car a 8, 6, or 4 cyl. first

HMUSN · May 24th, 2007, 04:18 PM

Originally Posted by invisa stang

is your car a 8, 6, or 4 cyl. first

read his sig.

Its a 306.

that would be an 8cyl.

I'm not sure on how to answer your question man.. the notch guys will be on shortly though to help out

SALIV8 · May 24th, 2007, 04:51 PM

alternator doesnt affect the firing, the injectors do need a ground but i thought the computer grounds the injectors to control pulse width, but either wayyou need voltage to operate the injectors so connections are important. When u say firing you mean fuel?

JBIGBOOTSY · May 24th, 2007, 06:17 PM

check for spark on all cyl.s, then take a screwdriver and press it against each injector, stick your ear on the screwdriver handle and listen for the tick.tick.tick. If you have to you can put two screwdrivers together, the injector noise is pretty strong, you may even be able to feel it with out listening to it. see if they're all ticking, car must be running.

jonnotch · May 25th, 2007, 12:54 PM

well The car ran smooth and 4 cylinders were actually firing so fuel was getting to hte rail so either power is not getting to the injectors or they have failed. There the original injectors but they worked last year. Do all the grounds have to hooked to the back of the heads? I can only see 4 total ground for the entire car? I hope I am not missing any. Is the injectors on two circuit? thanks for your help

chadjones99 · May 27th, 2007, 06:14 PM

years ago i had injector problems , that i started getting after not hooking up all the grounds, after word i replaced the bad injectors and fixed ground al was good.

cali 5.0 · May 27th, 2007, 07:39 PM

how do u no u were runnig on 4 cylinders? jus wanna no?

May 24th, 2007, 12:12 AM	#1
jonnotch Regular Join Date: Feb 2007 Location: Chicago, Ill Posts: 54 iTrader: 0 reviews	Break in Well make a long story short. four cylinders two on each side only were firing but the car ran smooth as i broke the motor in. wouldn't hold an idle so i didn't try starting it again. Would teh ground coming out of teh wiring harness if not grounded well would it affect the injectors to spraying? and would one of teh alternator connections not hooked would that affect the firing of teh car? Thanks Jon __________________ 1992 Mustang Notchback-306, road race project.

May 24th, 2007, 04:11 PM	#2
invisa stang Regular 1992 mustang lx notch Join Date: May 2007 Location: shelton, ct Posts: 423 iTrader: 0 reviews	is your car a 8, 6, or 4 cyl. first __________________ [rides 1987 ford F-350 XLT Lariat 7.3L idi diesel projects 1979 ford F-350 custom (soon to get 7.3Lidi diesel) 1992 ford mustang notch (just shell soon to get engine and drive train hopefully)

May 24th, 2007, 06:17 PM	#5
JBIGBOOTSY MM Fanatic 1990 LX hatch Join Date: Aug 2006 Location: Hobart Indiana Posts: 4,391 iTrader: 0 reviews	check for spark on all cyl.s, then take a screwdriver and press it against each injector, stick your ear on the screwdriver handle and listen for the tick.tick.tick. If you have to you can put two screwdrivers together, the injector noise is pretty strong, you may even be able to feel it with out listening to it. see if they're all ticking, car must be running. __________________ Bolt-on Abraham Lincoln Log motor. With extra wiring.

May 25th, 2007, 12:54 PM	#6
jonnotch Regular Join Date: Feb 2007 Location: Chicago, Ill Posts: 54 iTrader: 0 reviews	well The car ran smooth and 4 cylinders were actually firing so fuel was getting to hte rail so either power is not getting to the injectors or they have failed. There the original injectors but they worked last year. Do all the grounds have to hooked to the back of the heads? I can only see 4 total ground for the entire car? I hope I am not missing any. Is the injectors on two circuit? thanks for your help __________________ 1992 Mustang Notchback-306, road race project.

May 27th, 2007, 06:14 PM	#7
chadjones99 Regular Join Date: Aug 2006 Location: Tonopah,az Posts: 86 iTrader: 0 reviews	years ago i had injector problems , that i started getting after not hooking up all the grounds, after word i replaced the bad injectors and fixed ground al was good. __________________ 1986 stang ,Edelbrook intake, aluminum heads, E303 cam ,70 MM throttle body ,24lb injectors ,373 gears , 10:1 pistons set up,no cats , flowmaster mufflers , short shifter , 255 fuel pump , smog pump delete , A/C delete , Aluminum Radiator , MAF convertion

May 24th, 2007, 04:51 PM	#4
SALIV8 all motor 92 coupe 9.94@136.40 Join Date: Dec 2006 Location: Chicago Posts: 576 iTrader: 0 reviews	alternator doesnt affect the firing, the injectors do need a ground but i thought the computer grounds the injectors to control pulse width, but either wayyou need voltage to operate the injectors so connections are important. When u say firing you mean fuel?

May 27th, 2007, 07:39 PM	#8
cali 5.0 Regular Join Date: May 2006 Location: grand prairie tx Posts: 383 iTrader: 0 reviews	how do u no u were runnig on 4 cylinders? jus wanna no? __________________ 89 gt 3.73 gears, full exhaust, holley system max2 intake manifold, 70mm throttle body, jet chip

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