Possible ignition problem ( very hesitant weak motor )

BlazeAtwood10

New Member
Feb 22, 2021
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Hello, I have a 1994 mustang gt 5.0. I have been getting car ready to be daily driven and this motor is super weak. Its super hesitant on the low end and suddenly picks up power at the end of the rpm band. I'm suspecting ignition trouble weak coil, tfi sensor, hall effect sensor. The car backfires and gets terrible fuel economy, light white smoke out the tail pipe when under load, hard to start takes roughly 4 to 5 cranks. When I say this motor is weak I mean weak I was just trying to get up 40 from a stop and I had to floor it to stay with a jetta just normally driving. I couldn't spin a tire if I tired. At first I suspected a fuel delivery issue because of the uneven idle along with the other problems, but there is no sputtering or jolting I can notice. I'd love a little insight. If I can't get any specific answer I'll have to resort to getting all the listed thing above replaced. ( also spark plugs are new, when first replaced the motor ran a little stronger and it has died out again )
 
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BlazeAtwood10

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Feb 22, 2021
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Car has 84,000 miles on it if its any help. With an msd distributor and wires that were on it when I bought it could be years old
 

BlazeAtwood10

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Feb 22, 2021
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The engine jas been replaced?
Did you do the work?
Is the car all stock?
The engine is 100% stock and has never been replaced to my knowledge. And the only thing I've touched since I purchased it last year is exhaust, and interior electrical problems ( locks, mirror switches, fuses, etc.)
 

BlazeAtwood10

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Feb 22, 2021
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The engine is 100% stock and has never been replaced to my knowledge. And the only thing I've touched since I purchased it last year is exhaust, and interior electrical problems ( locks, mirror switches, fuses, etc.)
+ spark plugs.

I tend to do all my own work I have all the necessary tools and most of the know how
 
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General karthief

wonder how much it would cost to ship you a pair
Mod Dude
Aug 25, 2016
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polk county florida
Ok, here ya go:
Do the list step by step, don't skip around. Take notes, test on friday. Seriously, take notes and be aware the 94-5 are a little different than the 93 and older 5.0 stuff so it's highlighted. This will show you how to correctly preform test procedures and how some things work.
If you have any questions post them here.
 

BlazeAtwood10

New Member
Feb 22, 2021
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Ok, here ya go:
Do the list step by step, don't skip around. Take notes, test on friday. Seriously, take notes and be aware the 94-5 are a little different than the 93 and older 5.0 stuff so it's highlighted. This will show you how to correctly preform test procedures and how some things work.
If you have any questions post them here.
Thanks for the timely responses, the people on this forum are awesome. I really appreciate it
 

jozsefsz

5 Year Member
Aug 11, 2013
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Cleveland OH Area
Does the light white smoke you describe smell strongly of fuel? Hard starts, poor idle, and white smoke might mean a stuck fuel injector. Just a guess based on the symptoms you list - follow the checklist the General provides for best results.
 
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BlazeAtwood10

New Member
Feb 22, 2021
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Does the light white smoke you describe smell strongly of fuel? Hard starts, poor idle, and white smoke might mean a stuck fuel injector. Just a guess based on the symptoms you list - follow the checklist the General provides for best results.
I guess that could be possible, it mostly just smells rich. I'm going to go through the check list next week, ill tell you guys the results. I appreciate all the help.