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Engine First start after 8 months, smoking in the engine bay.

  • Thread starter Thread starter opihinalu
  • Start date Start date Jan 30, 2022
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    foxbody foxbody 5.0 smoking
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mikestang63

SN Certified Technician
Aug 27, 2012
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In the garage
Feb 19, 2022
#41
  • Feb 19, 2022
  • #41
sounds like you wired something wrong with the fan install. I would start by disconnecting the power wire from the battery to the fan. Then check for voltage drop from the battery to the solenoid, down to the starter... also check the grounds for continuity. Check for any + wires under the hood that are melted, grounded, YOu may have to unwrap them from the loom. electrical tape. FInally make sure you rewired the wires going to the solenoid correctly.
 

opihinalu

Active Member
Feb 10, 2021
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Feb 19, 2022
#42
  • Feb 19, 2022
  • #42
mikestang63 said:
sounds like you wired something wrong with the fan install. I would start by disconnecting the power wire from the battery to the fan. Then check for voltage drop from the battery to the solenoid, down to the starter... also check the grounds for continuity. Check for any + wires under the hood that are melted, grounded, YOu may have to unwrap them from the loom. electrical tape. FInally make sure you rewired the wires going to the solenoid correctly.
Click to expand...
Thank you. I will update what I find.
 

Gs1987GT

Active Member
Sep 25, 2019
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Feb 26, 2022
#43
  • Feb 26, 2022
  • #43
If your battery read 11 volts and all you did was charge it, stop now, pull the battery, take it to an auto parts store and have it load tested first. 11v static is not sufficient, as noted prior.

If it's been sitting 8 months not maintained, it could have discharged to the point it won't recover (take a full charge) again.

The only way to know is have the battery load trested. As general stated, start with the basics first, go from there. I dont have your first post up right now. Has the fuel filter been changed recently?

The smoking you described concerns me. Something got hot in that area, check all wires, components and connections in that area real good. Good luck.
 
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opihinalu

Active Member
Feb 10, 2021
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Feb 27, 2022
#44
  • Feb 27, 2022
  • #44
Gs1987GT said:
If your battery read 11 volts and all you did was charge it, stop now, pull the battery, take it to an auto parts store and have it load tested first. 11v static is not sufficient, as noted prior.

If it's been sitting 8 months not maintained, it could have discharged to the point it won't recover (take a full charge) again.

The only way to know is have the battery load trested. As general stated, start with the basics first, go from there. I dont have your first post up right now. Has the fuel filter been changed recently?

The smoking you described concerns me. Something got hot in that area, check all wires, components and connections in that area real good. Good luck.
Click to expand...
I will get my battery tested. Yes I changed the fuel filter after it wouldn’t start because I thought that was the problem. It reads 35psi at the Schrader valve. The only thing that I changed that area when I did all of the work to it was headers as well as some electric fan wiring that is over there.

Though it should be noted that I do smell the same burning smell every time I try to start the car.
 

Cheapskate207

The left one hangs a little lower
5 Year Member
Jan 12, 2020
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Feb 27, 2022
#45
  • Feb 27, 2022
  • #45
I am not an expert but I have a hunch that the burning you smell could be the starter, battery, or ground cables. I would feel them to see if they’re warm. If they are check to see all your connections are tight and in good shape.. including your battery terminals and ground cable. Speaking of grounds, is your ground from the engine to the body present?
 

opihinalu

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Feb 10, 2021
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Feb 28, 2022
#46
  • Feb 28, 2022
  • #46
Here’s a pic of my cylinder 1 spark plug if this can tell anyone anything, they were brand new
 

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opihinalu

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Feb 10, 2021
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Feb 28, 2022
#47
  • Feb 28, 2022
  • #47
Cheapskate207 said:
I am not an expert but I have a hunch that the burning you smell could be the starter, battery, or ground cables. I would feel them to see if they’re warm. If they are check to see all your connections are tight and in good shape.. including your battery terminals and ground cable. Speaking of grounds, is your ground from the engine to the body present?
Click to expand...
It’s coming from the driver side of the car so you might be right about the battery or the ground cables. Where is the engine to body ground? I will feel if it’s hot after I start once I get it assembled again
opihinalu said:
Here’s a pic of my cylinder 1 spark plug if this can tell anyone anything
Click to expand...
 

nickyb

I gotta say i never painted my nuts, Never Ever
15 Year Member
Apr 3, 2009
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Feb 28, 2022
#48
  • Feb 28, 2022
  • #48
There is a driver's side head to body ground( back of head)You can also add one from any front assy. Bolt to the frame.
 

General karthief

wonder how much it would cost to ship you a pair
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Feb 28, 2022
#49
  • Feb 28, 2022
  • #49
There is the main battery to block ground, it's bolted to the timing cover that has a boss by the oil sending unit. There is a smaller wire from the negative cable to the inner fender panel between the battery and the solenoid, the same screw should have another wire to a cylindrical connector. There is the ground that attaches to the back of the driver side head to a screw on the fire wall. I doubt it would be a ground wire that is overheating, You should be able to tell if you have a burnt wire in the glob of wires below the solenoid, the plastic covering the wire will be all goofy and soft.
 
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opihinalu

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Mar 8, 2022
#50
  • Mar 8, 2022
  • #50
Update: it was the ignition coil.
I know I’m an idiot, don’t remind me.
There was still a ton of smoke though, I think even more than before. I was too scared to let it run longer so I never had a chance to get out of the car and tell where it was coming from.
I am also curious as to why my ignition coil went bad in the first place.

Thanks for the help everybody.
 

General karthief

wonder how much it would cost to ship you a pair
20+ Year Stangneter
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Mar 8, 2022
#51
  • Mar 8, 2022
  • #51
Does it smell like oil or burnt wires?
 

opihinalu

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Mar 8, 2022
#52
  • Mar 8, 2022
  • #52
General karthief said:
Does it smell like oil or burnt wires?
Click to expand...
Not sure what burnt wires smell like, though I do think it kind of smells like oil.
 

Olivethefet

I will own your nuts! LOL
5 Year Member
May 17, 2018
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Mar 8, 2022
#53
  • Mar 8, 2022
  • #53
Did you replace the coil and now it runs or is this just the latest development? I get confused easy so I'm just verifying.
 

7991LXnSHO

wanna catch the space herp
10 Year Member
Sep 1, 2010
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Kearney, NE
Mar 8, 2022
#54
  • Mar 8, 2022
  • #54
opihinalu said:
Update: it was the ignition coil.
I know I’m an idiot, don’t remind me.
There was still a ton of smoke though, I think even more than before. I was too scared to let it run longer so I never had a chance to get out of the car and tell where it was coming from.
I am also curious as to why my ignition coil went bad in the first place.

Thanks for the help everybody.
Click to expand...
If you never took your car to church, that’s why the coil went bad and started to smoke.

You can learn what melted wire insulation smells like by creating a short on a sacrificial wire. Trying this at home will be informative but not probably safe. Get your jumper cables hooked up to the battery so you do not create a spark near the battery, and touch the wire to the other clamps that are away from the battery. The wire should act like a fuseable link, but some wire is going to get hot. Wear leather gloves, or don’t do it at all. Use your good judgement here.
 

opihinalu

Active Member
Feb 10, 2021
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Mar 8, 2022
#55
  • Mar 8, 2022
  • #55
Olivethefet said:
Did you replace the coil and now it runs or is this just the latest development? I get confused easy so I'm just verifying.
Click to expand...
Yes I bought a new cheap coil from autozone and rigged it up and it started right up.
 

opihinalu

Active Member
Feb 10, 2021
180
19
28
Florida
Mar 8, 2022
#56
  • Mar 8, 2022
  • #56
Olivethefet said:
Did you replace the coil and now it runs or is this just the latest development? I get confused easy so I'm just verifying.
Click to expand...
Yes I bought a new cheap coil from autozone and rigged it up and it started right up.
 

opihinalu

Active Member
Feb 10, 2021
180
19
28
Florida
Mar 8, 2022
#57
  • Mar 8, 2022
  • #57
7991LXnSHO said:
If you never took your car to church, that’s why the coil went bad and started to smoke.

You can learn what melted wire insulation smells like by creating a short on a sacrificial wire. Trying this at home will be informative but not probably safe. Get your jumper cables hooked up to the battery so you do not create a spark near the battery, and touch the wire to the other clamps that are away from the battery. The wire should act like a fuseable link, but some wire is going to get hot. Wear leather gloves, or don’t do it at all. Use your good judgement here.
Click to expand...
Noted, will sit it next to me this Sunday.

Sounds like a fun experiment. I’ll check it out, thank you.
 

nickyb

I gotta say i never painted my nuts, Never Ever
15 Year Member
Apr 3, 2009
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Mar 8, 2022
#58
  • Mar 8, 2022
  • #58
Glad your back running.
 

General karthief

wonder how much it would cost to ship you a pair
20+ Year Stangneter
Aug 25, 2016
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polk county florida
Mar 8, 2022
#59
  • Mar 8, 2022
  • #59
If you switch the ignition to on does it smoke?
 

opihinalu

Active Member
Feb 10, 2021
180
19
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Florida
Mar 9, 2022
#60
  • Mar 9, 2022
  • #60
Alright another update
Started him (yes my car is a dude) up again today a few times and it seemed as if the smoking died down more and more each time. I noticed it was coming from my headers and that might be because of a break fluid leak I had in the area. I set timing and he is purring. Question though, is this distributor not sitting flush? I can’t get it down any further because of the little hold down. This is a new aftermarket distributor:
PS:the bolt was loose in the image
 
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