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2005 Kia Spectra chacing a missfire

Tiny
MWHALEN559
  • MEMBER
  • 2005 KIA SPECTRA
  • 1.8L
  • 4 CYL
  • FWD
  • MANUAL
  • 250,000 MILES
I have a 205 kia my friend put 2 gal of 2 stroke in it I imediately put a full take of regular in to dilude it called for missfire on cyl 3 got spark found lack of spray on injector replaced injector car ran like a beat 70 miles light again miss fire 1.2.3.4 found bad wire replace wire for cyl one caseing was broken all the way dow white instlation was outta caseing cleared codes good for 50miles pulling codagain miss cyl 4. Cleared for curiosity came again miss cyl 1 car runs like a champ till 3k rpms then loses all power till below 3k again at a loss thinking fuel filter? Car has 250k 70 on engine and trans all cyls a 48 psi compression. Check engine light was on night before 2 stroke went in but wasnt flashing after 2 stroke flashing car over heated once I stoped while run cooled down in second never happened again aafter adding water
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Thursday, January 22nd, 2015 AT 10:37 AM

10 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
If one cylinder has 48 psi compression then it's either a head gasket blew or a valve burnt something like that.
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Thursday, January 22nd, 2015 AT 12:09 PM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
You probably should do that compression test again. The engine couldn't possibly run with all cylinders at 48 PSI.N 2 stroke is simply gasoline with a little oil mixed it. It won't do any harm beyond smoking a little.
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Thursday, January 22nd, 2015 AT 2:14 PM
Tiny
MWHALEN559
  • MEMBER
  • 5 POSTS
My mistake it has 148 sorry missed the 1
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Thursday, January 29th, 2015 AT 10:35 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
So you have a code of p0300-304 I take it. These are hard to diagnose an d a pro should do it so you don't end up paying for unnecessary parts and aggravation and still have the problem. You can check for a vacuum leak however. Fuel pressure with a gauge too auto parts rent it.
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Thursday, January 29th, 2015 AT 12:15 PM
Tiny
MWHALEN559
  • MEMBER
  • 5 POSTS
Only codes are miss fire codes that come and go from cyl to cyl at random have good fuel pressure have good spark
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Thursday, January 29th, 2015 AT 12:20 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Like I said have apro find it because it can be any sensor causing this along wih low fuel pressure.
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Thursday, January 29th, 2015 AT 12:27 PM
Tiny
MWHALEN559
  • MEMBER
  • 5 POSTS
It brought it in to shop today for a evaluation hopfully its something simple I can do I was starting to wonder if crank sensor went bad
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Thursday, January 29th, 2015 AT 12:37 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
If crank sensor goes bad normally it won't start
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Thursday, January 29th, 2015 AT 3:48 PM
Tiny
MWHALEN559
  • MEMBER
  • 5 POSTS
Brought car to shop today there telling me plugs and wires which I did 8 months ago.
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Thursday, January 29th, 2015 AT 6:23 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Cold be that but if it isn't they have wasted money not you
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Friday, January 30th, 2015 AT 6:10 AM

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