Misfiring problem
Thread Starter
Registered User
Joined: Sep 2011
Posts: 37
Likes: 0
From: ca
Misfiring problem
Hello, I got a misfire from my car
the code are
P0300 Random Misfired
P0303 cylinder 3 misfired
P0305 cylinder 5 misfired
I changed the spark plugs and the spark plugs wire but it seem still misfire. I did a search but it seem every thread the thread starter seem to disappear and not post how they solve their problems -____-.....
the code are
P0300 Random Misfired
P0303 cylinder 3 misfired
P0305 cylinder 5 misfired
I changed the spark plugs and the spark plugs wire but it seem still misfire. I did a search but it seem every thread the thread starter seem to disappear and not post how they solve their problems -____-.....
Lexus Champion
Joined: Dec 2011
Posts: 4,078
Likes: 87
From: Birmingham, AL
which codes came back? - all of them?
if it keeps indicating cylinders 3 & 5 then it will fairly easy to figure out, either related to fuel or ignition or engine issue in those cylinders
most likely suspects:
distributor caps
injectors
the problem will definitely be one of the following:
Ignition System
Injector
Fuel Line Pressure
EGR
Compression
Valve clearance
Valve timing
MAF meter
Engine Coolant Temp. Sensor (ECTS)
ECU Capacitors
why not start with replacing dist. caps & rotors, ECTS, and ECU capacitors, in that order, as these are three common problem areas in a 96 LS and use genuine Toyota parts for ECTS and distributor caps & rotors
if it keeps indicating cylinders 3 & 5 then it will fairly easy to figure out, either related to fuel or ignition or engine issue in those cylinders
most likely suspects:
distributor caps
injectors
the problem will definitely be one of the following:
Ignition System
Injector
Fuel Line Pressure
EGR
Compression
Valve clearance
Valve timing
MAF meter
Engine Coolant Temp. Sensor (ECTS)
ECU Capacitors
why not start with replacing dist. caps & rotors, ECTS, and ECU capacitors, in that order, as these are three common problem areas in a 96 LS and use genuine Toyota parts for ECTS and distributor caps & rotors
Last edited by LScowboyLS; Oct 20, 2012 at 12:45 PM.
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Thread Starter
Registered User
Joined: Sep 2011
Posts: 37
Likes: 0
From: ca
when it idle it sputter like alot, engine shakes alot too
it sputter less when i step on gas. should i post a video of it? kinda hard to explain
crap i forgot to get the result but cylinder 1 has no compression and cylinder 3 has a low compression
it sputter less when i step on gas. should i post a video of it? kinda hard to explain
crap i forgot to get the result but cylinder 1 has no compression and cylinder 3 has a low compression
Lexus Champion
Joined: Dec 2011
Posts: 4,078
Likes: 87
From: Birmingham, AL
if you did the compression test correctly, and you truly have no compression in cylinder 1, then you have major engine issues, i.e. a bent valve or a hole in the piston etc. - there is no low cost fix for these kind of problems, you are looking at big money, as no small problem can cause complete loss of compression in a cylinder.
how confident are you in your compression testing tools and ability?
how confident are you in your compression testing tools and ability?
Thread Starter
Registered User
Joined: Sep 2011
Posts: 37
Likes: 0
From: ca
if you did the compression test correctly, and you truly have no compression in cylinder 1, then you have major engine issues, i.e. a bent valve or a hole in the piston etc. - there is no low cost fix for these kind of problems, you are looking at big money, as no small problem can cause complete loss of compression in a cylinder.
how confident are you in your compression testing tools and ability?
how confident are you in your compression testing tools and ability?
actually none of them do free test i went earlier =[
190k and timing belt was changed last week
Lexus Champion
Joined: Dec 2011
Posts: 4,078
Likes: 87
From: Birmingham, AL
maybe i should just stop driving the car far huh?
190k and timing belt was changed last week
- did these codes and rough running pop up right after that? - an incorrectly installed timing belt can DEFINITELY bend one or more valvesif so - the person who installed the timing belt may well owe you an engine
Last edited by LScowboyLS; Oct 21, 2012 at 02:45 PM.
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