Random Misfires / Camshaft Position Sensor - Fixed!

exist3nce · Post by **exist3nce** » Fri Aug 18, 2006 4:06 am

MMamdouh wrote:
exist3nce wrote:
MMamdouh wrote: OMG i am sure it is blocked as hell by now... under my countrey's "nice" conditions the fuel filter gets clogged after some 20,000 kms so under the best reconing yours is blocked indeed.

MMamdouh
I don't think it says anything in the maintainance schedule about changing the fuel filter this early?
i have it mentioned very clear in my user's manual, fuel filter @ 40,000 kms... at half this distance mine is subistantially restricted.

MMamdouh

I'm not sure what kind of driving conditions you are in to replace it after 40,000km. I just checked my manual, the first fuel filter change is at 150,000 km.

Daniel · Post by **Daniel** » Fri Aug 18, 2006 7:12 am

Hi,

Maybe your Optra fuel system has a pre-filter located somewhere. For our Daewoo the fuel filter replacement interval is 40km--->48km depending of manuals.

Daniel

MMamdouh · Post by **MMamdouh** » Fri Aug 18, 2006 11:52 am

i am sure this 150k kms is way over rated... my advice is still the same: check the fuel filter.

MMamdouh

JohnnyC · Post by **JohnnyC** » Fri Aug 18, 2006 7:43 pm

I'm swapping out my fuel filter pretty soon anyway. I'll let you know the results.

daewhorider · Post by **daewhorider** » Sun Aug 20, 2006 7:15 am

You need to replace your spark plugs. SAme thing happened to me at around 25000 miles. Now at 27000 and its still running great.

exist3nce · Post by **exist3nce** » Mon Aug 21, 2006 12:19 am

daewhorider wrote:You need to replace your spark plugs. SAme thing happened to me at around 25000 miles. Now at 27000 and its still running great.

I've already checked the spark plugs, they are in near perfect condition.

exist3nce · Post by **exist3nce** » Mon Aug 21, 2006 12:36 am

Maybe I will check the fuel filter, altho I doubt its the problem. How hard is it to check / where is it located?

Aneab · Post by **Aneab** » Mon Aug 21, 2006 6:46 am

exist3nce wrote:Maybe I will check the fuel filter, altho I doubt its the problem. How hard is it to check / where is it located?

It's behind the intake manifold mounted to the firewall, at least thats where i saw it in most pictures, it has a hose with a yellow tag attached to it.

Pink circle is of the fuel filter.

MMamdouh · Post by **MMamdouh** » Mon Aug 21, 2006 7:16 am

also check the how to sction for replacment steps.

MMamdouh

daewhorider · Post by **daewhorider** » Tue Aug 22, 2006 2:49 am

exist3nce wrote:
daewhorider wrote:You need to replace your spark plugs. SAme thing happened to me at around 25000 miles. Now at 27000 and its still running great.
I've already checked the spark plugs, they are in near perfect condition.

Mine had 25000 miles, the spark plugs looked perfect. Its 6.00 USD for 4 of the bosch cheap ones at autozone and its like a 15 minute swap, try it and you will thank me later. believe me it should work, if not oh well you got a new set of spark plugs you have nothing to lose.

JohnnyC · Post by **JohnnyC** » Wed Aug 23, 2006 11:09 pm

Well... I've replaced my fuel filter and at a test of 80mph, I got no misfire detection.

My theory is that the injectors just weren't getting enough fuel at around 70mph or so due to a dirty filter.

Seems to run a little better though, so I'm guessing that even if it isn't the problem (as in the problem still exists but I didn't have it happen again yet).

Cost me about $8 US for the new fuel filter.

exist3nce · Post by **exist3nce** » Thu Aug 24, 2006 12:48 am

JohnnyC wrote:Well... I've replaced my fuel filter and at a test of 80mph, I got no misfire detection.

My theory is that the injectors just weren't getting enough fuel at around 70mph or so due to a dirty filter.

Seems to run a little better though, so I'm guessing that even if it isn't the problem (as in the problem still exists but I didn't have it happen again yet).

Cost me about $8 US for the new fuel filter.

nice, where did you buy the filter?

daewoomofo · Post by **daewoomofo** » Thu Aug 24, 2006 2:01 am

i got mine at autozone. about the same price

JohnnyC · Post by **JohnnyC** » Thu Aug 24, 2006 4:20 am

I got mine at Autozone too... those clips are a pain in the butt...

daewoomofo · Post by **daewoomofo** » Thu Aug 24, 2006 10:20 am

did you use the door pannel removel tool, as some one recently sugguested?