Remove the oil pressure switch and install an oil pressure gauge,, this will provide a direct reading of the oil pressure.
Have you considered the vibration is caused by a miss fire ?
Have you considered the vibration is caused by a miss fire ?
How to measure oil pressure? Faulty oil pump? Cold start vibration
Hi,
I'm experiencing vibration on cold start.
I have replaced the chains and belt tensioners so the vibration could be because there's not enough oil pressure. This in return could be due to a faulty oil pump, or carbon build up on the oil system.
Do you know of a way to measure oil pressure? Do you know of a way to detect a faulty oil pump?
Thank you in advance for your time.
I'm experiencing vibration on cold start.
I have replaced the chains and belt tensioners so the vibration could be because there's not enough oil pressure. This in return could be due to a faulty oil pump, or carbon build up on the oil system.
Do you know of a way to measure oil pressure? Do you know of a way to detect a faulty oil pump?
Thank you in advance for your time.
1 - 14 of 14 Posts
Thank you @leo42.2875Remove the oil pressure switch and install an oil pressure gauge,, this will provide a direct reading of the oil pressure.
Have you considered the vibration is caused by a miss fire ?
I'm not reading any misfires in my OBD reader.
Remove the oil pressure switch and install an oil pressure gauge,, this will provide a direct reading of the oil pressure.
Have you considered the vibration is caused by a miss fire ?
@leo42.2875
How complex is to "remove the oil pressure switch and install an oil pressure gauge" in the 3.3L V6 engine?
Just because your reader does not read a code, there may still be miss fires, they may not fulfill the ECU requirements..
Unscrew the sender and screw in the oil fitting. If this is beyond you skill level, seek a mechanic or friend..
Unscrew the sender and screw in the oil fitting. If this is beyond you skill level, seek a mechanic or friend..
How would you run the engine with the intake manifold removed? If that's possible it must be beyond my skill level..............Your "one size fits all" style approach to troubleshooting does not always apply. Just sayin'Just because your reader does not read a code, there may still be miss fires, they may not fulfill the ECU requirements..
Unscrew the sender and screw in the oil fitting. If this is beyond you skill level, seek a mechanic or friend..
When did I ever suggest you running the engine without the intake manifold ?How would you run the engine with the intake manifold removed? If that's possible it must be beyond my skill level..............Your "one size fits all" style approach to troubleshooting does not always apply. Just sayin'
You must be delusional.. JUST SAYING !
OK back to your original problem. I'm thinking on a cold startup your oil pressure s/b higher than when engine is warmed up. As an example my Camaro runs 40 lbs normally but reads 70 lbs when cold. Perhaps Kia/Hyundai have a secrete way to check oil pressure, but it's not published to the general public, and I can't find anything in the service manual, never seen a published spec on pressure.
Unfortunately rough when cold could be various things. Stuck throttle body, dirty injector, a sticky variable cam solenoid, stuck variable cam valve, high voltage (coil/plug) problem. How long does it run rough, should start up at over 1000 RPM when it's cold, throttle down slowly in a few mins to 525-550. Does the rough go away then ? Or does it have to drive till it smooths out. Could you verify that misfire history for all 6 cylinders is not incrementing. The history counts have to increment to a specific number prior over a specific time prior actual misfire indication. They will give you a good indication of each cylinders performance.
Why were the timing chains and tensioners replaced ? I assume as complex as it is, you verified the correct timing setup prior to re-assembly.
Unfortunately rough when cold could be various things. Stuck throttle body, dirty injector, a sticky variable cam solenoid, stuck variable cam valve, high voltage (coil/plug) problem. How long does it run rough, should start up at over 1000 RPM when it's cold, throttle down slowly in a few mins to 525-550. Does the rough go away then ? Or does it have to drive till it smooths out. Could you verify that misfire history for all 6 cylinders is not incrementing. The history counts have to increment to a specific number prior over a specific time prior actual misfire indication. They will give you a good indication of each cylinders performance.
Why were the timing chains and tensioners replaced ? I assume as complex as it is, you verified the correct timing setup prior to re-assembly.
Thank you @bobdec for giving it some serious thought.
We replaced the tensioners 2 weeks ago. We detected the problem because the engine was making noises on cold start. I took the car to Kia who diagnosed the problem.
During the operation of replacing the tensioners, it was detected that there was a lot of carbon build up in the oil pan. This could be because the previous owner didn't replace the oil on the appropriate interval, which could have been the reason for the tensioners problem in the first place.
Nonetheless, after the replacement, during the first minute or so (maybe even less) there's a vibration.
We used a oil cleaner on the 24th of March in the hopes to see some dirtier oil.
I will upload a video.
We replaced the tensioners 2 weeks ago. We detected the problem because the engine was making noises on cold start. I took the car to Kia who diagnosed the problem.
During the operation of replacing the tensioners, it was detected that there was a lot of carbon build up in the oil pan. This could be because the previous owner didn't replace the oil on the appropriate interval, which could have been the reason for the tensioners problem in the first place.
Nonetheless, after the replacement, during the first minute or so (maybe even less) there's a vibration.
We used a oil cleaner on the 24th of March in the hopes to see some dirtier oil.
I will upload a video.
Oil condition is critical to correct operation of the CVVT (Continuously Variable Valve Timing) system. The actuator valves/ solenoids (one each cam) have oil screen filters and the actual cam actuators have narrow oil ports that control advance or retard of the 4 cams.. High quality oil $$ is the cheapest insurance you can buy for these small high output engines.the previous owner didn't replace the oil on the appropriate interval
Since the car is basically running ok, I would follow your actions to get the oil situation cleaned up and see how things go after a couple hundred miles.
Hi,
Since my last post I have change the oil filter to check whether the oil cleaner was catching up when carbon build up. It seems to be clean. The filter had been replaced during the procedure to replace the tensioners. I have also uploaded a couple of videos with the sound/vibration the engine makes on a cold start.
Thank you in advance.
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Since my last post I have change the oil filter to check whether the oil cleaner was catching up when carbon build up. It seems to be clean. The filter had been replaced during the procedure to replace the tensioners. I have also uploaded a couple of videos with the sound/vibration the engine makes on a cold start.
- sound -
- vibration -
Thank you in advance.
For me having two different ones. It doesn't seem excessive but noise more like lifters chattering which shouldn't last more than a few seconds if oil starved. Type and quality of oil used is important and 5W30 is what these all are living on. If the engine has sludge it maybe making it worst now.
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