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Your stock iridium plugs should be good for 100K. Changing the rear bank plugs is big job as most recommend removing the intake manifold. Unless you are sure they are contributing to your perceived poor gas mileage, I wouldn't change them until due.
Your stock iridium plugs should be good for 100K. Changing the rear bank plugs is big job as most recommend removing the intake manifold. Unless you are sure they are contributing to your perceived poor gas mileage, I wouldn't change them until due.
I totally agree,
Any ideas what is making the bank 2 long term fuel trim seem like it's high?
Sorry, I didn't read all the comments so I may be repeating information already suggested.
I'm getting about 13l/100 KM.
I live in Canada (Ontario) and the temperatures here are around 0 C to -10 C (Depending on the time of the day). 225-55 R16 Bridgestone Blizzak (Snow tires).
The car was purchased at 130,000 KMs (Currently at 166,000 KMs). Here is what I've done so far:
- Oil change every 6,000 to 7,000 KMs with Penzoil Ultra Platinum 5W-30 with OEM oil filters.
- Replaced engine air filter with K & N
- All spart plugs replaced with OEM spark plugs
- Tranmission fluid drain and fill
- Brake fluid flush
- Coolant flush
- Power steering fluid 'drain' and fill
- Cabin filter changed
- Wheel alignment
- I use 91 Octane premium petrol (Your octane ratings may differ)
Majority of driving is in stop and go traffic. I try to keep my RPMS below 3,000 and gentle on the throttle, not so much that I'm constantly thinking about it.
Sorry, I didn't read all the comments so I may be repeating information already suggested.
I'm getting about 13l/100 KM.
I live in Canada (Ontario) and the temperatures here are around 0 C to -10 C (Depending on the time of the day). 225-55 R16 Bridgestone Blizzak (Snow tires).
The car was purchased at 130,000 KMs (Currently at 166,000 KMs). Here is what I've done so far:
- Oil change every 6,000 to 7,000 KMs with Penzoil Ultra Platinum 5W-30 with OEM oil filters.
- Replaced engine air filter with K & N
- All spart plugs replaced with OEM spark plugs
- Tranmission fluid drain and fill
- Brake fluid flush
- Coolant flush
- Power steering fluid 'drain' and fill
- Cabin filter changed
- Wheel alignment
- I use 91 Octane premium petrol (Your octane ratings may differ)
Majority of driving is in stop and go traffic. I try to keep my RPMS below 3,000 and gentle on the throttle, not so much that I'm constantly thinking about it.
Highway average is 9l/100 KM
Hope this helps!
This would definitely help, I am putting the parts together, next service is by Feb 2021 or 5000miles which comes first.
K&N allows for greater air flow at the expense of filtering less particles. So, pick your poison...better gas mileage with more engine wear or worse mileage with less engine wear. Project Farm (YouTube site) proved Wix and Purolator air filters were best at removing particles, which is the purpose of an air filter.
Project Farm tested oil too and found the recommended Penzoil Ultra Platinum the best.
Again, I don't recommend replacing your plugs until they are due,
Although I knew K & N filter allows more airflow (and thus less filteration), I switched because of the reusability of the foam filter vs OEM paper filter. The 'extra HP' is negligible, though it does feel more torque-ie. K & N filters potentially causing more engine wear is hotly debated on the internet.
Now I'm questioning installing K & N filter, I rather deal with changing paperfilter than compromise the health of an old engine. I'll get a second opinion from my mechanic, but switching back to OEM paper filter now.
Although I knew K & N filter allows more airflow (and thus less filteration), I switched because of the reusability of the foam filter vs OEM paper filter. The 'extra HP' is negligible, though it does feel more torque-ie. K & N filters potentially causing more engine wear is hotly debated on the internet.
Now I'm questioning installing K & N filter, I rather deal with changing paperfilter than compromise the health of an old engine. I'll get a second opinion from my mechanic, but switching back to OEM paper filter now.
Thanks for bringing that up!
I think the paper filter that does the filtration is better from the analysis done ,
I really don't know the fuel spec, I stay in the tropics , making arrangements for the plugs already from Amazon, iridium denso sparks , I also checked my fuel trims and got these few screen shots, there was a comment here about total fuel tr while driving per cylinder to total about 5% per bank , kindly review mine please
your long term fuel trim plus short term shouldn't be more than 10%. Yours is fine but not quite ideal. Given that you're using K&N fliter it could cause your mass air flow sensor to get dirty. Just replace the filter with a normal filter and clean the mass air flow sensor with proper spray and watch those numbers for a week. If you didn't see improvements you should change your o2 sensors. I live in Alberta Canada and Im getting 9.4 L/100km in the city and 7.6 L/100km in highway. 08 es350. 177000 km.
your long term fuel trim plus short term shouldn't be more than 10%. Yours is fine but not quite ideal. Given that you're using K&N fliter it could cause your mass air flow sensor to get dirty. Just replace the filter with a normal filter and clean the mass air flow sensor with proper spray and watch those numbers for a week. If you didn't see improvements you should change your o2 sensors. I live in Alberta Canada and Im getting 9.4 L/100km in the city and 7.6 L/100km in highway. 08 es350. 177000 km.
1. I do not use K&N filter , it was recommended by someone on the forum for me, I use the normal filter element. And I am making arrangements to change that out, would also clean out the MAF sensor as suggested (any cleaners suggestions?)
2. About the O2 sensors, I do not have any check light on for these and live data shows the voltage reads, assuming I will change the O2 sensors, which of them Sensor 1's for both Bank 1 and 2 ?
1. I do not use K&N filter , it was recommended by someone on the forum for me, I use the normal filter element. And I am making arrangements to change that out, would also clean out the MAF sensor as suggested (any cleaners suggestions?)
2. About the O2 sensors, I do not have any check light on for these and live data shows the voltage reads, assuming I will change the O2 sensors, which of them Sensor 1's for both Bank 1 and 2 ?
Would most appreciate your response
check your fuel trims a idle, at 2000 rpms and also while driving. if your scan tool can log, then log them while driving. maybe something will pop up that shows you are running rich at certain times for an extended period.
I am learning about fuel trims - rather than repeat what I've learned, you can read over here. including how to testing your O2 sensors. there are 4 2 before the cats, and 2 after I think. the 2 before are the air flow 02 sensors (wide band) and the 2 after I think are narrow band.
one thing you can easily do is pull your a front spark plug and check their condition. just make sure you dont over torque putting them back.
11-27-20, 08:46 AM
