DIY guide: IS250 Spark Plug change
05-22-16, 06:00 PM
#61
Driver School Candidate
Join Date: Dec 2015
Location: SC
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Changed all 6 plugs (and manifold gaskets) in my 2007 IS250 this weekend. Many many thanks to Cklein85 for his instructional video! The job took me 2.5 hours. It was not difficult, just a lot of disassembly of hoses and connectors that you need to remember where they all go!
My plugs had 81K miles on them and looked very worn, with most having the lower "tip" 90% burned away.
Thanks again for all the great Instructions and Videos!
My plugs had 81K miles on them and looked very worn, with most having the lower "tip" 90% burned away.
Thanks again for all the great Instructions and Videos!
08-03-16, 10:04 AM
#62
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Join Date: Aug 2016
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No power
Changed my plugs using this guide, which saved me tons of cash, thank you. But I have a problem now, my check engine light, traction control, and vsc are all on and I have no power. Can someone give me some advise?
08-08-16, 05:55 AM
#63
Driver School Candidate
Sounds like you have reconnected the battery in order to see those items on the dash. I assume when you attempt to crank you hear clicks maybe the first time and it doesn't turn over. Then you try again and likely nothing. Depending how long you spent doing the install with the car stationary, or simply how long you had the battery disconnected during install, you likely fully discharged the battery. Charge the battery first.
If that doesn't work send me an update.
You noted 2006 in your handle, are you still on the original battery?
If that doesn't work send me an update.
You noted 2006 in your handle, are you still on the original battery?
Last edited by hypnotized; 08-08-16 at 05:57 AM. Reason: Forgot a key note
10-15-16, 09:14 PM
#64
To those interested I created a video guide to doing the is250 spark plug change and it is on YouTube:
https://www.youtube.com/watch?v=J0kHjkBQNMs
https://www.youtube.com/watch?v=J0kHjkBQNMs
12-29-18, 03:40 PM
#65
Intermediate
First offer Prankster amazing job and heck of an effort.
I will further elaborate on your guide by providing details included in the 2007 Lexus Repair Manual for IS 250 & IS 350 Volume 2 Pub. No. RM03D0U2. This is the repair manual that Lexus actually produces for the IS. Below you will find torque specs, replacement spark plug details, and spark plug gap info. I would advise members to not deviate from these “official / OEM” specs.
Replacement Spark Plugs
OEM Manufacturer: Denso
OEM Product: FK20HBR11
Spark Plug torque: 25 N*m (254 kgf*cm, 18ft. *Lbf)
Spark Plug Gap listed on table below (Per Chilton’s and confirmed in Lexus Repair Manual)
Year Engine ID/VIN Engine Displacement Liters (cc) Spark Plug Gap (in.) Fuel Pump (psi) Ignition Timing (deg.) Idle Speed (rpm) Valve Clearance
Intake Exhaust
2006 4GR-FSE 2.5 (2500) 0.039- 28-85 8-12B ③ 650- HYD HYD
0.043 750
3MZ-FE 3.3 (3311) 0.039- 44-50 8-12B ③ 630- 0.006- 0.010-
0.043 730 0.010 0.014
2GR-FSE 3.5 (3456) 0.039- 28-85 8-12B ③ 600- HYD HYD
0.043 700
3UZ-FE 4.3 (4293) 0.039- 44-50 8-12B 700- 0.006- 0.010-
0.043 800 0.010 0.014
Ignition coil bolt torque: 10 N*m (102 kgf*cm, 7 ft.*lbf)
Install Intake Air Surge Tank
1. Install a new gasket to the intake air surge tank
2. Using a 5 mm hexagon socket wrench, install the 6 bolts.
(A) Torque : Bolts except A (lone bolt located on the back of the intake on the driver’s side)18 N*m (184 kgf*cm, 13 ft.*lbf)
3. Install the bolt and 2 nuts to the intake air surge tank.
1. Torque: Bolt A: 21 N*m (214 kgf*cm, 15 ft.*lbf)
2. Torque: Nut 16 N*m (163 kgf*cm, 12 ft.*lbf)
4. Install the surge tank stay to the intake surge tank.
1. Torque: 21 N*m (214 kgf*cm, 15 ft.*lbf)
5. Connect the water hose joint with the bolt.
1. Torque: 10 N*m (102 kgf*cm, 7ft. *lbf)
6. Connect the ventilation hose to the intake air surge tank.
7. Connect the wire harness and hose to the intake air surge tank.
8. Connect the purge VSV to the intake air surge tank.
(A) Torque: 18 N*m (184 kgf*cm, 13 ft.*lbf)
9. Connect the vacuum hose to the intake air surge tank.
I will further elaborate on your guide by providing details included in the 2007 Lexus Repair Manual for IS 250 & IS 350 Volume 2 Pub. No. RM03D0U2. This is the repair manual that Lexus actually produces for the IS. Below you will find torque specs, replacement spark plug details, and spark plug gap info. I would advise members to not deviate from these “official / OEM” specs.
Replacement Spark Plugs
OEM Manufacturer: Denso
OEM Product: FK20HBR11
Spark Plug torque: 25 N*m (254 kgf*cm, 18ft. *Lbf)
Spark Plug Gap listed on table below (Per Chilton’s and confirmed in Lexus Repair Manual)
Year Engine ID/VIN Engine Displacement Liters (cc) Spark Plug Gap (in.) Fuel Pump (psi) Ignition Timing (deg.) Idle Speed (rpm) Valve Clearance
Intake Exhaust
2006 4GR-FSE 2.5 (2500) 0.039- 28-85 8-12B ③ 650- HYD HYD
0.043 750
3MZ-FE 3.3 (3311) 0.039- 44-50 8-12B ③ 630- 0.006- 0.010-
0.043 730 0.010 0.014
2GR-FSE 3.5 (3456) 0.039- 28-85 8-12B ③ 600- HYD HYD
0.043 700
3UZ-FE 4.3 (4293) 0.039- 44-50 8-12B 700- 0.006- 0.010-
0.043 800 0.010 0.014
Ignition coil bolt torque: 10 N*m (102 kgf*cm, 7 ft.*lbf)
Install Intake Air Surge Tank
1. Install a new gasket to the intake air surge tank
2. Using a 5 mm hexagon socket wrench, install the 6 bolts.
(A) Torque : Bolts except A (lone bolt located on the back of the intake on the driver’s side)18 N*m (184 kgf*cm, 13 ft.*lbf)
3. Install the bolt and 2 nuts to the intake air surge tank.
1. Torque: Bolt A: 21 N*m (214 kgf*cm, 15 ft.*lbf)
2. Torque: Nut 16 N*m (163 kgf*cm, 12 ft.*lbf)
4. Install the surge tank stay to the intake surge tank.
1. Torque: 21 N*m (214 kgf*cm, 15 ft.*lbf)
5. Connect the water hose joint with the bolt.
1. Torque: 10 N*m (102 kgf*cm, 7ft. *lbf)
6. Connect the ventilation hose to the intake air surge tank.
7. Connect the wire harness and hose to the intake air surge tank.
8. Connect the purge VSV to the intake air surge tank.
(A) Torque: 18 N*m (184 kgf*cm, 13 ft.*lbf)
9. Connect the vacuum hose to the intake air surge tank.
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bryceis250 (12-30-18)
12-30-18, 08:37 PM
#67
Intermediate
hat this single green wire that plugs into the top of the oil filter housing? oil temp? what does it do? it got caught by the shredded belt and torn to pieces/
on the idle pulley, is there a washer on the inside and outside? is it a special washer? i put a regular washer there like a month ago and the pulley backed all the way out and there was no washer there. i keep having this problem. today i used lock tight and torque @ 28 ft.pds
thanks man
12-30-18, 09:02 PM
#68
I have denso plugs. so for other plugs its .o43, but denso is .o38?
hat this single green wire that plugs into the top of the oil filter housing? oil temp? what does it do? it got caught by the shredded belt and torn to pieces/
on the idle pulley, is there a washer on the inside and outside? is it a special washer? i put a regular washer there like a month ago and the pulley backed all the way out and there was no washer there. i keep having this problem. today i used lock tight and torque @ 28 ft.pds
thanks man
hat this single green wire that plugs into the top of the oil filter housing? oil temp? what does it do? it got caught by the shredded belt and torn to pieces/
on the idle pulley, is there a washer on the inside and outside? is it a special washer? i put a regular washer there like a month ago and the pulley backed all the way out and there was no washer there. i keep having this problem. today i used lock tight and torque @ 28 ft.pds
thanks man
The green wire is probably the oil pressure switch on the oil filter housing.
Most idler pulleys should only have 1 washer on the front. As I could be wrong on the 2IS. If you have 2 washers 1 on the back side. Depending on the belt where it sits. It should sit pretty much dead on center on the idler pulley. If it's backing out you might not have the correct washer. If the washer is too large, and making contact with the bearing shield it's probably not spinning freely? The oem bolt, and washer should prevent it from making contact. It's what you call a racer wheel shim.
https://www.clublexus.com/forums/is-...rive-belt.html
Last edited by MikeFig82; 12-31-18 at 09:37 AM.
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bryceis250 (12-30-18)
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