1JZ MS3X popping noise at idle
Moderators: jsmcortina, muythaibxr
1JZ MS3X popping noise at idle
as title says my 1jz is popping at idle, and afr and rpms swings around at same time as the popping. but it revs fine and runs fine. MS3X running on a 2jz base map (not tune yet), 1jz with a single turbo 6262 T3, 800cc injectors, GM LS2 Coils, Quantum 340lhp fuel pump, Spec Stage 3 clutch 6 pucks, R154 gearbox, 14point7 Spartan O2 sensor, im using the MAP sensor from the squirt. the popping occurred also with the stock ecu. any help will be appreciated.
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- Super MS/Extra'er
- Posts: 1986
- Joined: Sat Jul 22, 2006 8:02 pm
- Location: Eureka, NV USA
- Contact:
Re: 1JZ MS3X popping noise at idle
If it occurred with the stock ecu I am inclined to suspect a mechanical issue.
Ken
Ken
1979 Corvette - 383 CID SBC w/ Holley Pro-Jection 900 CFM TBI, 4-85 lb lo-z injectors & Walbro 255 pump
MS2 v3 w/extra 3.4.2 Release
36-1, Delphi LS2/7 coils in wasted spark, driven by v2.0 logic board from JBPerformance
Spartan Lambda Sensor from 14point7
TinyIOX from JBPerformance
MS2 v3 w/extra 3.4.2 Release
36-1, Delphi LS2/7 coils in wasted spark, driven by v2.0 logic board from JBPerformance
Spartan Lambda Sensor from 14point7
TinyIOX from JBPerformance
Re: 1JZ MS3X popping noise at idle
I know im not burning oil or loosing coolant. what mechanically could be?
-
- Super MS/Extra'er
- Posts: 1986
- Joined: Sat Jul 22, 2006 8:02 pm
- Location: Eureka, NV USA
- Contact:
Re: 1JZ MS3X popping noise at idle
Valve clearance too tight is one that comes to mind........... Can you tell exactly where is the 'popping' is coming from? (ie. intake, exhaust......)1jzTaco wrote:I know im not burning oil or loosing coolant. what mechanically could be?
Ken
1979 Corvette - 383 CID SBC w/ Holley Pro-Jection 900 CFM TBI, 4-85 lb lo-z injectors & Walbro 255 pump
MS2 v3 w/extra 3.4.2 Release
36-1, Delphi LS2/7 coils in wasted spark, driven by v2.0 logic board from JBPerformance
Spartan Lambda Sensor from 14point7
TinyIOX from JBPerformance
MS2 v3 w/extra 3.4.2 Release
36-1, Delphi LS2/7 coils in wasted spark, driven by v2.0 logic board from JBPerformance
Spartan Lambda Sensor from 14point7
TinyIOX from JBPerformance
Re: 1JZ MS3X popping noise at idle
Muffler
Sent from my SM-N950U using Tapatalk
Sent from my SM-N950U using Tapatalk
Re: 1JZ MS3X popping noise at idle
Popping usually mean misfires, check those plugs, maybe too short gaps, AFR, etc
Re: 1JZ MS3X popping noise at idle
This is likely plug gap. What are yours gapped to? Also, too MUCH timing can cause this as well.
Re: 1JZ MS3X popping noise at idle
gapped .032shaodome wrote:This is likely plug gap. What are yours gapped to? Also, too MUCH timing can cause this as well.