Another direct injection thread! Yay! - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

frscory · 12-23-2018, 03:26 PM

Hello my fellow 86 brothers and sisters, i hate to do it to you but i bring you another direct injector thread... so i have a greddy turbo kit and I have had it on for a little over 15k miles. No problems at all!! But recently i started having bogging and hesitation around 3k rpm and it stutters and it isnt really happy. Anything above 3k rpm it is just fine. So i decided to pull out the direct injectors but now i feel i have wasted my time! Here are some pictures of what they look like and i just dont know if its bad or good. They all look pretty good to me except the passenger side aft injector. (Should be first picture) anything knowledge or advice would be greatly appreciated thank you!

sly · 12-23-2018, 05:50 PM

Are any of the teflon seals cracked? Any deformation? Now that you have them out, maybe you should get them cleaned and flow tested on a bench.

frscory · 12-23-2018, 06:58 PM

Quote:

Originally Posted by sly

Are any of the teflon seals cracked? Any deformation? Now that you have them out, maybe you should get them cleaned and flow tested on a bench.

No, none of them are cracked or split. I can see if there is a flow tester near me! Thank you!

Ultramaroon · 12-23-2018, 08:15 PM

Besides the stutter at 3K, was there anything else that pointed you to direct injectors? Seems like quite a leap.

frscory · 12-23-2018, 11:55 PM

Quote:

Originally Posted by Ultramaroon

Besides the stutter at 3K, was there anything else that pointed you to direct injectors? Seems like quite a leap.

Well when i was getting a tune from a remote tuner he said i was having knock at lower rpms and anything above 3k he said was fine. He then told me it was signs of direct injection failure. I replaced all coils and my spark plugs were fairly new.

Ultramaroon · 12-24-2018, 12:04 AM

Quote:

Originally Posted by frscory

Well when i was getting a tune from a remote tuner he said i was having knock at lower rpms and anything above 3k he said was fine. He then told me it was signs of direct injection failure. I replaced all coils and my spark plugs were fairly new.

Hmmm... :/

frscory · 12-27-2018, 02:03 PM

Update: I had the injectors flow tested and one of them was flowing 10% less than all the other ones. So i guess its time to buy a new injector!

MCTeeJ · 12-27-2018, 03:47 PM

http://www.ft86club.com/forums/showp...5&postcount=27

Do yourself a favor and replace the entire set. I had the same brown scorch marks on my Direct Injector.

12-23-2018, 03:26 PM	#1
frscory Senior Member Join Date: May 2017 Drives: 2013 scion frs firestorm red Location: Vacaville, CA Posts: 111 Thanks: 15 Thanked 8 Times in 8 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Another direct injection thread! Yay! Hello my fellow 86 brothers and sisters, i hate to do it to you but i bring you another direct injector thread... so i have a greddy turbo kit and I have had it on for a little over 15k miles. No problems at all!! But recently i started having bogging and hesitation around 3k rpm and it stutters and it isnt really happy. Anything above 3k rpm it is just fine. So i decided to pull out the direct injectors but now i feel i have wasted my time! Here are some pictures of what they look like and i just dont know if its bad or good. They all look pretty good to me except the passenger side aft injector. (Should be first picture) anything knowledge or advice would be greatly appreciated thank you! Attached Images

12-23-2018, 08:15 PM	#4
Ultramaroon 義理チョコ Join Date: Sep 2014 Drives: a 13 e8h frs Location: vantucky, wa Posts: 31,866 Thanks: 52,126 Thanked 36,517 Times in 18,919 Posts Mentioned: 1106 Post(s) Tagged: 9 Thread(s)	Besides the stutter at 3K, was there anything else that pointed you to direct injectors? Seems like quite a leap. __________________ service manuals

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12-23-2018, 05:50 PM	#2
sly Senior Member Join Date: Dec 2015 Drives: 2016 Cosworth 2.2 BRZ Location: TN Posts: 302 Thanks: 81 Thanked 185 Times in 112 Posts Mentioned: 10 Post(s) Tagged: 0 Thread(s)	Are any of the teflon seals cracked? Any deformation? Now that you have them out, maybe you should get them cleaned and flow tested on a bench.

12-27-2018, 02:03 PM	#7
frscory Senior Member Join Date: May 2017 Drives: 2013 scion frs firestorm red Location: Vacaville, CA Posts: 111 Thanks: 15 Thanked 8 Times in 8 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Update: I had the injectors flow tested and one of them was flowing 10% less than all the other ones. So i guess its time to buy a new injector!

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