What did you do with your Z today V (ON TOPIC DISCUSSION ONLY)

abm89 · 11-09-2020, 02:27 PM

Welp, Smoke test saw leaking out of the passenger side exhaust, something is up with that side of the valve-train or cylinders. I did notice that I've always had a light oil haze on one side vs the other in the past when cleaning the lower manifold so that may not be the leaning issue (I'm never burning a ton of oil between changes). He's gonna check the fuel pressure to see if that may be it.

Rusty · 11-09-2020, 02:41 PM

Quote:

Originally Posted by abm89

Welp, Smoke test saw leaking out of the passenger side exhaust, something is up with that side of the valve-train or cylinders. I did notice that I've always had a light oil haze on one side vs the other in the past when cleaning the lower manifold so that may not be the leaning issue (I'm never burning a ton of oil between changes). He's gonna check the fuel pressure to see if that may be it.

When they tested it. The engine may have one cylinder at valve over lap. Where the intake and exhaust valves are both open. Crank the engine over and do it again.

abm89 · 11-09-2020, 02:44 PM

Quote:

Originally Posted by Rusty

When they tested it. The engine may have one cylinder at valve over lap. Where the intake and exhaust valves are both open. Crank the engine over and do it again.

That's what i'm thinking. with the frequency of my oil change intervals (and checking the dipstick on fillups, i doubt this IS a problem. I'm gonna let him test the fuel pressure and FPD and get back to me. we did confirm that my connections and hoses are all not leaking so that is a good thing. If the fuel pressure comes back ok, ill look into getting the injectors cleaned/replaced. Pulling the plugs should tell me which ones are acting up, unless it's all of them lol.

abm89 · 11-12-2020, 12:38 PM

Talked to the shop today. It sounds like I just need a retune. Fuel pressure was tested at 55 psi, so Kevin is gonna swap out my motor mounts and I'll pick it up sometime next week.

I'm just glad nothing catastrophic is wrong with the car. I'll probably throw some new injectors in and get it retuned.

Leingod · 11-13-2020, 07:38 AM

Looks like something Zoren would try to use. He's the only one who'd say quack.

abm89 · 11-18-2020, 02:09 PM

Got the car back from the shop yesterday. New motor mounts feel good but im still trying to figure out what's up with my car. I'm probably going to pull the injectors and get them bench tested, and at the same time, I'll pull the spark plugs and check them. I changed them out at around 80k i think?

abm89 · 11-19-2020, 09:54 AM

New plan: after speaking with my tuner, we're gonna have some fun and get some higher capacity injectors *evil laugh*

Lvcky69 · 11-23-2020, 05:52 PM

I think it was worth the hassle. Also took her for a ride. haven't driven it for weeks

Quicksilvers · 11-24-2020, 06:59 AM

Pulled my fuel injectors today and tested them. Found two faulty injectors in cylinders two and four. I will be ordering a brand new set of fuel injectors for build. Enjoying working on my Z!

abm89 · 11-24-2020, 10:03 AM

Quote:

Originally Posted by Quicksilvers

Pulled my fuel injectors today and tested them. Found two faulty injectors in cylinders two and four. I will be ordering a brand new set of fuel injectors for build. Enjoying working on my Z!

I'm going to still test my stock injectors whenever I put the new higher capacity ones in. I'm curious to know what kind of shape they are in.

Quicksilvers · 11-25-2020, 06:16 AM

Quote:

Originally Posted by abm89

I'm going to still test my stock injectors whenever I put the new higher capacity ones in. I'm curious to know what kind of shape they are in.

Depends I found out for myself before with other vehicles I have owned in the past it’s your luck of the draw with fuel injector life. Been using top tier gasoline as recommended by Nissan about 95% of the time. I had a slight hesitation or “Hiccup at idle”. Injectors in cylinders two and four were not making a consistent
pulsing noise when diagnosed. O rings on injectors in cylinders two,four,and five looked bad. In my experience I found using Chevron fuel injector cleaner works at keeping your fuel injectors clean and fuel spray pattern correct. I recommend using fuel injector cleaner and fuel system cleaner it will help. The stock fuel injectors are nice to have as spares on hand. I got these fuel injectors yesterday!! Will be using them for my rebuild.

Spooler · 11-25-2020, 08:14 AM

Quote:

Originally Posted by Quicksilvers

In my experience I found using Chevron fuel injector cleaner works at keeping your fuel injectors clean and fuel spray pattern correct. I recommend using fuel injector cleaner and fuel system cleaner it will help. The stock fuel injectors are nice to have as spares on hand. I got these fuel injectors yesterday!! Will be using them for my rebuild.

I told you that stuff doesn't work. Chevron is one of the worst top tier fuels out there.

jchammond · 12-07-2020, 02:00 AM

T-180

Rusty · 12-07-2020, 03:32 AM

Quote:

Originally Posted by jchammond

T-180

Wrong thread.

BUSTED!

jchammond · 12-07-2020, 03:38 AM

Quote:

Originally Posted by Rusty

Wrong thread.

BUSTED!

Oops

11-09-2020, 02:27 PM	#1 (permalink)
abm89 A True Z Fanatic Join Date: Feb 2013 Location: Austin, Texas Posts: 1,387 Drives: 11 370Z \| 24 EL450 Rep Power: 64764	Welp, Smoke test saw leaking out of the passenger side exhaust, something is up with that side of the valve-train or cylinders. I did notice that I've always had a light oil haze on one side vs the other in the past when cleaning the lower manifold so that may not be the leaning issue (I'm never burning a ton of oil between changes). He's gonna check the fuel pressure to see if that may be it. __________________ Complete Parts List: https://github.com/abm89/ztouge-build

11-12-2020, 12:38 PM	#4 (permalink)
abm89 A True Z Fanatic Join Date: Feb 2013 Location: Austin, Texas Posts: 1,387 Drives: 11 370Z \| 24 EL450 Rep Power: 64764	Talked to the shop today. It sounds like I just need a retune. Fuel pressure was tested at 55 psi, so Kevin is gonna swap out my motor mounts and I'll pick it up sometime next week. I'm just glad nothing catastrophic is wrong with the car. I'll probably throw some new injectors in and get it retuned. __________________ Complete Parts List: https://github.com/abm89/ztouge-build

11-13-2020, 07:38 AM	#5 (permalink)
Leingod A True Z Fanatic Join Date: Mar 2015 Location: Some Place Cold Posts: 16,060 Drives: In Circles Rep Power: 2684397	Looks like something Zoren would try to use. He's the only one who'd say quack. __________________ I AM FLOOF! SOMEBODY FLOOF MY HORN!! ALL HAIL THE FLOOF!!I JUST FLOOFED ON THE FLOOR

11-18-2020, 02:09 PM	#6 (permalink)
abm89 A True Z Fanatic Join Date: Feb 2013 Location: Austin, Texas Posts: 1,387 Drives: 11 370Z \| 24 EL450 Rep Power: 64764	Got the car back from the shop yesterday. New motor mounts feel good but im still trying to figure out what's up with my car. I'm probably going to pull the injectors and get them bench tested, and at the same time, I'll pull the spark plugs and check them. I changed them out at around 80k i think? __________________ Complete Parts List: https://github.com/abm89/ztouge-build

11-19-2020, 09:54 AM	#7 (permalink)
abm89 A True Z Fanatic Join Date: Feb 2013 Location: Austin, Texas Posts: 1,387 Drives: 11 370Z \| 24 EL450 Rep Power: 64764	New plan: after speaking with my tuner, we're gonna have some fun and get some higher capacity injectors evil laugh __________________ Complete Parts List: https://github.com/abm89/ztouge-build

11-24-2020, 06:59 AM	#9 (permalink)
Quicksilvers A True Z Fanatic Join Date: May 2017 Location: Atlanta, GA Posts: 2,038 Drives: 2017 370z Rep Power: 25464	Pulled my fuel injectors today and tested them. Found two faulty injectors in cylinders two and four. I will be ordering a brand new set of fuel injectors for build. Enjoying working on my Z! __________________ Mr. Clean

12-07-2020, 02:00 AM	#13 (permalink)
jchammond A True Z Fanatic Join Date: Nov 2014 Location: South Carolina Age: 58 Posts: 15,204 Drives: 13’ 370Z TS 7A/T Rep Power: 2684395	T-180 __________________ MazWorx built long block \| FI-TT-100 Stage 2.75 \| IPT built 7A/T http://www.the370z.com/members-370z-...s-musings.html

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