What is this thing in the engine?

plato · 04-20-2020, 06:03 PM

What is it? It looks like it’s leaking and it smells like gas.

Spartan 1771 · 04-20-2020, 06:07 PM

I believe it's the fuel injection pressure regulator.

tvfreakazoid · 04-20-2020, 06:09 PM

Oh that engine bay needs a cleaning

I'll be in my bunk!

Spartan 1771 · 04-20-2020, 06:27 PM

I stand corrected, it the fuel pressure damper.

Spooler · 04-20-2020, 06:37 PM

Quote:

Originally Posted by Spartan 1771

I stand corrected, it the fuel pressure damper.

The dampers are on each rail. I am just about positive it is the fuel pressure regulator as you thought.

Spartan 1771 · 04-20-2020, 06:44 PM

I'm having a hard time finding it online specifically for the 370. Here is one for the 350. Looks to be the same as ours.

https://www.z1motorsports.com/fuel-d...BoCvHAQAvD_BwE

BettyZ · 04-20-2020, 07:24 PM

It's the damper. If it smells like gas that means it's leaking. And your car is now a car bomb.

Sent from my SM-G955U using Tapatalk

Spooler · 04-20-2020, 07:37 PM

Quote:

Originally Posted by Spartan 1771

I'm having a hard time finding it online specifically for the 370. Here is one for the 350. Looks to be the same as ours.

https://www.z1motorsports.com/fuel-d...BoCvHAQAvD_BwE

You may be right. Stock the regulator is in the tank at the pump. I guess we have 3 fuel dampers.

https://cj-motorsports.com/products/...-rails-vq37vhr

Gooch · 04-20-2020, 07:44 PM

Yep.. it’s just a damper. As Spooler said the regulator is in the fuel pump housing.

Rusty · 04-20-2020, 10:09 PM

Quote:

Originally Posted by BettyZ

It's the damper. If it smells like gas that means it's leaking. And your car is now a car bomb.

Sent from my SM-G955U using Tapatalk

There is about 54 psi of fuel right there. Replace it ASP. 54 psi of fuel sprays a long way.

SonicVQ · 04-21-2020, 08:08 AM

Before you loosen the two 10mm bolts, make sure to let the car sit for about 5 hours (overnight is best) for the fuel system pressure to bleed down to ~0 psi.

If you can't wait, wrap/cover it with a clean rag and expect a "pop" and a rush of gas for about 1-2 seconds.

Rusty · 04-21-2020, 08:12 AM

Quote:

Originally Posted by SonicVQ

Before you loosen the two 10mm bolts, make sure to let the car sit for about 5 hours (overnight is best) for the fuel system pressure to bleed down to ~0 psi.

If you can't wait, wrap/cover it with a clean rag and expect a "pop" and a rush of gas for about 1-2 seconds.

He doesn't have to wait. It's bleeding off soon as he shuts the engine off.

JLarson · 04-21-2020, 08:44 AM

Quote:

Originally Posted by Rusty

He doesn't have to wait. It's bleeding off soon as he shuts the engine off.

True, but I can tell you from personal experience, if you disconnect it immediately after turning the car off, you'll get a face full of fuel.

geeteezee · 04-21-2020, 08:58 AM

Pull the fuel pump fuse, crank the engine a couple times after it stalls.

SonicVQ · 04-21-2020, 04:52 PM

If the fuel system is working properly, after 20 minutes you will still have ~41 PSI.
After 75 minutes it is ~16 psi.

As mentioned, you can pull the fuel pump fuse, but it is a bit of a pain to get to.

Plus with a cool engine, it won't be HOT when you are right by the exhaust manifold trying to unclip the damper line.

04-20-2020, 06:03 PM	#1 (permalink)
plato Base Member Join Date: Nov 2010 Location: Los Angeles, CA Posts: 88 Drives: 2010 370Z 7AT Rep Power: 14	What is this thing in the engine? What is it? It looks like it’s leaking and it smells like gas. __________________ 2010 370Z Touring - Stillen CBE

04-20-2020, 06:07 PM	#2 (permalink)
Spartan 1771 A True Z Fanatic Join Date: Nov 2009 Location: Western Maryland Posts: 1,280 Drives: Wife crazy & 09 370Z Rep Power: 105453	I believe it's the fuel injection pressure regulator. Jayhovah, Ghostvette and wideglideleon like this. __________________ ~Rob -DD Air Guide, Stillen G3 CAIs, 63mm Throttle Bodies, Motordyne M370, Berk HFCs, FI TDX CBE (non-res, CF), Sprint booster v3, Ecutek Dyno Tuned, and the list goes on... Last edited by Spartan 1771; 04-20-2020 at 06:17 PM.

04-20-2020, 06:09 PM	#3 (permalink)
tvfreakazoid A True Z Fanatic Join Date: Jan 2009 Location: kommie kali Posts: 1,238 Drives: 2015 Audi S5; 6spd. Rep Power: 10324	Oh that engine bay needs a cleaning I'll be in my bunk! Spartan 1771 and ZontheRocks like this. __________________ Mudders milk

04-20-2020, 06:27 PM	#4 (permalink)
Spartan 1771 A True Z Fanatic Join Date: Nov 2009 Location: Western Maryland Posts: 1,280 Drives: Wife crazy & 09 370Z Rep Power: 105453	I stand corrected, it the fuel pressure damper. JARblue and Jayhovah like this. __________________ ~Rob -DD Air Guide, Stillen G3 CAIs, 63mm Throttle Bodies, Motordyne M370, Berk HFCs, FI TDX CBE (non-res, CF), Sprint booster v3, Ecutek Dyno Tuned, and the list goes on...

04-20-2020, 06:44 PM	#6 (permalink)
Spartan 1771 A True Z Fanatic Join Date: Nov 2009 Location: Western Maryland Posts: 1,280 Drives: Wife crazy & 09 370Z Rep Power: 105453	I'm having a hard time finding it online specifically for the 370. Here is one for the 350. Looks to be the same as ours. https://www.z1motorsports.com/fuel-d...BoCvHAQAvD_BwE __________________ ~Rob -DD Air Guide, Stillen G3 CAIs, 63mm Throttle Bodies, Motordyne M370, Berk HFCs, FI TDX CBE (non-res, CF), Sprint booster v3, Ecutek Dyno Tuned, and the list goes on...

04-20-2020, 07:24 PM	#7 (permalink)
BettyZ A True Z Fanatic Join Date: Aug 2018 Location: Chicagoland Age: 37 Posts: 5,261 Drives: A Garage Queen Rep Power: 2684370	It's the damper. If it smells like gas that means it's leaking. And your car is now a car bomb. Sent from my SM-G955U using Tapatalk JARblue, Rusty and wideglideleon like this. __________________ '14 MB Nismo \| Boost Lab 6870 1.32 AR 553 HP / 471 ft.-lbs. Betty Mods

04-20-2020, 07:44 PM	#9 (permalink)
Gooch Base Member Join Date: Nov 2016 Location: Washington State Posts: 66 Drives: 15 370z 6MT Nismo Rep Power: 8	Yep.. it’s just a damper. As Spooler said the regulator is in the fuel pump housing. __________________ '15 370z Nismo Tech 6MT Magnetic Black, V2 BP Kit 6467, Motordyne e370, ECUTEK\| '06 350z Touring 6MT Carbon Silver

04-21-2020, 08:08 AM	#11 (permalink)
SonicVQ Base Member Join Date: Jan 2016 Location: Ontario Posts: 230 Drives: G37 Sport Rep Power: 6720	Before you loosen the two 10mm bolts, make sure to let the car sit for about 5 hours (overnight is best) for the fuel system pressure to bleed down to ~0 psi. If you can't wait, wrap/cover it with a clean rag and expect a "pop" and a rush of gas for about 1-2 seconds.

04-21-2020, 08:58 AM	#14 (permalink)
geeteezee Base Member Join Date: Jun 2019 Location: Ontario Posts: 191 Drives: 19 370z Heritage EAC Rep Power: 3360	Pull the fuel pump fuse, crank the engine a couple times after it stalls. __________________

04-21-2020, 04:52 PM	#15 (permalink)
SonicVQ Base Member Join Date: Jan 2016 Location: Ontario Posts: 230 Drives: G37 Sport Rep Power: 6720	If the fuel system is working properly, after 20 minutes you will still have ~41 PSI. After 75 minutes it is ~16 psi. As mentioned, you can pull the fuel pump fuse, but it is a bit of a pain to get to. Plus with a cool engine, it won't be HOT when you are right by the exhaust manifold trying to unclip the damper line.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
It's a Z thing.	eyeteeguy	Nissan 370Z General Discussions	12	11-21-2016 12:25 PM
Name the ONE thing about your Z no other car has	winnre	Nissan 370Z General Discussions	102	12-04-2013 03:44 AM
Best thing to dry my car with?	babbagandu	Detailing / Washing / Waxing / Cosmetic Maintenance and Repair	75	11-12-2012 04:13 PM
Odd thing...	kannibul	Nissan 370Z General Discussions	16	04-19-2010 02:00 PM
What is this thing?	schrute	Wheels & Tires	13	12-14-2009 04:21 PM