# Do you guys know what this thing? **URL:** \ **Category:** Maintenance/Repairs\ **Created:** [June 5, 2019, 11:04pm UTC](https://community.cartalk.com/t/do-you-guys-know-what-this-thing/141651 "2019-06-05T23:04:56Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![geimerislt0612x\_152917](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/geimerislt0612x_152917/32/16289_2.png) [@geimerislt0612x\_152917](https://community.cartalk.com/u/geimerislt0612x_152917)\ **Post date:** [June 5, 2019, 11:04pm UTC](https://community.cartalk.com/t/do-you-guys-know-what-this-thing/141651/1 "2019-06-05T23:04:56Z")
Picture: [https://imgur.com/a/tsxxz1u](https://imgur.com/a/tsxxz1u) My vehicle is Opel vectra B caravan 2.0 dti 16v (f35) (74 kw / 101 ag), year 2000. Do you guys know if this is like “fuel injection pressure valve” or something like that? On the side it says “Safety valve”. It had a leak at both hoses, i’ve fixed it temporarily, now it’s not leaking. I am also VERY curious if its installed the right way, when i was fixing a leak i took it out and the top part is turning so it can turn both ways so i forgot which side to put this thing back, i’ve had no problems putting it both ways, hose to the right i believe goes to fuel tank and left one to the engine. I am very thankful to everyone who tries to help me because i’m very frustrated and i can’t find any information online. ---
**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\ **Post date:** [June 5, 2019, 11:08pm UTC](https://community.cartalk.com/t/do-you-guys-know-what-this-thing/141651/2 "2019-06-05T23:08:19Z")
Looks like some sort of solenoid valve. Tester ---
**Author:** ![geimerislt0612x\_152917](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/geimerislt0612x_152917/32/16289_2.png) [@geimerislt0612x\_152917](https://community.cartalk.com/u/geimerislt0612x_152917)\ **Post date:** [June 5, 2019, 11:15pm UTC](https://community.cartalk.com/t/do-you-guys-know-what-this-thing/141651/3 "2019-06-05T23:15:45Z")
It really does, weird… ---
**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\ **Post date:** [June 5, 2019, 11:17pm UTC](https://community.cartalk.com/t/do-you-guys-know-what-this-thing/141651/4 "2019-06-05T23:17:21Z")
Where are you? Down-under? Tester ---
**Author:** ![geimerislt0612x\_152917](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/geimerislt0612x_152917/32/16289_2.png) [@geimerislt0612x\_152917](https://community.cartalk.com/u/geimerislt0612x_152917)\ **Post date:** [June 5, 2019, 11:19pm UTC](https://community.cartalk.com/t/do-you-guys-know-what-this-thing/141651/5 "2019-06-05T23:19:08Z")
At the top, when you open the hood its in the very end, sorry i didn’t take more pictures, if needed i can do them tomorrow when its light outside i guess. Without this thing the car won’t start after some time (a day?), it’s something with fuel pressure. ---
**Author:** ![Nevada\_545](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nevada_545/32/41232_2.png) [@Nevada\_545](https://community.cartalk.com/u/Nevada_545)\ **Post date:** [June 5, 2019, 11:20pm UTC](https://community.cartalk.com/t/do-you-guys-know-what-this-thing/141651/6 "2019-06-05T23:20:46Z")
Looks like a fuel cut solenoid for a diesel engine. ---
**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\ **Post date:** [June 5, 2019, 11:22pm UTC](https://community.cartalk.com/t/do-you-guys-know-what-this-thing/141651/7 "2019-06-05T23:22:18Z")
No! Where do you live? The last Opel sold in the US was 1975. According to Rockauto. Tester ---
**Author:** ![geimerislt0612x\_152917](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/geimerislt0612x_152917/32/16289_2.png) [@geimerislt0612x\_152917](https://community.cartalk.com/u/geimerislt0612x_152917)\ **Post date:** [June 5, 2019, 11:23pm UTC](https://community.cartalk.com/t/do-you-guys-know-what-this-thing/141651/8 "2019-06-05T23:23:56Z")
haha sorry. I live in Lithuania, it’s pretty old car that i’ve got as a gift, it’s pretty nice car, i see them pretty often here. ---
**Author:** ![geimerislt0612x\_152917](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/geimerislt0612x_152917/32/16289_2.png) [@geimerislt0612x\_152917](https://community.cartalk.com/u/geimerislt0612x_152917)\ **Post date:** [June 5, 2019, 11:31pm UTC](https://community.cartalk.com/t/do-you-guys-know-what-this-thing/141651/9 "2019-06-05T23:31:38Z")
It’s something weird, because on the side it says gasoline even though the car is diesel, maybe at some point mechanic was fixing this car and put a different part, he puts used parts in my car, or maybe this part was from the very beginning, i have no idea, but i can’t find it anywhere, selenoid valve does look very similar but not quite. ---
**Author:** ![tcmichnorth](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tcmichnorth/32/25126_2.png) [@tcmichnorth](https://community.cartalk.com/u/tcmichnorth)\ **Post date:** [June 5, 2019, 11:36pm UTC](https://community.cartalk.com/t/do-you-guys-know-what-this-thing/141651/10 "2019-06-05T23:36:05Z")
Looks like an on / off solenoid. Says 0-45psi. Putting a voltmeter on it and seeing what activates it could give you a clue. Power with key on, or engine running only. ---
**Author:** ![geimerislt0612x\_152917](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/geimerislt0612x_152917/32/16289_2.png) [@geimerislt0612x\_152917](https://community.cartalk.com/u/geimerislt0612x_152917)\ **Post date:** [June 5, 2019, 11:38pm UTC](https://community.cartalk.com/t/do-you-guys-know-what-this-thing/141651/11 "2019-06-05T23:38:35Z")
On the other side it says 0.3 bar if I remember correclty and at the bottom letter B. Sadly I don’t have voltmeter just yet, i’m pretty new at cars, this is my first car that I got like 4 months ago. ---
**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\ **Post date:** [June 5, 2019, 11:41pm UTC](https://community.cartalk.com/t/do-you-guys-know-what-this-thing/141651/12 "2019-06-05T23:41:02Z")
If it mattered which way the valve is installed, there would be an arrow on the valve indicating flow direction. Tester ---
**Author:** ![geimerislt0612x\_152917](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/geimerislt0612x_152917/32/16289_2.png) [@geimerislt0612x\_152917](https://community.cartalk.com/u/geimerislt0612x_152917)\ **Post date:** [June 5, 2019, 11:42pm UTC](https://community.cartalk.com/t/do-you-guys-know-what-this-thing/141651/13 "2019-06-05T23:42:20Z")
It has an arrow, it’s probably hard to see it! [http://prntscr.com/ny5ph0](http://prntscr.com/ny5ph0) ---
**Author:** ![geimerislt0612x\_152917](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/geimerislt0612x_152917/32/16289_2.png) [@geimerislt0612x\_152917](https://community.cartalk.com/u/geimerislt0612x_152917)\ **Post date:** [June 5, 2019, 11:48pm UTC](https://community.cartalk.com/t/do-you-guys-know-what-this-thing/141651/14 "2019-06-05T23:48:26Z")
I think everyone is right that it’s a selenoid valve, but the thing I’m most worried is if it’s installed properly, arrow points towards the fuel tank, maybe it should point towards the engine? ---
**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\ **Post date:** [June 5, 2019, 11:49pm UTC](https://community.cartalk.com/t/do-you-guys-know-what-this-thing/141651/15 "2019-06-05T23:49:37Z")
The fuel flows from the fuel tank to the engine. So yes. Tester ---
**Author:** ![geimerislt0612x\_152917](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/geimerislt0612x_152917/32/16289_2.png) [@geimerislt0612x\_152917](https://community.cartalk.com/u/geimerislt0612x_152917)\ **Post date:** [June 6, 2019, 12:02am UTC](https://community.cartalk.com/t/do-you-guys-know-what-this-thing/141651/16 "2019-06-06T00:02:21Z")
Thank you and everyone else for helping me, I really appreciate it!! 🙂 I will have to switch it tomorrow then, haha! ---
**Author:** ![geimerislt0612x\_152917](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/geimerislt0612x_152917/32/16289_2.png) [@geimerislt0612x\_152917](https://community.cartalk.com/u/geimerislt0612x_152917)\ **Post date:** [June 6, 2019, 12:21am UTC](https://community.cartalk.com/t/do-you-guys-know-what-this-thing/141651/17 "2019-06-06T00:21:43Z")
Just curious, but why the car doesn’t start without selenoid valve? Also, would there be a purpose for selenoid valve that points towards fuel tank, does that make sense? ---
**Author:** ![It\_s-Me](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/it_s-me/32/12660_2.png) [@It\_s-Me](https://community.cartalk.com/u/It_s-Me)\ **Post date:** [June 6, 2019, 11:06am UTC](https://community.cartalk.com/t/do-you-guys-know-what-this-thing/141651/18 "2019-06-06T11:06:14Z")
> [@geimerislt0612x\_152917](#): > > Also, would there be a purpose for selenoid valve that points towards fuel tank, does that make sense? The arrow points the direction the fuel is supposed to flow. ---
**Author:** ![geimerislt0612x\_152917](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/geimerislt0612x_152917/32/16289_2.png) [@geimerislt0612x\_152917](https://community.cartalk.com/u/geimerislt0612x_152917)\ **Post date:** [June 6, 2019, 12:36pm UTC](https://community.cartalk.com/t/do-you-guys-know-what-this-thing/141651/19 "2019-06-06T12:36:57Z")
Here is a better picture of the engine bay: [https://imgur.com/a/UYFWAUG](https://imgur.com/a/UYFWAUG) The fuel from the fuel filter goes towards the engine and fuel that goes through solenoid also goes towards the engine, even though its straight from the fuel tank I guess? How does this work i’m very curious. ---
**Author:** ![geimerislt0612x\_152917](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/geimerislt0612x_152917/32/16289_2.png) [@geimerislt0612x\_152917](https://community.cartalk.com/u/geimerislt0612x_152917)\ **Post date:** [November 19, 2019, 10:52pm UTC](https://community.cartalk.com/t/do-you-guys-know-what-this-thing/141651/20 "2019-11-19T22:52:35Z")
Whoops, definitely didn’t want to bump this post