Need some help please!

Hello JC members,

Although my car is a VY V6, Im posting in here because the VY section isnt very active. I have just finished a lot of work on my car.

Ive just done major work on my car and now when I start it it just doesnt sound or feel right, there a lot of shaking and vibrating and it feels really off. And I thought I could smell fuel.

What I have done is replace the waterpump, coolant hoses, heater tap, thermostat, intake manifold gaskets, serviced fuel injectors, new fuel pressure regulator, belt tensionor, idle wheels.

I cleaned everything, including the MAF and the little sensor in the throttle body. Degreased the entire engine. It feels likethe cars either A: not getting enough fuel or B: its not firing right....but I have no idea. Id love some help please.

 

Thanks for the reply.

MAF: I used MAF cleaner and sprayed them down, didnt see anything break or dislodge. I was very careful.

INJECTORS I am a bit sus about the injectors, as they went in very smoothly and when I look down into where they seat I can see the top of the o-ring. But Theres no way to push them down any further unless I disconnect the rail from the plenum.

TPS: No idea what youre refering too here Im sorry?

SPARKPLUG: Im pretty confident the leads are in the right order because both ends of the leads numbered. But I will double check this.

Would it be that the computer is adjusting its settings after everything was cleaned? The fuel pressure regulator was a very tight fit, but I tapped it in with a soft hammer. Putting the retainer clip in after.

 

Okay so Just googled TPS. Theres no block on mine, its just one unit with an electrical connector on the side which is plugged in. J took that TOS off and cleaned it, just wondering if that would break it.

 

No I cant see any fuel. Would it be noticable?

 

Okay I cant see any leaks from the regulator, injectors or the fuel pipes that go through the firewall. Itsweird but the slight smell of fuel is more noticable in the cabin then it is in the engine.

 

Theres a little hose that comes off of the FPR and goes into the upper intake manifold, theres actually 3 hoses that all are in the same area at the rear of the plenum. The hoses are different diameters and the one that comes from the FPR can only go onto one connector. If I cant get it settled tonight then Ill contact a local mechanic to have a look. Im sure its nothing serious but what do I know.....

 

Thanks Krusing. I live in country Victoria. Ill have a crack tonight and if its no dice then Ill contact a local mechanic who does mobile services, saves me having to drive it. Thanks you for the heads up, Ill keep that in mind.

 

Well what I mean is that the engine didnt explode, in which case anything less must be a good sign right? Lol. Thanks forthe feedback, my brains fried. Ill report back tomorrow.

 

So I got the car towed today to a local mechanic, havent heard back from them which is a bit worrying, but due to their reputation they are always very busy.

Im just wondering. I had a socket peice fall down through the manifold and into the chamber where the valve rod is. Now I pushed around in there with a screw driver trying to get this socket out. I wasnt pushing against that rod but was trying to lever the socket out as it was wedged in.

Also in an attempt to get the socket out I undid the roller rocker that was for that valve, thinking I could make the valve move....not knowing its held under tension with a spring.

I put the roller rocker back on and did it upto torque spec.

I wonder if any of these 2 issues is causing a problem? I havent had this issue with my car, apart from a new alternator its started first time everytime since 2007. As soon as I try to improve it it all goes to s***.

 

**UPDATE**

So I just rang the mechanic to see how things were going, they suspect its 2 injectors that are causing the issue. This makes sense to me because when I went to service the injectors by removing the baskets, the first 2 I used screw and pull method, so its possible bits of plastic fell down into the injectors clogging them. After the screw and pull method didnt work I resorted to prying the baskets out with a small tool.

So they are going to get me second hand injectors to see if that resolves the issue.

 

So the outcome, yes. A word of advice to anyone doing DIY and watching videos online...make sure you do plenty of research ask advice.

I serviced my fuel injectors by replacing the baskets and O-rings but I did not have them cleaned before attaching them to my fuel rail, which I should have, and as a result when I started my car 3 of 6 fuel injectors were malfunctioning causing them to stay open which flooded the fuel system with petrol. The petrol then made it's way into the catalytic converter causing a potential for a fire and explosion.

I should of just left well-enough along and just replaced the LIM gaskets, but seeing as the engine was apart I thought I might as well have serviced the fuel rail. Even though I was very careful it's best to leave critical elements like this to people who know what they are doing, and not just following a DIY guide online.

So all in all its about $500+ to have the injectors replaced, fuel filter changed and just labor for diagnosing the problem. I didn't undertake this job to save money I did it because I wanted to learn about my car, but some things are best left top professionals.