VR V8 caprice over fuelling

[Pudgie Kels]

Gents I have a VR v8 Caprice and when it starts it idles ok and then fuels up I have changed dizzy rotor button Leeds plugs pressure regulator maf sensor flow meter and its sensors and even a new computer, no faults come up on the Scan tool today I have ordered a new temp sensor has anyone had the same issues and how did you fix it .? any help would be much appreciated thanks Mitchell

 

[BlackVXGTS]

What do you mean by "fuels up"? What are the specific symptoms? Stalling? Black Smoke out of exhaust? Something else?

Given the number of things you have changed, I would be inclined to check out your injectors.

 

[trel]

You've thrown the parts cannon at it but not looked at the most obvious thing. Injectors.

 

[Pudgie Kels]

Gents I have a VR v8 Caprice and when it starts it idles ok and then fuels up I have changed dizzy rotor button Leeds plugs pressure regulator maf sensor flow meter and its sensors and even a new computer, no faults come up on the Scan tool today I have ordered a new temp sensor has anyone had the same issues and how did you fix it .? any help would be much appreciated thanks Mitchell

I Have also changed the Injectors and it starts up and idles okay for about 10 seconds then just starts blowing black smoke out of the exhaust and then runs rough

 

[Pudgie Kels]

You've thrown the parts cannon at it but not looked at the most obvious thing. Injectors.

yes I have changed the injectors sorry I forgot to mention that even stuck a camera in the inlet manifold to see if any thing was wrong and it has 40psi fuel pressure when running

 

[Pudgie Kels]

You've thrown the parts cannon at it but not looked at the most obvious thing. Injectors.

 

[Pudgie Kels]

Mate you are correct I checked the numbers on the injectors which we already had thought was an issue after checking fuel pressure vacuum and fuel regulator, keep in mind I only purchased this car a couple of months ago and it blew black smoke when I drove it onto the trailer but it had a blown exhaust gasket hence I thought to much air more fuel black smoke? well after we have done the timing and it runs a bit better I have found it has a big cam in it and 370cc Injectors, what the ??? it also has a Bobs hot up chip, The plot is starting to thicken !! my understanding is that a standard 304 runs 204cc Injectors and a HSV runs 220cc injectors and mine is running 370cc injectors, yes I have thrown money at it but most the Items were consumables and needed, the next question is what size injectors should it have and presently I have no details about the rebuild.
I must say I have learnt a lot in the last week, most my cars have Carby's
Thanks for your comments they were helpful
Mitchell

 

[BlackVXGTS]

Mate, why do you waste the time of forum members by not providing complete information in your first post? 370cc injectors and a big cam are vital information if you expect to get any sensible help. Standard Holden vt,vx,vy,v2 ls1 GTS (300kw): 0 280 155 890 injectors are 300cc.

 

[Pudgie Kels]

Mate, why do you waste the time of forum members by not providing complete information in your first post? 370cc injectors and a big cam are vital information if you expect to get any sensible help. Standard Holden vt,vx,vy,v2 ls1 GTS (300kw): 0 280 155 890 injectors are 300cc.

When I first started the car it ran like a dog and I did not notice the cam it wasn't until I replaced all the ignition system and timed it, then we noticed the big cam, It was then that I looked at the fuel system/pressure and chased up the part number of the injectors, which are advertised on Ebay to fit a 304/355 but also supercharged six I then chased up the size of a standard injector which I have been told is 204cc or 220cc for a HSV, please keep in mind this is the first time i have played with an injected V8 so today I have ordered a set of standard 204cc Injectors and it should run better.
Thanks for your comments
Mitchell

 

[wildfiremaint]

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