Over-fuelling

[Dazzer 1969 0]

Hi

can anyone help?

Having a problem with a “J” Reg 1991 GtI 1.9

took engine out for respray after respray refitted engine and car is now massively overfueling, to the point it is dumping the fuel in the oil, if we disconnect the fuel pump, car runs fine until fuel is exhausted, we then reconnect pump, car will start but misses until we again disconnect pump, then runs fine until fuel is again exhausted.

 

Again please help

[Zetec7 4]

Have you got the fuel return pipe connected to the right place, ie the regulator?

Just try tapping it lightly.

[pug_ham 244 3 Cars]

Have you connected the SAD (Supplementary air device) & CTS (Coolant temp sensor) plugs in the right places?

 

They can easily be crossed over which will cause problems.

 

SAD plug is black & CTS is blue, both two pin plugs.

 

g

[Dazzer 1969 0]

13 hours ago, Zetec7 said:

Have you got the fuel return pipe connected to the right place, ie the regulator?

Just try tapping it lightly.

Yes sure have.

[Dazzer 1969 0]

49 minutes ago, pug_ham said:

Have you connected the SAD (Supplementary air device) & CTS (Coolant temp sensor) plugs in the right places?

 

They can easily be crossed over which will cause problems.

 

SAD plug is black & CTS is blue, both two pin plugs.

 

g

Yes both fitted correctly, I will list your checks 

sad opens and closes when tested off car

cts replaced

new coil dizzy cap rotor arm leads and injectors

new ecu

Tried different tachy relay off different car

theres probably more tried so many different things 

[Dazzer 1969 0]

Sorry our checks

 

[Richard309Sri XU5JA 205GTi 8]

Hi I had the same thing. Two problems that caused mine. 1. the AFM connector. The pins were broken incomplete.  I bought a 5 pin connector from France plus 5 new pins. did the whole lot just to be sure but it could be even one. The one on the end the green is important. 2. the fuel pressure regulator. that wasnt working at all. 

 

I did those things and it works really well now without the massive overfuelling.

 

It was exactly the same - there was so much fuel it mixed with the oil to make the sump full of diluted petrol oil mixture. had to dump that. oil/petrol solution. it was even coming out the exhaust manifold of mine.

 

hope this might help

[Dazzer 1969 0]

32 minutes ago, Richard309Sri XU5JA 205GTi said:

Hi I had the same thing. Two problems that caused mine. 1. the AFM connector. The pins were broken incomplete.  I bought a 5 pin connector from France plus 5 new pins. did the whole lot just to be sure but it could be even one. The one on the end the green is important. 2. the fuel pressure regulator. that wasnt working at all. 

 

I did those things and it works really well now without the massive overfuelling.

 

It was exactly the same - there was so much fuel it mixed with the oil to make the sump full of diluted petrol oil mixture. had to dump that. oil/petrol solution. it was even coming out the exhaust manifold of mine.

 

hope this might help

Many thanks will look into afm connector , regulator is okay I also had oil,petrol out of manifold

 

[Rock Lobster 28]

I had an issue like this and fuel was being pumped directly into the manifold via a defective fuel reg, took me bloody ages to find it!