Car Not Firing Up

[Road Pest 1]

Hi,

 

New heater matrix fitted, new gear stick in, original air piping fitted and air box. Go to start her yesterday and it just catches/fires up and then dies almost immediately. Checked to make sure the plugs were sparking and they were.

 

Today I go out and she only turns over. I cleaned all the connections on the ignition coil and cleaned the electrodes on the spark plugs and still no joy.

 

The tachymetric relay was replaced recently so I hope that the new one still works (the car has been driven since).

 

When I was testing the spark plugs I could see puffs of stuff come out the hole left by the absent spark plug so assume this means I have pressure in the fuel delivery.

 

Could really do with some pointers on where to look next.

 

Thanks,

 

Phil

[Dizzee stuff 33 1 Cars]

Check the air flow meter conection and all the pipes are secure.

[Road Pest 1]

Yep, only did this all the other day so it is all tight and secure. connector is in firmly too. The oil pressure light switch sensor wire did snap off in my hand when I was checking connections. Could that cause a problem or is it not going to affect the car firing up?

[Dizzee stuff 33 1 Cars]

Other than the oil light not working it wont cause any problem, from your discription of the fault its does sound like an air flow meter problem, can you hear the fuel pump prime when you switch the ignition on.

[Road Pest 1]

Can't hear anything in the car when I turn the ignition on. Is the pump below the back seat? Just checked the connection there and am getting 12v same as at the battery.

[Dizzee stuff 33 1 Cars]

yes its under the back seat under the the bigger of the two plastic covers, its a 2 pin plug. If you connect a meter across the two pins you should see 12v when you first put the ignition on for a short time only, then you will also get 12v when you turn the engine over.

[Road Pest 1]

There doesn't seem to be a noise when I'm turning the ignition, but am going to take the fuel line off the rail first, turn the engine over and see if it's pumping fuel or not.

 

I replaced the heater matrix the other day so could have knocked a wire loose inside so might check fuse box and connectors and ECU too.

[Road Pest 1]

Compression

spark

fuel

AFM sensor

(cant remember if these run a crank/tdc sensor)

ECU temp sensor

 

Copied off another thread so I can find it again easily!