problems starting

[simwal 0]

hi had lots of issues 

but got it to a stage 

 

car i think has fueling problems 

timing ok 

have fuel and spark 

new afm 

took all spark plugs out turned it over 

put 3 plugs back in  started and ran on 3 plugs 

did same put all 4 plugs in no luck wont start

if i take all injector wires off it will start and go till fuel gone 

anyone have any ideas 

[Tom Fenton 1,542]

Coolant temp sender to ECU bad maybe, resistance values on the site somewhere, test the resistance back at the ECU terminals.

[simwal 0]

hi thanks 

have checked temp sensor

but not back at ecu will check that 

 

[Tom Fenton 1,542]

When I've had one over fuel it has been the air flow meter. Also bell wiring from that back to ECU.

[simwal 0]

have checked cont 

from coolant temp sensor to ecu all good 

[simwal 0]

hi 

i aslo thoght it was afm 

got a new one no luck bell wiring ?

[johnyma22 3]

Checked fuel pressure?  Getting fuel on rail isn't good enough, you need to know it's under decent pressure.

What happens when you try to start?  Does it start/judder then die or does it just not combust at all?

[simwal 0]

yea pressure good 

no it dosent really try to start only tries to start when  i take injectors plugs off 

and runs for a couple seconds 

[dcc 855]

It's possibly under too much pressure.

 

My check list would be

 

Check dist cap for corrosion to points and rotor arm

King lead condition

Air filter

Ignition timing

Plugs

Leads

Ignition amp

AFM

ecu temp sensor

Fuel pump pressure

Correct ECU

Correct injectors

Compression

 

 

Rarely do I get through the full list as you tend to find the issue is towards the simple end of the list